Removing raid1 from system disk for Safe Boot & OS upgrade?

I have my system on raid1 and so I can't boot to Safe Mode for OS upgrade.
I'd like to hear opinions & experience about this.
1) Is it possible to
a) delete raid1 in Disk Utility
b) Safe Boot to one of the disks from raid1
c) Upgrade OS
d) rebuild raid1 with upgraded OS
2) Is Safe Boot still good idea for upgrading OS in Leopard?
3) Is deleting & rebuilding raid1 for OS upgrade worth for all the hassle needed?

Sorry, I put this post in the wrong place!

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HT201364 how do I remove items from startup disk to load OS X Mavericks?

I'm trying to load OS X Mavericks and I'm getting a message to remove items from startup disk. Can anyone tell me how to do that??

For information about the Other category in the Storage display, see this support article. If the Storage display seems to be inaccurate, try rebuilding the Spotlight index.
Empty the Trash if you haven't already done so. If you use iPhoto, empty its internal Trash first:
iPhoto ▹ Empty Trash
Do the same in other applications, such as Aperture, that have an internal Trash feature. Then reboot. That will temporarily free up some space.
According to Apple documentation, you need at least 9 GB of available space on the startup volume (as shown in the Finder Info window) for normal operation. You also need enough space left over to allow for growth of the data. There is little or no performance advantage to having more available space than the minimum Apple recommends. Available storage space that you'll never use is wasted space.
When Time Machine backs up a portable Mac, some of the free space will be used to make local snapshots, which are backup copies of recently deleted files. The space occupied by local snapshots is reported as available by the Finder, and should be considered as such. In the Storage display of System Information, local snapshots are shown as Backups. The snapshots are automatically deleted when they expire or when free space falls below a certain level. You ordinarily don't need to, and should not, delete local snapshots yourself. If you followed bad advice to disable local snapshots by running a shell command, you may have ended up with a lot of data in the Other category. Reboot and it should go away.
See this support article for some simple ways to free up storage space.
You can more effectively use a tool such as OmniDiskSweeper (ODS) or GrandPerspective (GP) to explore the volume and find out what's taking up the space. You can also delete files with it, but don't do that unless you're sure that you know what you're deleting and that all data is safely backed up. That means you have multiple backups, not just one. Note that ODS only works with OS X 10.8 or later. If you're running an older OS version, use GP.
Deleting files inside an iPhoto or Aperture library will corrupt the library. Any changes to a photo library must be made from within the application that created it. The same goes for Mail files.
Proceed further only if the problem isn't solved by the above steps.
ODS or GP can't see the whole filesystem when you run it just by double-clicking; it only sees files that you have permission to read. To see everything, you have to run it as root.
Back up all data now.
If you have more than one user account, make sure you're logged in as an administrator. The administrator account is the one that was created automatically when you first set up the computer.
Install the app you downloaded in the Applications folder as usual. Quit it if it's running.
Triple-click anywhere in the corresponding line of text below on this page to select it, then copy the selected text to the Clipboard by pressing the key combination command-C:
sudo /Applications/OmniDiskSweeper.app/Contents/MacOS/OmniDiskSweeper
sudo /Applications/GrandPerspective.app/Contents/MacOS/GrandPerspective
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad. Click Utilities, then Terminal in the icon grid.
Paste into the Terminal window (command-V). You'll be prompted for your login password, which won't be displayed when you type it. You may get a one-time warning to be careful. If you see a message that your username "is not in the sudoers file," then you're not logged in as an administrator.
The application window will open, eventually showing all files in all folders, sorted by size. It may take a few minutes for the app to finish scanning.
I don't recommend that you make a habit of doing this. Don't delete anything as root. If something needs to be deleted, make sure you know what it is and how it got there, and then delete it by other, safer, means. When in doubt, leave it alone or ask for guidance.
When you're done with the app, quit it and also quit Terminal.

If i upgrade Snow Leopard to lion, all information will be removed? from hard disk ?, if i upgrade Snow Leopard to lion, all informatio will be removed from hard disk ?

if i upgrade Snow Leopard to lion, all information will be removed? from hard disk ?, if i upgrade Snow Leopard to lion, all informatio will be removed from hard disk ?

