Use "union mount" with SSD
I have replaced the optical drive in my MacBook with an 80G SSD. I want to boot from the SSD, and keep my smaller documents and my Library on the SSD. I want to store large files on the original (spinning) hard disk.
Here's what I've done so far:
installed Lion on the new (blank) SSD.
created a new user with the same ID as I was using on the old boot disk
replaced the (empty) Desktop, Documents, and Library directories of the new user with those directories from the old user on the old hard drive
moved the Applications, Downloads, Movies, Music, Pictures, Public, and Virtual Machines directories from the old user to the root of the old hard drive
cleaned up the old hard drive so that only those user data directories exist at the root level
used "vifs" to edit my fstab to include this (my SSD is /dev/disk1s2, the old hard disk is /dev/disk1s2):
/dev/disk1s2 /Users/whywonthiswork hfs rw,union 0 2
unmounted the old hard disk, so it's no longer at /Volumes/
did "sudo mount -a" to re-mount the old hard disk
The result is almost exactly what I wanted. My home directory appears entirely "normal" and works just like it did before I added the SSD to the mix. It's better than the common "use symlinks" approach because my Finder sidebar items still have their special icons. Plus I suspect the symlinks will cause problems, somewhere, since a symlink is not the same thing as the real directory. Behind the scenes, though, my Library and my commonly used documents are stored on the fast SSD, while the big media files and virtual machines are stored on the roomy hard disk.
The only problem left is how to automate the mount process. Currently, when I reboot, my hard disk gets mounted at /Volumes/Storage. I have to log in, sudo unmount it, then sudo mount -a to remount it where it belongs. By the way, I initially tried to use UUID in the fstab, but that didn't work at all.
Can anybody tell me what I have to do to make Mac OS stop trying to automount my hard disk to /Volumes, and mount it to /Users/whywonthiswork, instead?
I presume it's a typo; but you refer to both your SSD & your old disk as /dev/disk1s2 which makes all the examples in this thread totally confusing & virtually useless.
I have found other references to union mounts in OS X which did not seem to suffer the lack of support in the GUI as reported by Patrick Proniewski. In fact, your original post indicates that the files from your old HD are indeed visible in the finder (you mention your icons in the sidebar being normal). Unless I completely misunderstood you, the issue you were seeking to resolve was not actually any aspect of union mounts, but how to prevent a volume from auto-mounting via an edit to the fstab file...
To prevent a volume/partition from auto-mounting by adding an entry to fstab, definitely use the UUID to identify the partition which you do not want to auto-mount. Use the following as a template:
UUID=HHHHHHHH-HHHH-HHHH-HHHH-HHHHHHHHHHHH none hfs rw,noauto,nobrowse 0 0
'H' represents a hexadecimal digit. You said you tried using UUID without success. Although you didn't state whether you were using it in the union mount line or the no-auto mount line, or both...
For those who don't know: one way to learn the UUID of a volume/partition is using the Disk Utility, select the partition from the list on the left and press ⌘I (Get Info). You can select & copy the UUID and paste it into fstab (I use TextWrangler- downloaded from their website not Appstore- because it provides a familiar interface & deals with all the permissions issues). This method definitely works in Lion (and MountainLion).
I'm still trying to get a volume union mounted successfully via fstab. I can not use /dev/diskXsX to identify it because that (inexplicably) changes too often on my system.
To answer Patrick's question about writability: ONLY the last source added to a union mount directory can be read-write. Any & all other sources will be read-only. However, they appear to be writable. And if you modify a file known to exist only on an underlying read-only partition, it will be silently duplicated to the partition with write capability & modifications to the file will be saved there. The original version will no longer be visible but has been left untouched. Any duplicate files from the underlying sources will be replaced by the one on the top source.
Hope this helps someone.
Similar Messages
-
How to use union statement with declare & set function?
Hi Experts,
i have small query about how to use union statement with declare & set function?
Example as below :
DECLARE @name AS date
Declare @name2 AS date
/* SELECT FROM [2013].[dbo].[OINV] T0 */
/* WHERE */
SET @name = /* T0.DocDate */ '[%1]'
SET @name2 = /* T0.DocDate */ '[%2]'
select '2013',t5.U_salmannm,t1.CardName,t2.sumapplied as CollectionAmount,t2.DcntSum ,t3.DocTotal as InvoiceTotal,
datediff(dd,t3.DocDate,t1.Docdate) as Days
from 2013.dbo.orct t1
inner join 2013.dbo.RCT2 t2 on t1.DocNum = t2.DocNum
left join 2013.dbo.oinv t3 on
t3.docentry = t2.baseAbs
inner join 2013.dbo.ocrd t4 on t1.Cardcode = t4.CardCode
inner join [2013].[dbo].[@CQ_RTSM] t5 on t4.U_BeatCode = t5.U_RoutCode
where t2.DcntSum <> 0.000000 and t3.DocDate between [%1] and [%2]
Union
/* SELECT FROM [2014].[dbo].[OINV] T0 */
/* WHERE */
SET @name = /* T0.DocDate */ '[%1]'
SET @name2 = /* T0.DocDate */ '[%2]'
select '2014',t5.U_salmannm,t1.CardName,t2.sumapplied as CollectionAmount,t2.DcntSum ,t3.DocTotal as InvoiceTotal,
datediff(dd,t3.DocDate,t1.Docdate) as Days
from 2014.dbo.orct t1
inner join 2014.dbo.RCT2 t2 on t1.DocNum = t2.DocNum
left join 2014.dbo.oinv t3 on
t3.docentry = t2.baseAbs
inner join 2014.dbo.ocrd t4 on t1.Cardcode = t4.CardCode
inner join [2014].[dbo].[@CQ_RTSM] t5 on t4.U_BeatCode = t5.U_RoutCode
where t2.DcntSum <> 0.000000 and t3.DocDate between [%1] and [%2]You have to create stored procedure in SQL only .
