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Use GParted LiveCD to recover missing partition Storage Devices
My Macintosh HD startup disk disappeared today, but I was able to use GParted to delete a small partition from the drive and the missing disk reappeared.

Boot Camp Assistant got me into this hot water when I was preparing to reinstall XP. I had partitioned my harddrive into one 276 GB Mac partition and one 5 GB Windows partition, but decided to delete the Windows partition and start over. This time I used BCA and set the size of the new partition to 16 GB.

When running the XP installer, I noticed I was only shown a single 'C:' partition as an option for the install location. The first time I installed XP, I remember seeing two partitions listed with 'Unpartitioned space' between them in the list. Something didn't seem right, so I exited the installer and rebooted, holding the option key for the boot menu.

I was shocked to discover that my 'Macintosh HD' startup disk was gone... only a 'Windows' disk was available (not the install CD). I booted from the Snow Leopard install DVD and ran Disk Utility. It showed no partitions at all on the drive, and the verify and repair options were grayed out.

Yes, I had a Time Machine backup to restore from, but before doing that I decided to try booting from a GParted LiveCD.

Unlike in Disk Utility, the drive did appear to be partitioned, and I saw my large HFS+ partition (unlabeled, though) and another small partition. Although I was unable to 'check/repair' either of them with GParted, I was able to delete the 16 GB partition. After that, the 'Macintosh HD' label reappeared, the check command ran without a hitch, and I was able to boot back into Snow Leopard, without any data loss to speak of.

This Apple Support discussion describes a similar experience. I wonder if others have run into trouble using BCA?

[crarko adds: I haven't tested this one. Keep those backups up-to-date, folks.]
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Use GParted LiveCD to recover missing partition
Authored by: locojohn on Jan 13, '11 08:21:58AM

I had the same issue. I read somewhere that Boot Camp Assistant can be used to delete the Windows partition and to restore the Mac OS X built-in HDD state to the single partition, however, Boot Camp Assistant refused to work.

I booted from the USB backup disk and used iPartition application to restore the Macintosh HD on the built-in HDD to it's maximum capacity. iPartition let me to delete the secondary 15 GB Boot Camp partition and then resize the primary Mac OS X Extended partition to occupy the whole disk space.


Andrejs



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Use GParted LiveCD to recover missing partition
Authored by: asmeurer on Jan 13, '11 04:46:04PM

What about booting into your Mac OS X system install disk and using Disk Utility to do the same thing?



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Use GParted LiveCD to recover missing partition
Authored by: leamanc on Jan 13, '11 07:23:53PM

Actually, that's the first thing the hint submitter thought of. I guess you glanced over this part:

I booted from the Snow Leopard install DVD and ran Disk Utility. It showed no partitions at all on the drive, and the verify and repair options were grayed out.

And this part later on:

Unlike in Disk Utility, the drive did appear to be partitioned [in GParted], and I saw my large HFS+ partition (unlabeled, though) and another small partition.


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Use GParted LiveCD to recover missing partition
Authored by: explodingwalrus on Jan 13, '11 05:24:33PM

I found Gparted equally useful awhile back when reclaiming hard drive space without repartioning/reformatting and without buying partitioning software :)

http://all-tech-thoughts.blogspot.com/2010/01/create-new-xfs-partition-in-empty-space.html



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