John Hammer said it best -- backup first and always. That's why Time Machine and periodic clones of your boot drive to an external disk are so valuable.
That said – the Lion upgrade will retain all user data, files, settings, mail, and preferences. Mind you that a few settings and their location have changed.
Before you actually use Lion, may I recommend spending the first evening looking at every single preference panel in System Preferences. Many of the user interface choices can be reverted back to mimic Snow Leopard if you choose.
Relax and enjoy Lion – it is amazing. Please holler if we can help further.

Unable to update software or upload pics from SD card-how do I remove files from startup disk? Please help!

Unable to update software or upload pics from SD card-how do I remove files from startup disk? Please help!

Hello Smile_333
The article below will assist with finding things and help increase the hard drive space for your computer. The best way is to have an external hard drive to copy things to if you do not want to delete and loose things.
OS X Mountain Lion: Increase disk space
http://support.apple.com/kb/PH10677
Thanks for using Apple Support Communities.
Regards,
-Norm G.

Mount a disk on safe boot mode

I'm trying to mount a disk on safe boot mode.
After login,I'm able to mount the boot disk with write permission by using command "mount -uw /" , but how can I mount other disk, say "/dev/disk0s1"?

In the Terminal, you may want to run the command "man mount" to access the manpage (help page) for the mount command.
To mount a disk other than the boot disk you must run the command "mount /dev/diskXsY /Volumes/diskname" where X and Y are the drive and partition number, respectively, and diskname is the name of the disk.

Hi i got a few free app before and did not download them completely and dont want to do this but they stay in my download list and start automatly when i connect to itunes store and going to crazy me how can i remove them from my account for ever please h

hi
i got a few free app before and did not download them completely and dont want to do this
but they stay in my download list and start automatly when i connect to itunes store and going to crazy me
how can i remove them from my account for ever
please help me
thank you

Try Here > https://discussions.apple.com/thread/4074945?tstart=0

Opening the HDrive with Mac booted from System disk? Any help please?

Is it possible to open the HDrive and look/search for files inside it
while my Mac is started from manufacturer's system disk?
(It seems to me I can do just system reinstall and use dusk utilities but have no way to see what is in the HD)
I am a novice and any tip from experienced users is welcome!
My MacBookPro has OSX 10.6

Thanks Kappy for this reply, which is my first glimpse in really hi tech things!
I started with opening Terminal and
following line appeared :
-bash-3.2#
next to it I entered as you told me:
/sbin/mount -uw /
and clicked on return (here I don't know if it is right thing to do ) and got this :
usage: mount [-dfruvw] [-o options] [-t ufs | external_type] special node
mount [-adfruvw] [-t ufs | external_type]
mount [-afruvw] special | node
followed by another new line:
-bash-3.2#
( I tried to to type lines as accurately as possible because I can copy them in Terminal but have nowhere to paste them - the laptop in question works only when booted from CD.)
So, from this point I don't know how to proceed - where to enter the line you recomended: cp /Users/stephanie /Volumes/Backup/stephanie
and what are the exact steps to perform...
Also I don't quite understand what is "Home folder" -is it the administrator account folder which I named when installed the system for first time?
In my computer it is named "steph77"
Also some extra info that may assist you:
My external drive is named "LaCIE" and is plugged in the MacBook.
My internal hard drive to which I want access is named "MacHD" and my account
steph77 is inside it.
Can you help me with the steps to accomplish my task?
It is my first time meeting with command line and am a bit lost but very determined to learn it!
Thanks in advance Kappy , waiting for your reply !
Stephanie.

HT203176 Unable to boot from System disk to access Disk Utility

Hello
I need want to run Disk utilities on my mac. Have done this before using system disk and holding C etc.
Since upgrading to Snow Leopard from Leopard it no longer sees my system disk.
Restart holding down C with system disk installed...and mac just boots-up normally!
Can anyone suggest what the problem is?
NB: Ultimately I want to run the disk utility to check that the Hard Drive is healthy after install.

