Can I resize my backup partition without deleting everything?

Discussion in 'OS X Mountain Lion (10.8)' started by Jardins de Vin, Jul 24, 2013.

  1. macrumors 6502a

    Jardins de Vin

    Joined:
    Nov 6, 2012
    Location:
    Europe
    #1
    I know that I can reformat the whole external drive and delete partitions and recreate them, etc. now my question is, if I’d like to simply change it’s size, will I loose everything that is on that drive? That’s one info I can’t seem to find anywhere… I don’t dare to try, however.

    I sadly found out that the partition that I created for time machine is too small. :(
     
  2. macrumors 65816

    Dalton63841

    Joined:
    Nov 27, 2010
    Location:
    SEMO, USA
    #2
    If the partition is in HFS+, then Disk Utility can resize it non-destructively.
     
  3. thread starter macrumors 6502a

    Jardins de Vin

    Joined:
    Nov 6, 2012
    Location:
    Europe
    #3
    What does that mean?

    Yeah I noticed that in disk utility it said that the selected partition will not be modified or something like this, but it confuses me. It obviously will be modified if I change it’s size, it just won’t be reformatted. Maybe that’s what they mean?
     
  4. macrumors P6

    Weaselboy

    Joined:
    Jan 23, 2005
    #4
    HFS+ is the Mac OS Extended option you see in Disk Util. The fact that you are using this disk for TM means it is already in this format, so you are fine.

    Just follow this to resize. All that message means is the partition you are resizing will not be erased.
     
  5. thread starter macrumors 6502a

    Jardins de Vin

    Joined:
    Nov 6, 2012
    Location:
    Europe
    #5
    I just checked the various partitions and drives (Macintosh HD and external hard drive) and it says the format is “Mac OS Extended (Journaled)” for all of them, I guess it’s the same and it should be fine then? :)

    I’ll follow that link you gave me, so it’s 100% sure that if I resize my partition everything will stay the way it was except that I’ll have more space on that partition, right? Also, I need to make the “Main” partition (rest of the external hard drive that I use to store other random stuff) smaller, this isn’t a problem is it?

    Cause I’ve read something about you being able to make them bigger but not smaller or something like this :confused:
     
  6. macrumors P6

    Weaselboy

    Joined:
    Jan 23, 2005
    #6
    Yep

    You can make the partition larger or smaller without losing data. When making it smaller of course you don't want to make it smaller than the amount of data on the partition. But no, just resizing does not wipe data.

    That said, it is always a good idea to backup just to be safe when tinkering around like this. :)
     
  7. thread starter macrumors 6502a

    Jardins de Vin

    Joined:
    Nov 6, 2012
    Location:
    Europe
    #7
    Alright, thanks! :)

    Well, that’s the problem: I can’t do a backup, my backup partition is too small! Kind of stupid, eh? :p
     

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