How large should a disk for time machine be vs the hard disk

Can anyone tell me how large a disk for time machine be vs the size of the hard disk?

I usually say 2x or more but your milage may vary on that based on how much your hard drive is actually used, what sort of data (how large the files are) you typically handle and how far back you want your TM backup to go.

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How much should I partition for Time Machine/Backup?

Hi all,
I upgraded my PB G4 HD to a 160GB recently and have just purchased a 1TB External HD. How much should I partition in the external to be used for Time Machine backup purposes of my internal HD? Will the same size suffice, or should I allocate more?
Also, I was thinking of formatting the drive so that it's both Windows and OS X friendly, but that means formatting it to MS-DOS something (I was just reading about it in another thread), will that cause any issues for the partition for Time Machine that I created? Thanks.

Also, I was thinking of formatting the drive so that it's both Windows and OS X friendly, but that means formatting it to MS-DOS something (I was just reading about it in another thread), will that cause any issues for the partition for Time Machine that I created? Thanks.
That's not practical. If you want to use the hard drive on a Windows machin while still being useful for Time Machine you should use MacDrive.
I upgraded my PB G4 HD to a 160GB recently and have just purchased a 1TB External HD. How much should I partition in the external to be used for Time Machine backup purposes of my internal HD? Will the same size suffice, or should I allocate more?
I would make the partition at least twice the size of the internal drive. Preferably, you would want 50 GB for a Leopard install that includes just the base operating system so you can boot off the 50 GB to recover your Time Machine data if your Leopard installer disc ever becomes unusable.
Also since you have a Powerbook, your 1 TB hard drive should be Firewire. USB will not boot Powerbooks. If it is USB only, you can remove the external hard drive case and replace it with one compatible with the drive inside that case from http://www.macsales.com/ that has Firewire.

How to turn off the 'Use disk for Time Machine?' warning

I have Time Machine set to OFF.
I use cloning software instead; "SuperDuper" with a "Voyager Q" unit attached via FW 800
I rotate my external backups HDs using 2 x 3.5" HDs.
How do I get rid of the annoying message; ‘Use disk for Time Machine?’ each time I attach an external HD?
I have tried the solution at;
http://www.macworld.com/article/133175/2008/04/105notmdrive.html
but doesn't work for me.
Mind you, the article was written for 10.5 and I was hoping the same solution would apply to 10.6.
Anyone have an answer?
Many thanks in advance,
Michael.

Think I just found the answer to my own question.
External drive has to be mounted on the desktop BEFORE the following command is run.
defaults write com.apple.TimeMachine DoNotOfferNewDisksForBackup -bool YES
this assumes you've setup TM
Now I don't see that annoying message.

How do i make a make a backup disk for Time Machine?

I need a backup disk for Time Machine

You need an external hard drive. Here's a cheap SATA external hard drive case on Amazon http://www.amazon.com/Vantec-NexStar-2-5-Inch-External-Enclosure/dp/B002JQNXZC/r ef=pd_cp_pc_0
For a hard drive try Newegg.com http://www.newegg.com/Store/SubCategory.aspx?SubCategory=380&name=Laptop-Hard-Dr ives&Order=PRICE
Or OWC http://eshop.macsales.com/shop/hard-drives/2.5-Notebook/

Can two macs use same disk for Time Machine backup with Airport Extreme?

Hi
I use a Western Digital disk as a wireless Time Machine backup connected to the USB port on my Airport Extreme and it works great. My question is: can my girlfriend use that same disk for Time Machine backup from HER computer too? (I don't mind formatting the disk if needed.)
If she can't, is it then possible to connect a USB hub and have two disks hooked up to the Airport Extreme?
Thanks for helping. I am constantly in awe of all the help people like you give people like me. Thanks!!!
Jakob