Hi chaps
You get the picture....holding down the C key expecting to see the install software option and all I was getting was my desktop. I tried the option key and no joy there either. I was beginning to think it was the two Mac superdrives installed in my mac which are a nightmare. They only seem to be able to read mac disks!!! all a bit incestuous. I found out via the forums that the Sony DVD RW DW-D150A have taken up a lot of airtime. Still pondering what I can do about them...they were fine and the 2nd drive has never really been used. Apparently they are a rebadged NEC burner but they suddenly decided to get choosey about what disks to read....anyway sorry I am losing focus.
Stuck the Snow Leopard disk and instead of restarting or holding C I just clicked on the desktop icon and pressed the install 10.6 button. It huffed and puffed and chugged away turning my screen blue and then grey and finally coming up with a box with two options...install 10.6 or Utilities. Pressed utilities and I was in familiar ground...Disk First Aid!!!! Ran the verifications and repair buttons and a few fixes and job done....a healthy report on the state of my HD.
To be fair the small booklet does say... to install Snow Leopard insert your installation disc and double-click install Mac OSX. I guess I am so used to using previous versions of the OS and pressing C etc hat I did not realise I could access the utilities/First Aid the same way. Took the best part of my day to do this and if they had put in a 3rd paragraph in the booklet to say access Utilites/First Aid the same way my life would have been a whole lot easier.
Now scared to upgrade to Lion as I really am not enjoying the mac experience at the moment....too much depends on my mac and software working without having to worry about technicalities or IT. It’s just not my bag. Thanks guys for the suggestions and your time. I am interested on your opinions with regards to the two superdrives! I have stuff on old DVDs and it just doesn’t see them but it used to...why? My fault for buying two of the buggers I suppose.
Regards
Simon (Mac fan)

Msg states: "your Mac os x startup disk has no more space available for application memory...Removing files from startup disk may help." yet, I have 299.11GB of 319.73GB available. Why is msg received?

The full message reads as, "
Force Quit Applications
Your Mac OS X startup disk has no more space available for application memory.
To avoid problems with your computer, quit any applications you are not using. Closing windows and removing files from your startup disk will also help."
Currently I have:
Capacity: 319.73GB ; Available: 299.11GB ; Used: 20.62GB
Why am I receiving this message and being forced to force quit items? Both times the message has been received, Safari was open (frozen) while checking yahoo! mail.
I received my MacBook Pro as a gift less than a month ago and I have only saved 20 pictures within iPhoto and installed Skype and Vuze...no other modifications from default have been made.
Any idea?

The full message reads as, "
Force Quit Applications
Your Mac OS X startup disk has no more space available for application memory.
To avoid problems with your computer, quit any applications you are not using. Closing windows and removing files from your startup disk will also help."
Currently I have:
Capacity: 319.73GB ; Available: 299.11GB ; Used: 20.62GB
Why am I receiving this message and being forced to force quit items? Both times the message has been received, Safari was open (frozen) while checking yahoo! mail.
I received my MacBook Pro as a gift less than a month ago and I have only saved 20 pictures within iPhoto and installed Skype and Vuze...no other modifications from default have been made.
Any idea?

HT1752 Seeking a copy of the boot system disk for Macintosh 512k..

I recently acquired a Macintosh 512k at an estate sales, minus the boot system disks..I'd need someone to make a copy of, or if you have a spare copy, I'll pay you for it.. Thanks~ Vern

Hi,
http://www.hardwaresecrets.com/printpage/How-to-Generate-Floppy-Disks-for-Old-Ma cintosh-Computers/1713
http://rescuemyclassicmac.com/buyadisk/buyadisk.html
http://earlymacintosh.org/disk_images.html

Most efficient way to delete "removed" photos from hard disk?

Hello everyone! Glad to have this great community to come to for help. I searched for this question but came up with no hits. If it's already been discussed, I apologize and would love to be directed to the link.
My wife and I have been using LR for a long time. We're currently on version 4. Unfortunately, she's not as tech-savvy or meticulous as I am, and she has been unknowingly "Removing" photos from the LR catalogues when she really meant to delete them from the hard disk. That means we have hundreds of unwanted raw photo files floating around in our computer and no way to pick them out from the ones we want! As a very organized and space-conscious person, I can't stand the thought. So my question is, what is the most efficient way to permanently delete these unwanted photos from the hard disk
I did fine one suggestion that said to synchronize the parent folder with their respective catalogues, select all the photos in "Previous Import," and delete those, since they will be all of the photos that were previously removed from the catalogue.
This is a great suggestion, but it probably wouldn't work for all of my catalogues since my file structure is organized by date (the default setting for LR). So, two catalogues will share the same "parent folder" in the sense that they both have photos from May 2013, but if I synchronize May 2013 with one, then it will get all the duds PLUS the photos that belong in the other catalogue.
Does anyone have any suggestions? I know there's probably not an easy fix, and I'm willing to put in some time. I just want to know if there is a solution and make sure I'm working as efficiently as possible.
Thank you!
Kenneth

