HT201250 How to Use One Time Machine External Drive to Back Up Two Macs

How do I set up two computers -- an iMac and a MacBook, both running Mountain Lion -- to use a single external hard drive for Time Machine backups?
Both are on an Airport Extreme network

Yes, it does.
I took it from there and the iMac is now backing up its contents on the HD.
Thanks very much for your knowledgeable and prompt help.
Best regards,
ed

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HT201250 How do you let time machine know that a restored drive does not need a brand new backup set and just append to the old one?

I had an external drive failure and had to buy a brand new drive. I was able to restore my info onto a new drive, about 1.5 TB of data. When I go to launch time machine now with the new drive connected and my backup connected, it treats the new drive as if it had different data and wants to create a whole new backup set when it should just append. How do I get around this?
I could just reformat the backup drive and start fresh again but would rather not do that if I can avoid it, just in case there were errors in copying etc.

Hi
I should have been more clear, sorry. I work from a laptop. I have 2 external drives - one for my projects which failed but has since been replaced and restored from a backup. My 2nd external drive is the time machine backup drive.
When my project drive crashed, I bought a brand new drive and restored it using my time machine backup drive.
Now the data exists on 2 drives - the time machine backup drive, and the new drive. When I connect the backup drive now, it thinks my new drive has new data, probably since it is a new device/drive, and wants to do a brand new backup, when in fact the data already exists on that very drive. It shouldn't have to back up all 1.5 TB when nothing has changed!
Unless there is a way to tell time machine to simply append to the old backup, I think it will try and do a new backup (1.5 TB). I'm thinking maybe I should just initialize my time machine backup drive now and start over so it is only one backup set of 1.5 TB instead of (2) sets of 1.5 TB!

HT201250 I've just used an external drive to back up my Mac with Time Machine. I have Lion, but didn't click and check the "Encrypt Backup Disc". What should I do? Can I delete the external drive and start again, or can I encrypt later?

I've just used an external drive to back up my Mac with Time Machine. I have Lion, but didn't click and check the "Encrypt Backup Disc". What should I do? Can I delete the external drive and start again, or can I encrypt later?

I guess if stolen or lost it would protect my "stuff", and if I'm travelling would protect my privacy.
You must understand the purpose and implications of encryption before deciding whether to use it.
Encryption locks your data with a password. If you forget that password, the data is lost beyond any chance of recovery. Neither Apple nor anyone else will be able to help you recover that data if you don't know the password.
By the same token, the password must be strong enough to provide the security you want. For example, if you're the potential target of industrial espionage by a government or large corporation, you need the strongest possible password. To create and manage such a password safely is a task in itself, not to be undertaken lightly.
If you're only concerned about casual snooping by someone with no special skill, a weak, easily-remembered password is appropriate.
But regardless of the strength of the password, if you lose it, the data is gone forever.
Another point to remember is that if you encrypt your data on one storage device, you must also encrypt it on all other storage devices that would be accessible to the same attacker. Otherwise the data isn't protected. For example, if you keep your computer and your backup drive in the same room, and the internal drive of the computer is not encrypted, then there's no point in encrypting the backup drive.

My hard drive died. How can I start my computer with my Time Machine external drive?

My hard drive died. How can I start my computer with my Time Machine external drive?

Pondini wrote:
If you're on 10.7.2, yes, you can boot from the TM drive.
Beep, beep, beep....
Hold ON! Getting a call on the red phone.
"Yes...yes.... ok!"
It's confirmed, H.e.l.l. has finally frozen over! TM drives are now bootable!
Still it's not a real bootable clone, can't run the computer off the external drive for long in only Recovery mode, still requires the boot drive to be replaced if it not functional, and with TM backing up every hour, isn't going to offer much software protection as the TM drive is just as likely to be as messed up as the internal boot drive.
For a iMac it still requires the computer to be taken in to Apple for a drive replacement, as ONLY Apple can do it due to proprietary connections and firmware on the iMac hard drives.
But it is bootable!
The backup time factor can be controlled using TimeMachine Editor, from every hour to just when the user thinks it's necessary.
Apple lurches slightly forward! Hurray!
Question is, can one restore from earlier stable TM's or just the last one? In this bootable fashion?

How do I restore the entire system from a Time Machine external drive?