Like u must have create for Crystal .
You can execute procedure in query manager but you have to enter parameter manually..
example
Exec @Test '20140101' '20140501'
Every time user has to enter it manually in yyyymmdd format in case of date parameters.
Example
Create Proc [@Test]
as begin
DECLARE @name AS date
Declare @name2 AS date
/* SELECT FROM [2013].[dbo].[OINV] T0 */
/* WHERE */
select '2013',t5.U_salmannm,t1.CardName,t2.sumapplied as CollectionAmount,t2.DcntSum ,t3.DocTotal as InvoiceTotal,
datediff(dd,t3.DocDate,t1.Docdate) as Days
from 2013.dbo.orct t1
inner join 2013.dbo.RCT2 t2 on t1.DocNum = t2.DocNum
left join 2013.dbo.oinv t3 on
t3.docentry = t2.baseAbs
inner join 2013.dbo.ocrd t4 on t1.Cardcode = t4.CardCode
inner join [2013].[dbo].[@CQ_RTSM] t5 on t4.U_BeatCode = t5.U_RoutCode
where t2.DcntSum <> 0.000000 and t3.DocDate between @Name and @Name2
Union
/* SELECT FROM [2014].[dbo].[OINV] T0 */
/* WHERE */
select '2014',t5.U_salmannm,t1.CardName,t2.sumapplied as CollectionAmount,t2.DcntSum ,t3.DocTotal as InvoiceTotal,
datediff(dd,t3.DocDate,t1.Docdate) as Days
from 2014.dbo.orct t1
inner join 2014.dbo.RCT2 t2 on t1.DocNum = t2.DocNum
left join 2014.dbo.oinv t3 on
t3.docentry = t2.baseAbs
inner join 2014.dbo.ocrd t4 on t1.Cardcode = t4.CardCode
inner join [2014].[dbo].[@CQ_RTSM] t5 on t4.U_BeatCode = t5.U_RoutCode
where t2.DcntSum <> 0.000000 and t3.DocDate between
between @Name and @Name2
end -
SQL - JOIN using UNION ?? UNION using JOIN ?? with example!
I was asked this question during one of my interviews. Can you do JOIN using UNION keyword? Can you do UNION using JOIN keyword?
That is -
1. I should get same output as JOIN without using JOIN keyword, but using UNION Keyword?
2. I should get same output as UNION without using UNION keyword, but using JOIN Keyword?
Can you give me an example of how to do this if possible?Hi,
Welcome to the forum!
user13067794 wrote:
I was asked this question during one of my interviews. Can you do JOIN using UNION keyword? Can you do UNION using JOIN keyword?The correct answer to those questions is: Why would you want to? All versions of Oracle (and probably any other database product) provide JOIN to do certain things and UNION to do other things. Why not use those features the way they were designed to be used? Even if it is possible to do what you ask, it's going to be more complicated and less efficient.
If you really must:
That is -
1. I should get same output as JOIN without using JOIN keyword, but using UNION Keyword? You can select the relevant columns from each table, and NULLs for all the columns from other tables, in a UNION query. Then you can use GROUP BY or analytic functions to combine data from different rows. For example, this JOIN:
SELECT d.dname
, e.mgr
FROM scott.dept d
JOIN scott.emp e ON d.deptno = e.deptno
;could be written using UNION, but no JOIN, like this:
WITH union_data AS
SELECT deptno
, dname
, NULL AS empno
, NULL AS mgr
FROM scott.dept
UNION ALL
SELECT deptno
, NULL AS dname
, empno
, mgr
FROM scott.emp
, quasi_join AS
SELECT MAX (dname) OVER (PARTITION BY deptno) AS dname
, mgr
, empno
FROM union_data
SELECT dname
, mgr
FROM quasi_join
WHERE empno IS NOT NULL
;Depending on your tables and your requirements, you might be able to do something a little simpler.
2. I should get same output as UNION without using UNION keyword, but using JOIN Keyword?A FULL OUTER JOIN is similar to UNION.
This UNION query:
SELECT dname AS txt
FROM scott.dept
UNION
SELECT TO_CHAR (mgr) AS txt
FROM scott.emp
;Can be written like this, using JOIN but no UNION:
SELECT DISTINCT
NVL2 ( e.empno
, TO_CHAR (e.mgr)
, d.dname
) AS txt
FROM scott.dept d
FULL OUTER JOIN scott.emp e ON 1 = 2
user13067794 wrote:I too don't any example as such, but I am thinking on this line -
Select a.x, b.y
from a,b
where a.key=b.key and sal<5000
UNION
Select a.x, b.y
From a,b
Where a.key=b.key and sal>7000
can we get same result using JOIN?That's a very special case. You can get the same results without using UNION like this:
Select distinct
a.x
, b.y
from a
, b
where a.key = b.key
and ( sal < 5000
OR sal > 7000
Can we do something similar using UNION without using JOIN keyword??What you posted does not use the JOIN keyword.
To get the same results without using a join (either with or without the JOIN keyword), you can use UNION together with aggregate or analytic functions, as I showed earlier.
Edited by: Frank Kulash on Jul 5, 2011 9:01 PM -
Should i use "HDD protection utility" in connection with SSD drive?