I've gone through the manual setup and the assisted setup and can't seem to get my MacBook to use the Time Machine. Any thoughts or help would be greatly appreciated.
Well, as the Jolly Giant points out....+this type of configuration is not supported by Apple+, so it's difficult, if not impossible, to provide a fix for something that Apple says that you cannot do. Reference these Apple Support documents regarding this topic:
http://support.apple.com/kb/HT2038
http://docs.info.apple.com/article.html?path=Mac/10.6/en/15139.html
Your situation is not unlike other users who try this and find that one computer may backup...(usually for a limited time before corruption issues start to creep in)...but another computer cannot backup. Count me as one of those users who thought that because things seemed to work that I had somehow "beat the system".
I started getting the corruption error messages after 4-5 weeks of successful backups, so I figured that it did not make sense to continue to try to get a second computer to backup (yes, I too could not setup a second Mac to backup).
Sorry, I could not get a second machine to backup, so can't tell you how to accomplish that goal. If you want to continue to try backing up this way, you might want to also think about a second backup strategy...just in case backups become corrupted on the WD drive.
Maybe if Apple says you cannot do this, they just may be right?
Message was edited by: Bob Timmons

I need to configure a new hard disk as backup disk for time machine. The set up program is running and it says it will take 9 days to backup about 56 GB. Is it normal ?

I need to configure a new hard disk as backup disk for time machine.
The set up program is running since two hours and it says it will take 9 days to backup about 56 GB.
Is it normal ?

Roberto 17 wrote:
I started this morning at 12 and after 5 hours now the backup is about 6 GB up on 56 GB.
The new HD is a WD My Passport Edge 500 GB capacity
5 hours to do 6 GB of transfer is NOT normal, even for USB 2.0 so there's something wrong here. I'd say cancel it, wipe the drive and then test the integrity of the drive. Do some file transfers over to and see if it's behaving normally. It could be a bad USB cable, it could be a bad drive or bad enclosure. As it's new, I suspect you haven't really put it through its paces yet and it's important to do that first before commissioning it to serve as your "reliable backup."

External hard disk for Time Machine

I'm considering baking up my iMac. I have a Lacie external hard disk with a Master Boot Record partition type. On it, there are already some data files from both Windows and Mac machines.
I understand that, for Time Machine to work, the partition type needs to be changed to GUID (for Intel based Mac). Obviously, I will need to copy these data files to somewhere, then use Disk Utility to change the partition type, partition the hard disk (one partition to be used for Time Machine back-up).
My question is, will it be safe to copy the data files (previously from Windows and Mac machines) back to another partition of the hard disk which will then has a GUID partition type? Will the files (including those from Windows machines) be usable?

KenWong wrote:
I'm considering baking up my iMac. I have a Lacie external hard disk with a Master Boot Record partition type. On it, there are already some data files from both Windows and Mac machines.
I understand that, for Time Machine to work, the partition type needs to be changed to GUID (for Intel based Mac). Obviously, I will need to copy these data files to somewhere, then use Disk Utility to change the partition type, partition the hard disk (one partition to be used for Time Machine back-up).
My question is, will it be safe to copy the data files (previously from Windows and Mac machines) back to another partition of the hard disk which will then has a GUID partition type? Will the files (including those from Windows machines) be usable?
You're slightly mixing terminology.
The *+Partition Map Scheme+* applies to the whole disk, whether it has one or multiple partitions. That's what needs to be GUID or +Apple Partition Map+.
The Format applies to each partition, and may be different for each one. Your TM partition needs to be +Mac OS Extended (Journaled),+ the other one can be +MS-DOS (FAT)+ for use with Windoze.
You can copy those files anywhere temporarily, while re-formattng the disk. It doesn't have to be a separate partition. It could even be CDs/DVDs. As long as you can copy and read back, it doesn't matter. If you put them on your boot drive, Windoze won't be able to read them while they're there, but once you get them back on a +MS-DOS (FAT)+ partition, it will.
See the instructions in item #5 of the Frequently Asked Questions *User Tip* at the top of this forum.
We usually recommend putting the Time Machine partition first (at the top of the diagram that Disk Utility will show you), so you can more easily expand or contract it later on, if you need to.

HT201250 Is it possible to use Dropbox or Microsoft OneDrive as the backup disk for time machine?

I have a MacBook Pro for which I have not set up Time Machine. I have a Dropbox account and a Microsoft OneDrive account, each with plenty of space to serve as backups. Is it possible to use either of these as THE backup disk for Time Machine? It doesn't appear intuitive from Time Machine on my MBP.
Thank you.

No. Time Machine does not work with "cloud" drives.

If I choose a hard drive ask my backup disk for time machine, will it clear out the data that was previously stored in my hard drive?

If I choose a hard drive ask my backup disk for time machine, will it clear out the data that was previously stored in my hard drive?

