Merging 2 Partitions on a Leopard Drive...?

Discussion in 'macOS' started by fab5freddy, May 26, 2008.

  1. fab5freddy macrumors 65816

    fab5freddy

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    #1
    I am running Leopard 10.5.2
    and i have partioned my drive into 2 halves,
    1 being 95 GB and the other 95 GB...

    I have already installed many apps on the 1 drive,
    but i would like to Merge the 2 partitions back to 1 - 200 GB drive....

    Is this possible to Merge them back to 1 drive without Re InStalling Everything...?

    THANKS!!
     
  2. fab5freddy thread starter macrumors 65816

    fab5freddy

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    #2
    no answers yet ?

    i guess the OS X geniuses are out in the sun right now......?
     
  3. Qwest905 macrumors 6502

    Qwest905

    Joined:
    Sep 12, 2007
    #3
    i'm not sure if u have to reinstall everything

    but i knwo you can merge the 2 disks together using disk utility

    come to think of it if your second drive is empty then u won't have to reinstal things back
     
  4. fab5freddy thread starter macrumors 65816

    fab5freddy

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    #4
    yeah, my 2nd drive is empty.

    again, i am running Leopard 10.5.2
     
  5. chas0001 macrumors 6502a

    chas0001

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    #5
    To restore back to a single partition you will need to BACKUP FIRST! then boot from the OS X installation DVD and go into disk utility. Highlight the hard drive (not the partition) and click on the partition tab. Highlight the partition you want to remove and click on the - (minus) button. It should warn you that the second partition will be removed and the first will remain intact (if it does not warn you then do NOT proceed). Now drag the bottom right hand corner of the first partition until it takes up all of the remaining space and click apply.
     
  6. Qwest905 macrumors 6502

    Qwest905

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    #6
    you don't need to boot up(correct me if i am wrong)

    you can just run disk utility and then do the rest what you said
     
  7. chas0001 macrumors 6502a

    chas0001

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    #7
    A far as I know, you will not be able to change the partition table on a disk that you have booted from, that is why you need to either boot from the Install DVD or from a completely different disk.
     
  8. fab5freddy thread starter macrumors 65816

    fab5freddy

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    #8
    interesting ;- )

    Are there any MAC OS X Experts out there
    that can confirm these conflicting opinions ...?

    thanks!
     
  9. Qwest905 macrumors 6502

    Qwest905

    Joined:
    Sep 12, 2007
    #9
    i just tried it myself without actually doing it

    this is what i get

    this is without even using the install disk..just using disk utility

    [​IMG]

    so seems like u don't have to backup everything..and start off with the installation disk to do this
     
  10. Switz213 macrumors 6502

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    May 26, 2008
    #10
    I'm pretty sure you just can't boot up on the specific partition, but you may on the other. Just speculation, not 100% sure.
     
  11. chas0001 macrumors 6502a

    chas0001

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    #11
    Ok. I stand corrected, this type of partition modification does not require you to boot from the Install DVD. I just tried this on an external hard drive that I had laying around with identical partitions as you have and it worked fine.

    That message you are getting is correct. It is stating that your 'Second Drive' partition will be removed (you stated it was empty so thats ok) while the 'Main Drive' will remain intact. Once this is done you can then resize the main partition and click Apply.

    I would always recommend that you backup the 'Main Drive'. Again, its entirely up to you.
     
  12. LouisBlack macrumors 6502

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    #12
    While disk utility will allow you to modify the partition map of a drive you have booted from, it is not recommended.

    I would suggest that you boot from the Leopard DVD and definitely back up all of your data before performing any partition modification. One slight cock-up and all of your data could become unreadable - is it really worth it to save 5 minutes?
     
  13. chas0001 macrumors 6502a

    chas0001

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    #13
    Hear hear....:D
     
  14. fab5freddy thread starter macrumors 65816

    fab5freddy

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    #14
    But When Using the Install Leopard DVD,
    can i keep all the installed apps on the main drive ?

    Or do i have to re-install from scratch ?
     
  15. fab5freddy thread starter macrumors 65816

    fab5freddy

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    #15
    for those of you interested, i just merged the 2 partitions seamlessly
    without the install disk whatsoever...

    i just erased the 2nd empty partition...
    and clicked on apply to merge the 2 partitions!
     
  16. Qwest905 macrumors 6502

    Qwest905

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    #16
    glad it worked out for you that way

    but like everyone said it's always good to have a back up...just for the "just in case" type of situations
     
  17. sozekizer macrumors member

    Joined:
    Nov 17, 2007
    #17
    having problems here:
    i had an 80 GB drive with 2 partitions
    9: Apple_HFS Tiger 1 37.4 Gi disk0s10
    10 Apple_HFS Leopard 37.0 Gi disk0s11

    I blew away the Tiger Partition and reformatted as Extended Journaled (same as the leopard partition) and later decided i wanted just a single volume instead of the two partitions.
    I’ve tried multiple options
    1. disk utility: won’t increase to a larger size since leopard is on the second and not the first partition — see the disk list above
    [​IMG]
    2. diskutil mergePartitions “Journaled HFS+” New disk0s10 disk0s11 Merging partitions into a new partition Start partition: disk0s10 Untitled 1 Finish partition: disk0s11 Leopard Cannot resize volume with a wrapper: /Volumes/Untitled 1 Merging partitions encountered error Invalid request (-9998) on disk disk0s10 Untitled 1. The erase will not occur.
    [​IMG]
    3. repartitioned and reformatted the former tiger partition as jounaled extended.
    4. tried the resize function again and got this: diskutil resizeVolume disk0s11 75G Started resizing on disk disk0s11 Leopard Verifying [ \ 0%…………………………………………… ] Resizing encountered error on disk disk0s11 Leopard: Unrecognized filesystem (-9958)
    [​IMG]

    both partitions are the same filesystem so i’m confused as to why that error would show. If there's a way to rearrange the partitions so that the Leopard Partition is #1 I'm open to suggestions. Any other help anyone can provide would be helpful. I'm trying to avoid having to reinstall everything.


    thanks in advance for the help.
     

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  18. sickmacdoc macrumors 68020

    sickmacdoc

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    #18
    To sozekizer-

    I believe the partition to be saved/used after ANY repartitioning/resizing needs to the the first partition on the disk.

    Normally I would say that the answer lies in just using Carbon Copy Cloner or SuperDuper to clone your Leopard partition contents to the first partition, but I also do not think that the OS will offer you the chance to boot to a particular partition if they are both the same version of the OS. In that case, the Leopard partition needs to be cloned to another drive, be that internal or external and the machine rebooted to that. Then you can simply erase the first drive/ repartition to a single partition and then clone the information back onto it- then boot from it as if nothing had happened. :)
     

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