I've replaced HDD with SSD and reinstalled my Windows. Accidentally I've installed "HDD protection utility"? Is it absolutely useless in system with SSD? Should I uninstall this utility?
Thank you.Since one month I use SSD with my Satellite Notebook. I have installed original recovery image that includes HDD protection utility. I can start it but it is inactive.
Strange thing is that with HDD it was inactive too. To be honest I dont care about that. It is preinstalled but I have disabled it from automatic start-up.
In my opinion you can remove it from the system. -
How can I take my iPhone & iPad backups from my iMac at home with me while travelling using my Macbookair (128Gb SSD) with an ext. HD? I want to continue to back up my devices including those of my wife while travelling without using the cloud and not returing home for several weeks.
Any ideas or solutions?
Thanks for your help.You can use any Mac with a recent copy of iTunes to back up an iPhone or iPad. It doesn't have to be the one you usually synch with, so long as you don't let it try to do a synch.
Just take fresh backups on the MBA. As for how to get the backups onto the external drive, I'll have to leave that to others; I've never tried. -
Using Magnetic iSight Mount ( with FW iSight ) on iMac 2007
Guess this is not a smart question...
I am able to "mount" the original Firewire iSight using the Magnetic Mount on top of the iMac 2007 ( with built-in iSight ).
So under this scenario, does the "magnetic field" from the Mount may have any side-effects over the built-in iSight circuits or other interior components?
(especially when I mount the external iSight right in the middle of the iMac that is ... on top of the built-in iSight ) Thx!Do you feel any magnetic pull when you move the mount over the center but not touching? If not, you can't use that mount there, it will simply slide off.
-
Using order by with the UNION ALL operator
Hi,
I have 2 queries and i'm using UNION ALL to join both of them.
And i want to sort the final result based on a column.
When i try to do that, its not allowing me to use the ORDER BY clause.
Any suggestions??
Example
select * from xxx where job='Manager'
order by ename
union all
select * from yyy where job='Engineer'
order by ename
Thanks in advance
--KumarSQL> select * from test_emp where deptno = 10 order by ename
2 union all
3 select * from test_emp where deptno = 20 order by ename;
union all
ERROR at line 2:
ORA-00933: SQL command not properly ended
SQL> select * from test_emp where deptno = 10 --order by ename
2 union all
3 select * from test_emp where deptno = 20 order by ename;
select * from test_emp where deptno = 20 order by ename
ERROR at line 3:
ORA-00904: "ENAME": invalid identifier
SQL> select * from test_emp where deptno = 10 --order by ename
2 union all
3 select * from test_emp where deptno = 20 --order by ename;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
7698 BLAKE MANAGER 7839 01-MAY-81 3141 1 10
7782 CLARK MANAGER 7839 09-JUN-81 2700 10
7839 KING PRESIDENT 17-NOV-81 5512 10
7934 MILLER CLERK 7782 23-JAN-82 1433 10
7369 SMITH CLERK 7902 10-OCT-06 882 123 20
7566 JONES MANAGER 7839 10-OCT-06 3279 123 20
7788 SCOTT ANALYST 7566 11-OCT-06 3307 123 20
7876 ADAMS CLERK 7788 10-OCT-06 1212 123 20
7902 FORD ANALYST 7566 10-OCT-06 3307 123 20
9 rows selected.
SQL> select * from
2 (select * from test_emp where deptno = 10 union all
3 select * from test_emp where deptno = 20)
4 order by ename;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
7876 ADAMS CLERK 7788 10-OCT-06 1212 123 20
7698 BLAKE MANAGER 7839 01-MAY-81 3141 1 10
7782 CLARK MANAGER 7839 09-JUN-81 2700 10
7902 FORD ANALYST 7566 10-OCT-06 3307 123 20
7566 JONES MANAGER 7839 10-OCT-06 3279 123 20
7839 KING PRESIDENT 17-NOV-81 5512 10
7934 MILLER CLERK 7782 23-JAN-82 1433 10
7788 SCOTT ANALYST 7566 11-OCT-06 3307 123 20
7369 SMITH CLERK 7902 10-OCT-06 882 123 20
9 rows selected.
SQL> -
[MBP - 2008, 4,1] Best way to replace HDD with SSD
Looking to upgrade my 2008 Macbook pro with a new SDD.
What is the best way to install a SDD while still saving the data from my HDD? I've heard it's possible to clone the hard drive, place the info on the SDD, and then boot with it. I've tried my best googling it, but I can't seem to figure out how I would connect my SSD to my computer while the HDD is still installed? I don't have an external drive with SATA connections.
If I do have to do a clean boot with the SDD (After saving important documents on an external drive), would I need my OSX disks? It's been a long 4 years with this computer and don't think there is any chance of recovering the OSX boot disks. Is there a way to download these necessary to do a clean boot?
Thanks for helping a misguided student trying to speed up his laptop!You have two basic options. First is simply replace the HDD with the SSD. Second is to remove the optical drive, move the HDD to the space where the optical drive was (you need a mounting kit for this) and install the SSD where the HDD was installed.
Visit OWC to see the various options they have that includes the special mounting kit, SSD, and installation tutorials.
If you go with the first option then you will need an external notebook drive enclosure in which to put the HDD when you replace it with the SSD.
As for cloning that is done as follows:
Clone using Restore Option of Disk Utility
Open Disk Utility from the Utilities folder.
Select the destination volume from the left side list.
Click on the Restore tab in the DU main window.
Check the box labeled Erase destination.
Select the destination volume from the left side list and drag it to the Destination entry field.