Hello everyone,
Up front - I have searched through numerous threads but have not yet been able to solve my problem - even though it is presumably easy for many.
So... I had to bring in my late 2009 27" iMac to Apple to replace the hard drive - mine was one of the thousands affected by the defective Seagate 1 TB disk recall. I was told that the disk would be cloned, but nevertheless I made a full system backup with Time Machine to a dedicated external hard drive.
A week later and I now have my iMac back - but when I boot, I only see a white screen with a pointer, so it appears that the drive was not cloned - but that I now have a blank 1 TB disk, correct?
I have also tried booting with the external drive attached, thinking that the dedicated Time Machine external drive would allow me to boot directly from it and restore the system if need be - I booted with CMD+R, tried again with ALT ... no luck.
And I cannot find my Mac OS DVDs...
So... is the drive blank, or am I missing something here?
If so, how can I boot from the external Time Machine drive, or is that not possible either?
Any pointers greatly appreciated, thanks very much in advance.

Call Apple to get replacement DVDs > http://support.apple.com/kb/HE57
1. Insert the Mac OS X DVD and press C key while your computer is starting.
2. Go to Utilities menu and restore the backup.
You should have made a clone instead of the backup because Apple gives the hard disk without OS X

How to use the time machine?

how to use the time machine? because i don't know where to find the back up. can you please help me.. thankyou.

Time machine is a backup application and service that come with Leopard. When you plug in an external drive you can use it as a backup source. All you do is select the drive in the Time Machine control panel and start the backup. It will back up your whole drive and if you lose a file, go to the location on your drive where that file should be and open the Time Machine application. From there you will be able to migrate to all the points in "time" when the file was changed, and select the version of the file that you want. Then select "restore" and the file will be restored to the location where it last was on your drive.
For more information check out the Time Machine website:http://www.apple.com/macosx/features/timemachine.html

Hello I bought my wife a new MacBook Pro, in setting it up for her, I took her Time Machine external drive to migrate onto the new machine but her old MBP not only was on 10.6, it was my old machine which I was still Administrator for. i plugged in the

Hello
I bought my wife a new MacBook Pro, in setting it up for her, I took her Time Machine external drive to migrate onto the new machine but her old MBP not only was on 10.6, it was my old machine which I was still Administrator for.
i plugged in the external drive to start the migration process after entering her name and username from the old machine which gave me the options on transferring the old data over.
I also unchecked the Administrative end that had my info hoping that ONLY her data, files, etc., would be the ones sent over to her new machine which I wanted her to be the ONLY Administrator for. All went like clockwork until the restart.
Normally the screen should show the username and only need the password but both entries were blank, as in ‘Other’ sign in option available only. I entered her name and password, nothing….used her username and password, nothing. Used my old Administrator name and password, NOTHING!
I tried defaulting to factory settings from the Restore feature but it directs me to notify Apple. I tried in Terminal to change the password, nothing. I tried to boot from MY external drive and it doesn’t recognize it. I tried to even use my external drive which actually has the Mavericks upgrade, nothing!
Basically I can only get the startup screen which isn’t accepting the username/password or the Restore feature which doesn’t offer any options helpful!
Please, how do I start from scratch and start over here? Or simply change the Administrator name and password so I can proceed with everything thats already on there? I wish I could even boot from another drive but no luck on anything!

First, on the old machine, make your wife's account an admin one. Log into it and delete yours. Then, update the TM backup. Finally, use Internet recovery mode, ⌘⌥R, erase the HD, and restore the OS. One first boot, follow the steps outlined in Pondini's Setup New Mac guide.

Lion time machine - external drive spin up causing apps to crash

I have a 1TB external drive set up for time machine backups on my 27" iMac running Lion 10.7.3 that seems to be causing my Adobe CS 5.5 suite of apps (photoshop in partiucular) to crash as the drive spins up. If an adobe application or lion/time machine is asking the drive to spin up I have no idea, but it seems random, and when it does, the adobe app(s) freeze and the beach ball from **** just spins. All other applications remain uneffected which leads me to believe it's related to a scratch disk function of some sort. I've googled high and low to find an scrap on insight into this issue and have found nothing...
Few questions:
• Why does the time machine external drive randomly spin up even though there are no backup processes running?
• Why would an adobe app would need to access an external drive?
Before anyone says it, I know I can always just eject the drives, but I'd rather keep my backups running for obvious reasons. If a complete wipe and install is the only solution recommended by the doctor, I will. It's just maddening to regularly loose work. Any help is greatly appreciated!
iMac: Mid 2010 27"
Processor 2.8 GHz Intel Core i5
Memory 8 GB 1333 MHz DDR3
Graphics ATI Radeon HD 5750 1024 MB
Software Mac OS X Lion 10.7.3 (11D50)
Adobe CS 5.5
Photoshop CS5 / v12.1 x64
Illustrator CS5 / v15.1.0
InDesign CS5.5 / v7.5.2
External Drives
Firewire800: 2TB Hitachi G-Drive: http://www.g-technology.com/products/g-drive.cfm
USB: 1TB Western Digital MyPassport 0730

