Thread: disk does not mount
05-07-2012, 11:16 AM #1
disk does not mount
- Member Since
- May 07, 2012
during the progress of backing up an external WD MyBook connected to a Windows Laptop running MacDrive the PC crashed leaving my disk unmountable.
The disk, 1TB in size with two partitons, doesn't mount on my mac. My mac is a very old PowerMac (still waiting for Apple to build a new MacPro )
I checked the disk with pdisk and testdisk (TestDisk Download - CGSecurity).
pdisk shows for my disk:
Partition map (with 512 byte blocks) on '/dev/rdisk3' #: type name length base ( size ) 1: Apple_partition_map Apple 63 @ 1 2: Apple_Free Extra 262144 @ 64 (128.0M) 3: Apple_HFS p1 1073741824 @ 262208 (512.0G) 4: Apple_Free Extra 879521136 @ 1074004032 (419.4G) Device block size=512, Number of Blocks=1953525168 (931.5G) DeviceType=0x0, DeviceId=0x0
Partition #3 is my lost HFS partition; #4 was used for a truecrypt volume of which I have a backup. Maybe there should be a driver somewhere in #2?
testdisks analyze shows:
Disk /dev/disk3 - 1000 GB / 931 GiB - CHS 1953525168 1 1 Current partition structure: Partition Start End Size in sectors 1 P partition_map 1 63 63 2 P Free 64 262207 262144 3 P HFS 262208 1074004031 1073741824 3 P HFS 262208 1074004031 1073741824 4 P Free 1074004032 1953525167 879521136
testdisk from menu "Advanced" (Partition table gets recognized as Mac. Fine):
Disk /dev/disk3 - 1000 GB / 931 GiB - CHS 1953525168 1 1 Partition Start End Size in sectors > 1 P partition_map 1 63 63 2 P Free 64 262207 262144 3 P HFS 262208 1074004031 1073741824 4 P Free 1074004032 1953525167 879521136
Selecting part#3, then superblock gives
Disk /dev/disk3 - 1000 GB / 931 GiB - CHS 1953525168 1 1 Partition Start End Size in sectors 3 P HFS 262208 1074004031 1073741824 Volume header Bad Backup volume header Bad Sectors are not identical.
I do not know how to proceed from here. Maybe someone can help me with this.
What might be the problem ist: there is no driver in parttion #2. If I could install one, maybe the Mac would recognize the disk? May be initialize the disk with diskutility (should be possible without overwriting any data, just the drivers and parttion map?!) and then run some disk rebuilding tool, eg DiskWarrior?)
Any help appreciated. Thank you in advance!
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