Select the source volume from the left side list and drag it to the Source entry field.
Double-check you got it right, then click on the Restore button.
Destination means the external backup drive. Source means the internal startup drive.
Be sure you prep the SSD properly:
Drive Preparation
1. Boot from your old HDD. Open Disk Utility in your Utilities folder.
2. After DU loads select your SSD (this is the entry with the mfgr.'s ID and size) from the left side list. Note the SMART status of the drive in DU's status area. If it does not say "Verified" then the drive is failing or has failed and will need replacing. SMART info will not be reported on external drives. Otherwise, click on the Partition tab in the DU main window.
3. Under the Volume Scheme heading set the number of partitions from the drop down menu to one. Set the format type to Mac OS Extended (Journaled.) Click on the Options button, set the partition scheme to GUID then click on the OK button. Click on the Partition button and wait until the process has completed.
4. Select the volume you just created (this is the sub-entry under the drive entry) from the left side list. Click on the Erase tab in the DU main window.
5. Set the format type to Mac OS Extended (Journaled.) Click on the Security button, check the button for Zero Data and click on OK to return to the Erase window.
6. Click on the Erase button. The format process can take up to several hours depending upon the drive size.
I would also recommend upgrading your OS to Snow Leopard. You will need at least 1 GB of installed RAM for Snow Leopard. -
CHKDSK fails on fresh install of Windows 7 x64 on mid-2009 MBP with SSD
There was an earlier post about this that has been archived prematurely that I will reproduce below. The main issue is a flaw in the Windows 7 x64 CHKDSK of the SSD drive in the mid-2009 MBP= 5,2. With fresh OSX installs, bootcamp 3.1, Windows 7 x64 all updates, the CHKDSK operation checks files at about 1 per second in stage 4 of 5, verifying file data.
Moderators: please leave this open until it is actually resolved.
Earlier posts:
Panajev
Posts: 4
From: ITALY
Registered: Oct 14, 2009
Windows 7 x64, MacBook Pro, frequent CHKDSK after HDD firmware update
Posted: Nov 2, 2009 6:45 AM
Hello, I have been having filesystem problems on my Windows 7 partition since the HDD related firmware update (the latest Performance update) was released and installed onto this mid 2009 MacBook Pro.
The HDD is a 500 GB 7200 RPM model, but it never gave me any troubles under OS X before the "fix" and I know other users had intermittent problems with the HDD on their MacBook Pro's related to the HDD making noises and pausing.
The fix was released, I installed it and I started seeing my first problem in Windows 7 x64 a few days after... I cleanly shut the OS down, but when I booted it back it asked me to perform a coherency check to the Filesystem... I thought that the problem was related to the fact that I was using the RC1 build of Windows 7... although that problem never manifested itself in the weeks before the Performance Update (HDD firmware fix) was installed and Windows 7 x64 RC1 had been on there and used frequently.
I recently purchased Windows 7 retail a few days ago and after a bit of trouble-free operation I started having problems again... always shutting the PC down carefully and I was asked to run the CHKDSK utility at boot twice already.
What to do?
Message was edited by: Panajev
MacBook Pro (2009) Mac OS X (10.6.1) Windows 7 x64, Bootcamp 3.0, recent HDD update
nicegom
Posts: 6
Registered: Nov 12, 2009
Re: Windows 7 x64, MacBook Pro, frequent CHKDSK after HDD firmware update
Posted: Nov 12, 2009 1:40 AM in response to: Panajev
Hi there,
I have a different experience. I installed Windows 7 before the "performance update 1.0" came out. I actually experienced the chkdsk launch problem with Windows 7. I had done repartitioning and clean-install several times but cannot solve the problem. So I tried to install XP and Vista on my MBA (Mid 2009 with SSD) and found that these two OS doesn't introduce such problem.
To be honest, I'm not sure which caused such problem, Windows 7, a bootcamp driver, or EFI. But I'm sure that CHKDSK in Windows 7 has an obvious bug that needs to be patched (memory leak and maybe this problem as well). So now I'm using Windows Vista SP2. And I'm happy with Vista SP2 (seems to become faster and stable now).
Cheer,
Message was edited by: nicegom
Macbook Air Windows Vista MBA of Mid 2009 with SSDWindows 7 x64 all updates
Just doublechecking. Does that include the recent chkdsk hotfixes?
[The Chkdsk.exe program does not start correctly on a Windows 7-based computer|http://support.microsoft.com/kb/975778] -
Using TIME MACHINE with a TIME CAPSULE
There's often a bit of confusion about this terminology: +*Time Machine+* vs. +*Time Capsule:+*
_*Time Machine*_ is Apple software that performs backups, to an external HD, a Time Capsule, etc.; and also allows you to browse and restore from them. It comes with Leopard and Snow Leopard, but cannot run on any previous versions of OSX.
A _*Time Capsule*_ is a piece of Apple hardware that combines a wireless router and hard drive, that can be used for Time Machine backups and/or other data.
