11 Replies Latest reply: Nov 15, 2010 9:08 PM by bassµnkie
makwarren Level 1 Level 1 (0 points)
I have partitioned my MacBook Pro5,1 for a year when I thought I still need to use Windows-run software. Now, I am regretting the partitioning and wondering if I could un-install the partition get rid of the Windows OS. Also, I wonder if this would help in speeding up the general operation in Mac OS, many thanks!

MacBook Pro 2.4GHz, Mac OS X (10.5.1)
  • 1. Re: Uninstall Partition in MacBook Pro
    Fortuny Level 7 Level 7 (21,415 points)
    Hi,

    the best way to completely remove your Windows partition and assign the diskspace back to your OSX is to use the BootCamp Assistant again which should give you the option to remove the made Windows partition and revert back to one OSX volume.
    After that's done a reboot of your Mac might be advisable.

    Only if that's not working (whatever the reason) :

    1) boot your Mac from your OSX 10.5 install DVD
    2) choose your language and then 'ignore' (cancel) the installation
    3) from the Top Menu (Utilities) start Disk Utility (DU)
    4) in DU click on your harddisk (not any partition) in the left pane (the first item listed)
    5) in the right pane use the 'Partition'-Tab
    6) click to highlight on the ex-Windows partition you want to delete
    7) click on the small '-' Button at the bottom

    That should delete your former Windows partition

    After that's done successfully

    8) Drag the partition separator line until it encompasses the entire drive and then select apply.
    9) Quit Disk Utility
    10) reboot your Mac from your harddisk.

    Since you are 'fumbling' with your OSX partition you should consider having/making a backup of it before trying the a.m. procedure. Just in case.

    Removing the Windows partition and reasigning the diskspace to your OSX partition can speed-up your OSX if you are low on free diskspace in OSX.

    Regards

    Stefan
  • 2. Re: Uninstall Partition in MacBook Pro
    makwarren Level 1 Level 1 (0 points)
    Thanks Stefan! will try your suggestions this weekend and let you know! Many thanks!
  • 3. Re: Uninstall Partition in MacBook Pro
    makwarren Level 1 Level 1 (0 points)
    spot on, great!
  • 4. Re: Uninstall Partition in MacBook Pro
    wstgermaine Level 1 Level 1 (0 points)
    I have the same issue as above yet I tried these steps as cannot see the partition in bootcamp or in disk utilities to remove it. I am quite sure it is still there as I can still open windows.

    If it makes a difference I don't boot into windows I open it in VM fusion.

    I was about to reinstall osx, but when asked to pick a hard drive to install on my drive only shows 150 gigs instead of the 200 gigs it should be.

    If I do a clean install will it clear off the entire 200 gigs or just the 150 it thinks it has?

    Thanks!
  • 5. Re: Uninstall Partition in MacBook Pro
    wstgermaine Level 1 Level 1 (0 points)
    Well, I just got done doing a clean install and it did not remove the partition.

    Does anyone have any ideas of how to remove this partition?
  • 6. Re: Uninstall Partition in MacBook Pro
    tjk Level 7 Level 7 (24,150 points)
    wstgermaine wrote:
    Well, I just got done doing a clean install and it did not remove the partition.

    Does anyone have any ideas of how to remove this partition?


    Hi w, and welcome to Apple Discussions.

    Just to be clear, the following will wipe the HD clean, nothing left, and you'll have to install everything:

    1. Boot from install disc (press power button, immediately insert install disc and hold down c key).
    2. Select your language.
    3. Open Disk Utility from Utilities menu.
    4. Select the HD in the left pane (the manufacturer’s name and the HD model number).
    5. Click on the Erase tab.
    6. Choose the Format: Mac OS Extended (Journaled).
    NOTE: if you want to zero the HD (which I always think is a good idea, but does take time), click on Security Options, click the button for Zero Out Data, click OK. The larger the HD, the longer this will take, in some cases several hours.
    7. Click on Erase and wait for the entire process to finish.
    8. Click the Partition tab.
    9. Click on Volume Scheme: and choose the number of partitions (normally just one unless you have other plans).
    10. Click on the Options button (located underneath the Volume Scheme pane) and select GUID.
    11. Click Apply.
    12. Quit Disk Utility and continue with the installation process to install OSX; when finished, repair permissions, run updates, repair permissions.
  • 7. Re: Uninstall Partition in MacBook Pro
    wstgermaine Level 1 Level 1 (0 points)
    Hello, its good to be here.

    So I did the erase hard drive procedure you laid out, but it only erased the 150 gigs of the mac partition and still is not showing the total 200 gigs that its should be. I am reinstalling osx right now but I don't think it will make a difference at this point.

    Any other ideas on what might get rid of this partition?

    Thanks,

    Will
  • 8. Re: Uninstall Partition in MacBook Pro
    tjk Level 7 Level 7 (24,150 points)
    wstgermaine wrote:
    So I did the erase hard drive procedure you laid out, but it only erased the 150 gigs of the mac partition and still is not showing the total 200 gigs that its should be.


    Did you select the manufacturer’s name and the HD model number in step 4, usually the top item in the list?

    Any other ideas on what might get rid of this partition?


    Is it formatted NTFS?

    Message was edited by: tjk
  • 9. Re: Uninstall Partition in MacBook Pro
    wstgermaine Level 1 Level 1 (0 points)
    I did choose the manufacturers name and HD model that was the top choice on the list. Im not sure about NTSF format but when I erased in I followed step 6, "Choose the Format: Mac OS Extended (Journaled)."
  • 10. Re: Uninstall Partition in MacBook Pro
    tjk Level 7 Level 7 (24,150 points)
    wstgermaine wrote:
    Im not sure about NTSF format


    The reason I ask is because Mac cannot write to NTFS formatted discs without third party software help. I have never tried formatting over a disk with an NTFS partition, so I do not know if that could be the issue (that it was formatted NTFS prior to your trying to reformat it). If someone knows if this may be, or is not, the issue, please let us know.

    Message was edited by: tjk
  • 11. Re: Uninstall Partition in MacBook Pro
    bassµnkie Level 1 Level 1 (0 points)
    2 Problems:

    1: Every time I try to boot from my install dvd, the computer boots until the chimes, then goes black, then boots again until the chimes, goes black, then repeats. over and over again. Every time I hold down the c key to try and manually do stuff, it doesnt do anything. in order to get back to my useable os i have to hold option and select the hard drive.


    2: I'm trying to delete some partitions using the startup disk because disk utility wont do it. Keeps giving me error messages. i have 2 other partitions and this is what they say when i try to erase them in disk utility:
    1st partition says :
    Could not mount (on a partition that can't be verified because of an "unrecognized filesystem"

    2nd partition says:
    "Volume Erase failed with the error:
    Could not unmount disk."

    So any fixes to the above would be greatly appreciated.