I have to agree with the comment about multiple catalogs referring to images that are mixed in together... and the added difficulty that may have brought here.
My suggestions (assuming you are prepared to combine the current catalogs into one)
in each catalog, put a distinctive keyword onto all the images so that you can later discriminate these images as to which particular catalog they were formerly in (just in case this is useful information later)
as John suggests, use File / "Import from Catalog" to bring all LR images together into one catalog.
then in order to separate out the image files that ARE imported to LR, from those which either never were / have been removed, I would duplicate just the imported ones, to an entirely separate and dedicated disk location. This may require the temporary use of an external drive, with enough space for everything.
to do this, highlight all the images in the whole catalog, then use File / "Export as Catalog" selecting the option "include negatives". Provide a filename and location for the catalog inside your chosen new saving location. All the image files that are imported to the catalog will be selectively copied into this same location alongside the new catalog. The same relative arrangement of subfolders will be created there, for them all to live inside, as is seen currently. But image files that do not feature in LR currently, will be left behind by this operation.
your new catalog is now functional, referring to the copied image files. Making sure you have a full backup first, you can start deleting image files from the original location, that you believe to be unwanted. You can do this safe in the knowledge that anything LR is actively relying on, has already been duplicated elsewhere. So you can be quite aggressive at this, only watching out for image files that are required for other purposes (than as master data for Lightroom) - e.g., the exported JPG files you may have made.
IMO it is a good idea to practice a full separation of image files used in your LR image library, from all other image files. This separation means you know where it is safe to manage images freely using the OS, vs where (what I think of as the LR-managed storage area) you need to bear LR's requirements constantly in mind. Better for discrete backup, too.
In due course, as required, the copied image files plus catalog can be moved bodily to another drive (for example, if they have been temporarily put on an external drive, and you want to store them on your main internal one again). This then just requires a single re-browsing of their parent folder's location, in order to correct LR's records inside this catalog, as to the image files' changed addresses.
If you don't want to combine the catalogs into one, a similar set of operations as above, can be carried out for each separate catalog you have now. This will create a separate folder structure in each case, containing just those duplicated image files. Once this has been done for all catalogs, you can start to clean up the present image files location. IMO this is very much the laborious and inflexible option, so far as future management of the total body of images is concerned... though there may still be some overriding reason for working that way.
RP

Partitioning a disk for dual boot

My system disk failed last week. The media just stopped holding a proper magnetic charge so I ended up with loads of bad blocks.
The disk was 120 GB in size.
I replaced it with a 500 GB model. But I didn't need the extra space for the system disk so I partitioned it into 2 drives (Mac OS Extended). The first one I set to 185 GB and the second one I made 300 GB. The rest of the space was lost due to rounding.
I restored the 185 GB partition from my backup copy (Retrospect 5) and was quite satisfied with the results - Mac OS 9.2.2. I also was able to access the other (empty) partition successfully.
I booted the system into 9.2.2 from partition #1 and decided to install OS X on the larger partition. So I loaded up the Tiger Install disk #1. The install process started but when I was asked to select a target drive the empty second partition was not in the list of choices.
Why?
I want to have a dual boot capability on the single drive. How do I do that?
Gary

Not all G4s supported drives greater than 128 GB:
http://support.apple.com/kb/HT2544
http://lowendmac.com/2005/how-big-hard-drive-imac-emac-power-mac-powerbook-ibook /

Will it work to un-install Snow Leopard (booting from original disks) and then reinstall, then upgrade without erasing hard drive on iMac?