Most Time Machine questions & problems are not unique to Time Capsules. For those, or if you don't find what you need here, try one of these:
Time Machine - Frequently Asked Questions
Time Machine - Troubleshooting
They can also be found in the *User Contributed Tips* section of both +Time Machine+ forums:
Mac OS X v10.5 Leopard > Time Machine
Mac OS X v10.6 Snow Leopard > Time Machine
Contents
|
QUESTIONS
*Q1. How do I set up Time Machine to back up to my Time Capsule?*
*Q2. How do I set up Time Machine to back up to a USB drive connected to my Time Capsule?*
*Q3. Can I use my Time Capsule for Time Machine backups AND other data?*
*Q4. My Time Capsule is too small to back-up my Mac(s). Now what?*
*Q5. Should I delete backups? If so, how?*
*Q6. How do I back-up my Time Capsule and/or USB drive(s) connected to it?*
If you don't see your question here, try the Frequently Asked Questions *User Tip,* also at the top of the +Time Machine+ forum.
|
PROBLEMS
*P1. The Backup disk image could not be created.*
*P2. Time Machine could not complete the backup . . sparsebundle could not be accessed. (Error 109).*
If you don't see your problem here, try the Time Machine - Troubleshooting *User Tip,* also at the top of the +Time Machine+ forum.
QUESTIONS
|
_*Q1. How do I set up Time Machine to back up to my Time Capsule?*_
|
First, set up your Time Capsule via +Airport Utility.+ Keep the name you assign to it, your Computer, and your network short (under 25 characters), and avoid embedded spaces, special characters, and punctuation (see item #P1 below for details). Make sure your Mac can connect via an Ethernet cable, if at all possible, as well as wirelessly.
The setup and first backup (of your entire system) will be much faster if you connect via Ethernet.
|
a. If the +Time Machine+ icon isn't already in your Dock, drag it there from your Applications folder. See below for more about it's use.
b. Right-click it and select +Open Time Machine Preferences,+ click the +Show Time Machine status in the menu bar+ box (see below), then click +Select Disk+ (on Leopard, this button will be either +Choose Backup Disk+ or +Change Disk).+
c. A list of possible destinations will appear. It should include your Time Capsule (with the name you gave it via Airport Utility), and may show other internal or external drives as well. Select your Time Capsule and click the +Use for Backup+ button.
d. A prompt for your name and password will appear. In some cases there won't be a Name field, but if there is, enter your short user name. Also enter the password you set up for the Time Capsule via Airport Utility, then click the Connect button.
e. A 120-second countdown to the start of your first backup will appear in the +Next Backup+ area of the TM Preference panel.
|
Note that this first backup will copy the entire contents of your system, except for a few things that are skipped automatically, such as system work files, most caches, your logs, trash, etc., and anything else you may have excluded (see #10 and #11 in the Frequently Asked Questions *User Tip,* also at the top of the +Time Machine+ forum). So it will be rather lengthy, depending on how much data is on your system, whether you're connected via Ethernet or WIFI, and if WIFI, how good the signal is.
You can continue to use your Mac while TM is backing-up, and you can even cancel a backup if necessary, but to make this first full backup as fast as possible, try not to overload your Mac or cancel the backup.
|
_*The Time Machine Icons in your Menubar and/or Dock*_
|
In the steps above, you dragged the TM Application's icon into your Dock, and clicked the +Show Time Machine status in the menu bar+ box.
For detailed info about them, see question #24 in the Frequently Asked Questions *User Tip,* also at the top of the +Time Machine+ forum.
+Go to Top+
_*Q2. How do I set up Time Machine to back up to a USB drive connected to my Time Capsule?*_
|
Mostly the way you set it up to use the Time Capsule's internal HD.
But first, attach the drive directly to your Mac, and erase and format it per the instructions in #5 of the Frequently Asked Questions *User Tip,* also at the top of the +Time Machine+ forum. Note, however, that it doesn't matter whether you use the +Mac OS Extended (Journaled)+ or +Mac OS Extended (Case-sensitive, journaled)+ Format, since Time Machine will put your backups in a sparse bundle that's case-sensitive. You cannot change that.
Unlike the Time Capsule's disk, you can partition the USB drive. That's highly recommended if you're going to be putting other data there, so the backups don't completely fill the disk (but be aware that Time Machine cannot back that "other" data up. See question #Q6 below).
If you're backing-up multiple Macs to the same drive, you can make one partition for each, but it's not as helpful on a network drive, because each Mac's backups will be in a separate sparse bundle. So you can let them share the disk or a partition.
Also note that if you've been doing backups to an external disk connected directly to your Mac, you cannot continue the same set of backups when you connect it to your Time Capsule. They are stored differently, and Time Machine will put them in a sparse bundle, alongside but *completely separate from* the backups made locally, and the first backup will be a full backup of your entire system.
Once the USB disk is set up the way you want it, use the setup procedure in question #Q1 above, but in step (c), select the USB drive/partition, not the Time Capsule's internal HD.
*RAID Sets connected to a Time Capsule:*
|
Time Machine will back up to a +Hardware Mirrored RAID set,+ also called +RAID 1,+ (sold that way, with multiple drives in the same enclosure). However, if you partition the +Hardware Mirrored RAID set,+ once you start using it with TIme Machine, you cannot change the sizes later and continue to back up to the same set of backups.
While you can connect multiple USB drives to a Time Capsule via a USB hub (a powered one is best), Time Machine +*will not+* back up to a +software Mirrored RAID+ set (where you combine the drives into a single volume via Disk Utility).
+Go to Top+
_*Q3. Can I use my Time Capsule for Time Machine backups and other data?*_
|
You can put other data on your Time Capsule's internal HD, but there are three major considerations:
Especially for things like photos and videos, access may be too slow for convenient viewing, and worse for editing. So test this a bit before you decide what to put there.
Time Machine cannot back-up that other data, so you'll need some other method. See question #Q6 below.
Time Machine will, by design, fill up all the space available to it, so there may be a conflict between the sparse bundle it puts your backups in, and the other data. There is a workaround, to "reserve" some space there, by creating a disk image of the desired size and storing your data there, but it's a bit cumbersome, and two Macs can't share it at the same time.