Set the TM drive not to spin down, I think there is a setting in the system preferences.
Could be the G drive feature,
consider making option key bootable clone drives
Most commonly used backup methods explained

I need to erase my hard drive and start anew, will time Machine(external drive) and all the discs I got with my computer be enough to restart things

I need to erase my hard drive and start anew, will time Machine(external drive) and all the discs I got with my computer be enough to restart things. And secondly does RAM memory cards go bad. Here's the info on my IMac:
Model Name:          iMac
Model Identifier:          iMac6,1
Processor Name:          Intel Core 2 Duo
Processor Speed:          2.16 GHz
Number Of Processors:          1
Total Number Of Cores:          2
L2 Cache:          4 MB
Memory:          3 GB
Bus Speed:          667 MHz
Boot ROM Version:          IM61.0093.B07
SMC Version (system):          1.10f2

I need to erase my hard drive and start anew
Why do you feel you need to do this? That is such a 'Windows thing' to do!
And secondly does RAM memory cards go bad
Very rarely, but nothing in life is guaranteed (except death and taxes)! If you purchased RAM from a reputable source like Crucial or OWC it will carry a lifetime warranty.

I cannot get time machine (with airport) to back up my mac. It worked previously but not now. It is working on my macbook. the message i get is "Time Machine couldn't back up to '(airport network name)'"

I cannot get time machine (with airport) to back up my mac. It worked previously but not now. It is working on my macbook. the message i get is "Time Machine couldn't back up to '(airport network name)'" Any help is appreciated.

OS is important.. What OS is on Mac and what is on the working macbook?
Was the Airport setup from the Macbook? That might be why it works from there..
Does the AE show up in Mac airport utility?
Can you mount the disk in finder and copy files to it/from it??
Did you try a TM reset after mounting in Finder.. so you know it is available?
What about a network reboot.. does it work post a restart for a few minutes/hours/days???

HT201250 how do I disable time machine? I want to use my external drive as additional storage. But it mirrors everything I edit. If I remove a document, it removes it from the external drive as well.

how do I disable time machine? I want to use my external drive as additional storage. But it mirrors everything I edit. If I remove a document, it removes it from the external drive as well.
I purchased a 1 TB WD passport drive, formatted for Mac. I set it up originally (mistakenly) to backup time machine. I went back and set it to "do not backup" It still backs up evey document I edit. If I add a document when the drive is disconnected, it automatically adds it to the external drive the next time connect to the passport drive. If I remove a document the same thing happens.
I need additional storage to free up space on my laptop hard drive. This is not working the way I want it to. Help!

Do not backup your startup volume to another partition on the same drive. If the drive fails you have nothing. Always backup to another drive or volume on another drive.
The I/O error usually means there's a problem with the drive. Clone ASAP, then repartition and reformat the main drive. Then restore the clone. Here's the basic process:
You will have to backup your OS X partition to an external drive, boot from the external drive, use Disk Utility to repartition and reformat your hard drive back to a single volume, then restore your backup to the internal hard drive.
Get an empty external hard drive and clone your internal drive to the external one.
Boot from the external hard drive.
Erase the internal hard drive.
Restore the external clone to the internal hard drive.
Clone the internal drive to the external drive
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.
Restart the computer and after the chime press and hold down the OPTION key until the boot manager appears. Select the icon for the external drive and click on the downward pointing arrow button.
After startup do the following:
Erase internal hard drive
Open Disk Utility in your Utilities folder.
After DU loads select your internal hard drive (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.
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. Do not quit Disk Utility.
Restore the clone to the internal hard drive
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 internal hard drive. Source means the external startup drive.
Note that the Source and Destination drives are swapped for this last procedure.

HT201250 how do I get Time Machine to back up files (e.g. iPhoto) stored on an external hard drive?

Installed a new 3TB external hard drive for Time Machine. I have 2 other external hard drives attached to my iMac that contain iTunes and iPhoto. How can I point Time Machine to those external drives to include in the backup?

What is listed in System Preferences > Time Machine > Options... > Exclude these items from backups:?
Any attached external disk not listed there should be backed up.