I have both a bootable backup exernal hard drive and the original system disks. I have read on these support pages that you cannot get snow leopard freshly installed without erasing the whole whole drive since the original installation disks are older than the current updated version. I have also read here that it is possible to get the system newly installed (though it's wise to have a back up of the rest of your files). I need to know which can work. Is there an un-install function after booting from a different source? If I can get the system filess off the main hard drive and then install Snow Leopard from my original disks, then go through the upgrades, and end up with the rest of my files intact, that would be wonderful. I have all the adobe design premium software on the system with their updates and would like to not spend hours and hours restoring it all. And since I don't know where all the little bits and pieces of the Adobe programs get installed, perhaps it won't work anyway?
thanks,
Kahty

I have read on these support pages that you cannot get snow leopard freshly installed without erasing the whole whole drive since the original installation disks are older than the current updated version.
That is incorrect. You can install an older version of the same OS over itself. With Snow Leopard and later, unless you intentionally select to erase the drive, the OS removes and replaces all remnants of the current OS and leaves all of your third party apps, personal files and settings intact.
I have also read here that it is possible to get the system newly installed (though it's wise to have a back up of the rest of your files).
That is the correct information.
Is there an un-install function after booting from a different source? If I can get the system files off the main hard drive and then install Snow Leopard from my original disks, then go through the upgrades, and end up with the rest of my files intact, that would be wonderful.
No, there is no way to remove just the OS files from a drive. At least, not in any manner you could call easy. There are thousands of hidden files and folders related to UNIX. Many apps won't even run correctly, or at all, if they're not on the same drive you are starting up to. So trying to separate your third party apps from the drive the OS is on is not a good idea.
I have all the adobe design premium software on the system with their updates and would like to not spend hours and hours restoring it all.
If your end goal is to simply get the contents of the external drive onto a new internal drive in a bootable form, you can use Disk Utility to clone the drive, or use one of two excellent third party apps; SuperDuper! or Carbon Copy Cloner.

In need of system disks for HD repair

The machine's been a little slow lately, so I randomly decided to "verify disk" in disk utility and got this response:
Verifying volume “Macintosh HD”
Checking HFS Plus volume.
Checking Extents Overflow file.
Checking Catalog file.
Checking multi-linked files.
Checking Catalog hierarchy.
Checking Extended Attributes file.
Checking volume bitmap.
Volume Bit Map needs minor repair
Checking volume information.
Invalid volume free block count
(It should be 1870686 instead of 1866823)
The volume Macintosh HD needs to be repaired.
Error: The underlying task reported failure on exit
Disk Utility stopped verifying “Macintosh HD” because the following error was encountered:
The underlying task reported failure on exit
1 HFS volume checked
Volume needs repair
I realize that I need to repair the disk from another volume. I purchased this computer 2 years ago from a private seller, and do not have the original system disks. Do I need OS 10.3 to do this since Tiger is only an upgrade? Do I need just the DVD or what? And where can I obtain these disks? Should I just head straight to DiskWarrior instead? Thanks
-mJ

What are the capabilities of the retail disks? Am I able to do a clean install from them if necessary, or would I need disks with my specific build number for that? Some people on craigslist are selling the retail disks for 10.4, but I believe its just the DVD. Ideally I know I should have both disks, but in this event can I be able to buy only the one I need? The only disks that I see sold privately are build-specific sets....just seems a little much to spend 300 bucks for the Tiger box just for volume repair. Just making sure before any purchases. Thanks
-mJ
Message was edited by: Mckendre Jay
Message was edited by: Mckendre Jay

Is it possible to get a system disk for my old iMac without the receipt?

I use an iMac at work and it's really slowing down. (10 minutes at least to open any application) I have 3 GB of ram and use only a quarter of my hard drive space. I've looked everywhere for the startup disk to no avail. I've used TechTool Deluxe and it says that the directory needs repair. When I used DiskUtitlity last, it says that the hard drive needs repair and to restart with the system disk and use Disk Repair. If anyone has any thoughts on this matter, I'm all ears.

No receipt is needed assuming they are still available for your vintage machine. All you need is a credit card and the machine's serial number. Then call AppleCare and if they are available they will ship a replacement set for a nominal cost.

Removing raid1 from system disk for Safe Boot & OS upgrade?

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