An alternative is to connect a USB drive to your Time Capsule. Then you can back up to the TC's disk and use the USB drive for other data, or vice-versa. But note that Time Machine cannot back-up the USB drive while it's connected to the TC (see question #Q6 below).
If you want to reserve space on the TC's internal disk, here's how:
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a. Start the +Disk Utility+ app (in your Applications/Utilities folder). Click the +New Image+ icon in the toolbar (or select +File > New > Blank Disk Image+ from the menubar). If the little arrow to the right of the "Save As" box points down, click it so it points up.
b. Give it a name in the "Save as" box. This name will appear on the TC's disk, with ".dmg" appended. (Similar to the way the sparse bundle containing your Time Machine backups appears, with ".sparsebundle" appended).
c. Click your TC in the sidebar. It may take a few moments for Disk Utility to recognize it, and show it in the center pane.
d. In that center pane, select the blue Share folder for your +Time Capsule+ (you may need to scroll down, or enlarge the window, to see it). Once selected, you'll see any existing disk images in the right pane.
e. Give the Image a name. This name will appear on your desktop and/or Finder sidebar when you mount the .dmg by double-clicking it, if you have the +External Disks+ box checked in +Finder > Preferences > General+ or +Finder > Preferences > Sidebar.+
f. Select the Size for the amount of space you want to reserve, either one of the pre-sets or Custom which allows any size. Avoid taking all the remaining space for the disk image, as Time Machine needs a bit of room to operate. Also note that if very little space is left, it will begin deleting old backups very soon, to make room for new ones.
g. Select the desired Format, probably the default of +Mac OS Extended (Journaled).+
h. If you want it encrypted, select the desired type.
i. Select single partition, either GUID or +Apple Partition Map.+
j. Select +Read/Write disk image+ for Image Format.
k. Click the Create button. The larger the image size, the longer this will take.
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When complete, the new disk image will be automatically mounted on your Mac's desktop, ready to receive the files you want to move into it. (When you first open a disk image, there may not be a sidebar and/or toolbar; if so, select +View > Show Toolbar+ from the Finder menubar.)
To access this disk image from another computer, you must first eject it from this one, since only one can mount it at a time. Otherwise, the other one will see a message that the disk image is "Temporarily unavailable."
Note that you may be able to change the size of the disk image later, via +Images > Resize+ from the Disk Utility menubar (while the disk image is not mounted or selected in Disk Utility's sidebar).
+Go to Top+
_*Q4. My Time Capsule is too small to back-up my Mac(s). Now what?*_
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You can attach a USB drive to your Time Capsule. Then you can back up to the USB drive instead of the Time Capsule's internal HD. If you have multiple Macs, you can back some up to the TC's internal drive, and others to the USB drive.
If you need even more space, you can connect multiple USB drives via a hub (a powered one is usually best), and back up different Macs to each. What you cannot do, however, is have one Mac's backups continue from the Time Capsule's internal HD to a USB drive connected to it, or have the backups for any one Mac "span" two drives.
The exception is, you can connect two (or more) drives that are in a +concatenated RAID+ set (sometimes called +RAID 0).+ In that configuration, all the drives in the set are treated as a single volume (see +Concatenated RAID+ in the Help for Disk Utility for details). This configuration may cause some other difficulties; once they're in a RAID set, you cannot connect any drive to your Mac separately -- it's all or none. And if one drive fails, you risk losing everything on all the drives in the set.
See question #Q2 above for setup instructions for backing-up to the USB drive.
+Go to Top+
_*Q5. Should I delete backups? If so, how?*_
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It depends on exactly what you want to do, and why.
Under normal circumstances, you shouldn't have to delete anything. TM automatically "thins" (deletes) backups every time it does a new backup, on the following schedule:
"Hourly" backups after 24 hours (except the first of the day, which is a "Daily" backup).
"Daily" backups after a month (except the first of each week, which is a "Weekly" backup.)
"Weekly" backups are kept until TM needs the space for new backups; then one or more of the oldest weeklies will be deleted.
However, TM will never delete the backup copy of anything that was on the disk being backed-up at the time of any remaining backup. So all that's actually deleted are copies of items whose originals were changed or deleted before the next remaining backup.
But if you do need to delete backups, here's how:
To delete individual backups, or all backups of selected item(s), see #12 in the Frequently Asked Questions *User Tip,* also at the top of the +Time Machine+ forum.
To delete everything on the Time Capsule's internal HD, use +*Airport Utility.+* Select +*Base Station > Manual Set-Up+* from the Menubar, then Disks in the tool Bar, then Erase.
To delete everything on a connected USB drive/partition, you can delete via the Finder, but that may take a very long time. It may be faster to disconnect it from your Time Capsule, connect it directly to your Mac, and use Disk Utility (in your Applications/Utilities folder) to erase the disk/partition.
To delete all the backups for one Mac, without disturbing anything else on the Time Capsule's internal disk, open the TC via the Finder and delete the sparse bundle associated with that Mac.
To delete all the backups for one Mac, without disturbing anything else on a connected USB drive, either open the USB drive via the Finder and delete the sparse bundle associated with that Mac, or disconnect the drive from the TC, connect it directly to your Mac, and delete the sparse bundle from there.
+Go to Top+
_*Q6. How do I back-up my Time Capsule and/or attached USB drive(s)?*_
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That depends to some extent on what you want to back up, and where it is.
It's generally not a good idea to try to back-up your Time Machine backups. If there's a problem with them, it will be copied to (and perhaps magnified on) the copy.