Use external drive for both Time Machine and storage for Back to My Mac

Hi all,
I have been "a Mac" now for over a year and just keep finding cool new things that make me happy I switched. The latest thing is Back to My Mac offered with my Mobile Me account. With a rather convoluted mix of PC/Mac/iOS devices to manage - best $99 I ever spent btw...
I also have a 1TB Time Capsule that I have been using with Time Machine to back up all four of my Mac computers at home. Needless to say, the 1TB is really struggling to handle the amount of data being backed up and certainly leaves no room for anything else.
What I wanted to do was to attach a larger external hard drive via a powered hub to the USB port on the Time Capsule and use it for Time Machine backups while using the internal 1TB drive with Back to My Mac so that I can have remote access to all my data from anywhere without having to leave my computer running at home all the time in order for my laptop to "see" it when I'm away. And, yes, the amount of that data far exceeds what any level of Mobile Me subscription can offer! I should also mention that the hard drive is the only USB device connected through the hub to the Time Capsule at the moment. There are no other devices that might be "getting in the way".
I'm thinking maybe all this is asking too much without the addition of a dedicated file server (Mac Mini, perhaps - not a purchase my budget wants to make).
I understand that the Time Capsule doesn't support partitions, so I bought a Western Digital 2TB Elements drive, connected it to my Macbook Pro and used Disk Utility to reformat the drive from the incompatible NTFS it shipped in to a single, Mac OS Extended (Journaled) partition. I then made two folders on the drive, one for Time Machine backups and one for Back to My Mac remote storage/access. Great.
However, when I connected the 2TB drive to my Time Capsule I could not see it at all. Time Capsule was reporting problems in the way of a disk error. From within my Airport Utility, I could see the trouble was the external drive. The utility suggested connecting the drive to a Mac and using it's Disk Utility to troubleshoot.
I followed through, checking the disk, etc. and ended up reformatted the drive on my Macbook Pro yet again with the same specifications as before but without the folders and reconnected it to the Time Capsule. Same deal. But now, I can't even remotely connect to the Time Capsule at all. I can see the Time Capsule in the shared area of my Macbook's Finder but can not connect. The connection tries and fails even before it gets to asking me for username and password credentials.
Long story short, first of all, I suppose I would like to know if I'm asking for the impossible?
Second, if what I want to do *is* possible, what steps do I need to take to make it so?
Thanks in advance for any advice or suggestions you might have.

Well, I have now reformatted/partitioned my poor WD Elements 2TB drive about a dozen times as well as restarted my 1TB Time Capsule so many times it's no wonder it's as confused as I am! <G>
Last night, at your suggestion, William, and in respect for your continued support, I tried creating two 1TB Mac OS Extended (Journaled) partitions on the WD external USB drive, both with GUID partition tables. Both volumes mounted to my laptop's desktop flawlessly and without issue.
Once the external drive was connected to the Time Capsule, however, it was a crap shoot as to whether or not the drive was recognized at all, reporting a problem with the disk, or, even at one point, mounting one of the two volumes but not both. <sigh>
I read somewhere on the Internet that you need to restart the Time Capsule for volumes on an external USB drive to be recognized.
So I tried that. I connected the freshly partitioned/formatted disk to the Time Capsule and restarted it. This succeed in removing the issue of reporting a nameless drive with a capacity of 0MB. It then reported the drive with its correct name but would not recognize whatever volumes in whatever partitions that particular crack at it contained with the exception of the once, as I mentioned above, when only one of two volumes mounted correctly and was listed with the right name and capacity on the Time Capusule's Setup's Disk tab.
At this point I have given up on my goal to use the external drive with Time Machine to back up my Macs or to hope I will ever be able to see its contents remotely via Back to My Mac. All I would like to do now is simply find a reason why I can't get it successfully connected and playing nice with my Time Capsule in the first place!
Any further suggestions or advice as to what steps I might take next would be greatly appreciated.
Thank you all.

HT201250 Can I use one Time Capsule to back up two iMacs?

Can I use one Time Capsule to back up two iMacs using Time Machine? Both are running Mountain Lion.
Fouind the answer in other questions. Don't know how to remove this message. Sorry, Des

Yes, if you use an application like Genie Timeline Pro, which was designed for this type of purpose. Genie Timeline will make a complete copy of your Dell on the first backup. After that, it will only backup the changes that have occurred since the last backup.
Genie Timeline Pro | Overview | Time Machine Backup Software for ...

HT201250 How do I get Time Machine back on my dock? I made a mistake and removed it from dock, somehow ended up in trash, what do I do

How do I get Time Machine back on my dock? I made a mistake and removed it from dock, somehow ended up in trash, what do I do?

Uh…you're saying two entirely different things here. If you removed Time Machine from the Dock, it could not be in the Trash. But if you removed it from your Applications or Utilities folder and put it in the Trash, that's a problem.
So, which one did you really do?

HT201250 How to Use One Time Machine External Drive to Back Up Two Macs

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