Hello edjhsu,
Unless the drive is in a format that isn't compatible with Time Machine, the files will not be overrwitten. However it is typically a better idea to keep your files and your backup separate, especially since files on the Time Machine drive will not be backed up by Time Machine.
Mac Basics: Time Machine backs up your Mac
http://support.apple.com/kb/HT1427
Cheers,
Allen

Freeze login window when connected disk for Time-Machine

MacBook, 13-inch, Early 2008, Lion 10.7.3 (same problem on 10.7, 10.7.2)
- Freeze login window when connected disk for Time-Machine.
In logs I can see they Time-Machine finished work successfully.
I have do hardware reset every time to login my laptop.

wongkh wrote:
If connecting the time machine after windows is up,both windows and the time machine works properly.
i can access the time machine hdd in windows.
Don't, Time Machine knows nothing about Windows, and vice versa.

How do I move data on time machine from one external hard drive to another

How do I move data on time machine from one external hard drive to another?

Although the documentation says you can copy Time Machine backups in the Finder, it's very slow and sometimes doesn't work at all.
Launch Disk Utility, open the built-in help, and search for the term "Duplicate." Follow the instructions. Turn Time Machine OFF in its preference pane while copying the volume.

Time Machine couldn't complete the backup to "Time Machine Backups". The backup disk is not available.

I have received an error message today - Time Machine couldn't complete the backup to "Time Machine Backups". The backup disk is not available.
I am using a WD 1.5tb Help!!! Everything is on there and the files are not showing. The WD SmartWare icon is on the Desktop but the Time Machine icon is not. When I save a file I open the Time Machine file and save it in there. What do I do? How do I get my files back?? I do not keep anything on the macbook pro. Help PLEASE!!!

Hi Yaann,
Thank you for your reply. Yes I did try that, but no luck.
After several hours of calls to a very unhelpful WD and further calls to Applecare, there was nothing anyone could do. Out of frustration when holding the WD 1.5TB hard drive, I smacked it (NOT recommended). Well, to my surprise the WD reappeared on my devices list. Let me tell you, I pulled my files off as fast as I could on to my MacBook Pro. I breathed a huge sigh of relief when I confirmed that everything transferred back to the MacBook Pro fine. I spoke with the Applecare tech and he talked me through the set up on a new Lacie hard drive.
What I can say is that after further research into external hard drives and now personal experience - Lacie is the top of the line and you get what you pay for. I would NEVER ever recommend a WD to anyone. Given one, I would still through it away.
I was LUCKY.
I must say the support and understanding I received from Applecare was outstanding!! I would never own a apple product without applecare and from long term experience it is worth every penny.
All the best,

HT3275 Can some HELP, I keep getting this error with my Time Machine Back up, "The backup disk image "/Volumes/JKPN Safe/JKPN IMAC.sparsebundle" is already in use.

Can some one HELP me , I keep getting this error with my Time Machine Back up, "The backup disk image “/Volumes/JKPN Safe/JKPN IMAC.sparsebundle” is already in use.

See > http://pondini.org/TM/C12.html

Time Machine Backup error - The backup disk image "/Volumes/Data/Extreme.sparsebundle" could not be accessed (error -1).

I am getting a Time Machine backup error "The backup disk image “/Volumes/Data/Extreme.sparsebundle” could not be accessed (error -1)."
Then a Finder window pops up with the backup directory in it. When I open it I see all the backups that were completed successfully and then the one there is simply always shows the data and .inProgress. I thought that maybe if I could delete the one that is perpetually in progress it would start a new one and run fine, but I won't let me delete it.

Reboot the TC.. or go to the 5.6 utility.. and disconnect all users.. to force it to reconnect.
C17 in troubleshooting.. to give more specifics to Kappy's comment.
http://pondini.org/TM/Troubleshooting.html

HT1578 I have found that I can't access the contents of the encrypted disk in time machine backups. The Finder window displays a grayed-out icon representing the disk. Can this be remedied?

I have found that I can't access the contents of the encrypted disk in time machine backups. The Finder window displays a grayed-out icon representing the disk. Can this be remedied?

Time Machine error: Apple Support Communities
OSStatus 5 when trying to use Lion...: Apple Support Communities

How large should a disk for time machine be vs the hard disk

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