A better solution is probably to use either Time Machine or a different application to make separate, independent backups of your Mac, to a different destination. A portable external hard drive is great for this; you can periodically connect it to your Mac, make a backup, then take it to a secure off-site location, so you're protected against fire, flood, theft, direct lightning strike on your power lines, etc. If you use Time Machine for this, you'll have to use the disk selection process each time you want to switch, via +Time Machine Preferences.+
Many folks use the CarbonCopyCloner or SuperDuper! apps to make "bootable clones" of their internal HD to an external HD. While these usually don't have "archived" copies of previous versions of things you've changed or deleted, you can boot and run your Mac from them if your internal HD fails. Your Mac may run a bit slower, but it will be usable. Both are easily found via Google.
Since Time Machine cannot back up your Time Capsule's internal hard drive, or a USB drive connected to it, if you have other data there, you'll need a different method to back up that other data.
In a pinch, you can disconnect a USB drive from your Time Capsule, attach it to your Mac, and copy or back it up that way.
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There is a procedure that will let you "archive" the TC's internal disk to a USB drive connected to it.
But it's not quick, since since the data must be read from the TC's internal disk to your Mac, then sent *back through the Time Capsule* to the connected USB drive. And it's "all or nothing" -- you can only use this procedure to copy the entire contents.
All users will be disconnected from both the internal HD and the connected USB disk (but the network will remain usable).
Attach a USB drive with at least as much free space as the total amount of data on the TC's internal HD (see #5 in the Frequently Asked Questions *User Tip,* also at the top of the +Time Machine+ forum, for formatting instructions).
Turn Time Machine "Off" via +Time Machine Preferences.+ Stop all processes that may be accessing the Time Capsule's disk. If possible, connect your Mac to the Time Capsule with an Ethernet cable -- it will still be slow, but faster than WIFI.
Then follow this Apple procedure: Using AirPort Utility 5.3.1 or later to make a copy of the Time Capsule disk.
+Go to Top+
PROBLEMS
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_*P1. The Backup disk image could not be created.*_
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Oddly enough, Time Machine can be rather picky about the way certain things are named.
Check your +*Computer Name*+ at the top of the System Preferences > Sharing panel.
It must not be blank; it should not be more than 25 characters long; and you should avoid punctuation, spaces, and special characters.
After changing it, click the Edit button and make the corresponding change to the +*Local Hostname.+*
If that doesn't help, apply the same rules to the name of your Time Capsule and Network, via +Airport Utility.+
+Go to Top+
_*P2. Time Machine could not complete the backup .. sparsebundle could not be accessed. (Error 109).*_
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The sparsebundle containing your backups is corrupted.
Try Repairing it, per #A5 in the Time Machine - Troubleshooting *User Tip,* also at the top of the +Time Machine+ forum.
If the sparsebundle is on your Time Capsule's internal HD, and Disk Utility can't fix it, your only option is to delete it (or erase the TC's disk), and let Time Machine start over. You may be able to prevent this from happening again by changing the names per problem #P1 above.
If the sparsebundle is on a USB drive connected to your Time Capsule, and Disk Utility can't fix it, it's possible a heavy-duty 3rd-party +Disk Repair+ application, such as +Disk Warrior+ can. (You'll have to connect the drive directly to your Mac.) These are not cheap, and there's no guarantee they can fix it. Be certain whatever you use is compatible with your OS. For Disk Warrior, you need at least version 4.1.1 for Leopard, 4.2 for Snow Leopard.
+Go to Top+This tip is ready for consideration.
It is an update to the current Tip at: http://discussions.apple.com/thread.jspa?threadID=2296894
Changes:
Q1: replaced info about the TM icons with a link to the TM FAQ tip.
Q2: added info about RAID sets attached to a TC
Q6: reworded a bit and replaced last paragraph with a link to the Apple article. -
How to get the values in a single row without using union
Hi,
I have a table with the following structure and data
empid address phoneno emailid
1001 xyz
1001 1234234
1001 [email protected]
1002 23434
1002 [email protected]
1003 abcd
1003 [email protected]
1004 [email protected]
I need to have a result in this format.
emp id address phoneno emailid
1001 xyz 1234234 [email protected]
1002 23434 [email protected]
1003 abcd [email protected]
1004 [email protected]
I can do it using union however that gives a performance issues with a large table. So I wish to do using in any other way using lead or something, but with the complexity about the data, I couldn't do it.
Can anyone please help me?
Natarajan
Edited by: Nattu on Dec 3, 2009 3:50 PMSelect employee_id, max(address), max(phone), max(email)
from emp
group by employee_id;Max -
ORA-27054: NFS file system where the file is created or resides is not mounted with correct options
Hi,
i am getting following error, while taking RMAN backup.
ORA-01580: error creating control backup file /backup/snapcf_TST.f
ORA-27054: NFS file system where the file is created or resides is not mounted with correct options
DB Version:10.2.0.4.0
while taking datafiles i am not getting any errors , i am using same mount points for both (data&control files)[oracle@localhost dbs]$ oerr ora 27054
27054, 00000, "NFS file system where the file is created or resides is not mounted with correct options"
// *Cause: The file was on an NFS partition and either reading the mount tab
// file failed or the partition wass not mounted with the correct
// mount option.
// *Action: Make sure mount tab file has read access for Oracle user and
// the NFS partition where the file resides is mounted correctly.
