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Can I partition my external HDD into 2 HFS + NTFS? and use HFS+ partition for TimeMachine backup. I already lost my info once in this way, this is why I have to ask now, before doing some stupid things again. The NTFS partition is for Ubuntu and Windows machine from my office, at home I am using 10.6.8

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A word of advice: never use your backup HD for something else. HD are way cheaper than data loss. –  Gio Aug 5 '11 at 11:51
    
I know, but I already have an 1TB external drive, in my country, they are very expensive –  Denees Aug 5 '11 at 12:09
    
Yeah, Gio is right, don't use your backup drive for anything but backups. It will increase the likelihood of that drive crashing. –  daviesgeek Aug 5 '11 at 15:19
    
Well, thanks guys –  Denees Aug 5 '11 at 19:02
    
With Lion or greater, a JHFSX volume to which Time Machine backs up may be a sparse bundle disk image on an NTFS volume – Backup to NTFS … Restore from NTFS – where the device number of the JHFSX volume is higher than the number of the physical disk that is used for NTFS. In that way you can use Time Machine with NTFS alone on a single disk. As the question is specifically for two file systems on a single disk, my vote goes to David. –  Graham Perrin Jul 23 '12 at 4:34

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up vote 3 down vote accepted

Time Machine needs a mountable HFS+ partition; it couldn't care less how large that partition is relative to the overall size of the drive.

But I agree with Gio's comment; drives are cheap, so I'd suggest getting multiple drives.

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