// For the list of mount options to use refer to your platform
// specific documentation. -
Hi,
I just bought a new Macbook Pro 15" with SSD 256 Gb and its almost a brand-new (the 4th time to use the device) a while ago i was trying to connect to my home wireless network it said that the connection is timed out so i clicked the airport sign on the top it said that your airport is not configured then I restarted the system but it didn't restarted it showed the grey screen with the apple logo and the spinning wheel for more than 10min so I tried the force shutdown by pressing the power button till it switched off I waited for 5min then pressed the power button to start or boot the system and again the grey screen with the apple logo and the spinning wheel, I waited for more than 20min nothing changed, any solution please?
Your help is really appreciated"Thanks a lot i followed the instructions for safe mode (i found out that i was pressing the C button after restarting) i did whats written there but the repair couldn't be performed so in addition i needed to re-formate the HD so i erased the volume and then repaired the disk--> quite disk utilities --> start the installation from the installation DVD.
Thanks really appreciating your help -
Links that used to work with pre Firefox v4.0 no longer work
I need access to a work related website. the main page of the website opens up with out any issues, but when I click on any of the links nothing happens. This is a new issue that only started once I upgraded to Firefox 4.0. I previously had no issues using this website with Firefox before. I tried using the website with Explorer and had no issues.
I have iPhone software 2.2.1 (SH11),
MAC 0S X 10.5.5
XCode 3.1.2
In organiser it says The Developer Disk Image could not be mounted.
Xcode could not find an appropriate Developer Disk Image to mount on Richard’s iPhone. Please contact Apple for the 2.2.1 (5H11) device support package.
Also in Xcode it says that the active sdk is Device - 2.2. There is no version 2.2.1 for me to select and I cannot add a new active SDK.
I have downloaded the iphonesdk_for_iphone_os2.2.19m2621afinal.dmg and tried installing it which had no effect to the error above.
I tried uninstalling Xcode then re-installing using this sdk but again no effect
I tried installing the iPhoneSDK_2.2 on its own but again no effect
I tried restoring the iPhone but again no effect
I've tried the above numerous times, restarting xcode and restating the complete system but still to no effect.
I am relatively new to MACs so I might be doing something wrong (ie not installing or uninstalling properly) but I am really lost now as to what to do.
Please advise.
Thanks
Richard -
Tecra R940 with SSD Windows 7 boot failure
My company has purchased Tecra R940 laptops and are replacing the existing HDD with Kingston SSDNow 200 V+ 120GB SSD drives. On a test unit after installing the SSD, the laptop was rebuilt with our corporate image (Windows 7 x64) which completed successfully.
Post build however a number of issues are apparent:
1. Occasionally during a reboot, the laptop will post and then hang at the "starting windows" screen before the Windows logo animation is displayed and with the hard drive light on solid. After a period of time an Windows recovery is attempted and eventually an error reported:
Status: 0xc00000e9
Info: An unexpected I/O error has occurred
This issue does not occur at every boot but once in every 2 or 3.
2. The following error is logged in the Windows System log
Source: ATAPI
Event ID: 11
Description: The driver detected a controller error on \Device\Ide\IdePort0
I have tried the following in order to resolve the issue:
1. Upgraded the R940 BIOS to latest available (6.40).
2. Confirmed that the BIOS SATA Controller Mode is set to AHCI.
3. Confirmed there are no available SSD drive firmware updates.
4. Installed the latest Intel Rapid Storage Technology Driver from Toshiba (11.0.0.1032).
5. Tried an alternate SSD. Same errors noted, so not a faulty SSD.
6. Tried the SSD in a Toshiba Portege R930. In this case the errors above are not apparent.
7. Reinstalled the original HDD. In this case the errors above are not apparent.
8. Confirmed a 2nd unit (with SSD installed) logs the same Event ID 11.
My testing has left me at a point where I believe there is something wrong at the R940 end with either hardware or software that does not like SSD's.
Has anyone resolved a similar problem or have any thoughts on resolving this?
Thank you in advance.> Reinstalled the original HDD. In this case the errors above are not apparent
So using an HDD everything works properly
So the controller seems to be OK.
I searched for Even ID 11 error description and the Event ID 11 source disk means The driver detected a controller error on \Device\Harddisk0\DR0
There are many people having such issue with different notebooks and different SSD drives.
There is also different recommendation to solve this:
Someone could solve this my SSD drive firmware update
The other one solved this by running a full SMART scan with repair (reallocation of unstable sectors)
There is also an newer version of the Intel Rapid Storage Technology Driver available on Intel page.
So its worth to update this,
http://downloadcenter.intel.com/Detail_Desc.aspx?DwnldID=21730
Maybe you are looking for
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PDF e-mail attachment will not open after FF update
FF 31 and/or 32 Outlook or GroupWise fat client PDF attachments After FF updated PDF's were re-associated with FF not the installed PDF program. Used Windows to re associate PDF's to PDF program. No problem, all PDF's open in PDF program UNLESS the P
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I have plug-ins that are only in AE (CS4) but would prefer to render using Adobe Media Encoder. If I export an Adobe Premiere project it won't carry with it the plug-in effects I assume. Whats the solution?
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On opening some pdfs in new tab, get a box labeled Adobe Acrobat with a ? in it. Go back to the original link, right click on the link gets the pdf. What does the box and ? mean and why do I get it when trying to open some pdfs? Running W7, FF 10.0.2
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I have a JAR file that load and works find when I use the loadjava utility, but my software is now being deployed to a server that I don't have remote access to and can't connect remotely to the Oracle database. I need to push out updated JAR files p
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Can I use Itunes even tho I do not have an I phone
can I use Itunes even tho I do not have an IPhone. I have a sansa mp3 player