A colleague at work has a Kingston 240GB SSD drive which has come out of a now dead computer. We want to be able to recover some data from it (no backups sadly) however the drive won’t mount properly.
I am using an Anker USB3 external HDD enclosure which I know to be working correctly. The drive has come from an Apple computer, and we are attempting recovery on another MacBook Pro.
The drive appears under DiskUtility, however is greyed out. Trying to click
mount does nothing. FirstAid also fails.
What Have We Tried?
So far, we’ve run
diskutil repairVolume disk2s2 which gave the following output:
Repairing file system Volume is already unmounted Performing fsck_hfs -fy -x /dev/rdisk2s2 Checking Journaled HFS Plus volume Invalid record count Checking extents overflow file Invalid record count The volume could not be verified completely File system check exit code is 8 Restoring the original state found as unmounted Error: -69845: File system verify or repair failed Underlying error: 8: Exec format error
We have also run
sudo /sbin/fsck_hfs -yprd /dev/disk2s2 which returned:
/dev/rdisk2s2: starting journal_replay(/dev/disk2s2) returned 0 Using cacheBlockSize=32K cacheTotalBlock=65536 cacheSize=2097152K. Executing fsck_hfs (version hfs-407.50.6). ** Checking Journaled HFS Plus volume. hfs_swap_BTNode: invalid forward link (0xFFFFFFFF) hfs_swap_BTNode: invalid backward link (0xFFFFFFFF) hfs_swap_BTNode: invalid node height (255) hfs_swap_BTNode: invalid record count (0xFFFF) Invalid record count (4, 25511) ...repeats similar output... Node 35746's back link is 0x0; expected 0x8c17 disk offset = 0x78f41000, size = 0x2000 Invalid sibling link (4, 35746) Node 35746's forward link is 0x0; expected 0x6489 disk offset = 0x78f41000, size = 0x2000 Invalid node height (4, 35746) Index key doesn't match first node key Invalid index key (4, 35746) ** The volume could not be verified completely. volume check failed with error 7 volume type is pure HFS+ primary MDB is at block 0 0x00 alternate MDB is at block 0 0x00 primary VHB is at block 2 0x02 alternate VHB is at block 467182910 0x1bd8a53e sector size = 512 0x200 VolumeObject flags = 0x07 total sectors for volume = 467182912 0x1bd8a540 total sectors for embedded volume = 0 0x00 CheckForClean - could not get VHB/MDB at block 467182910 CheckHFS returned -1317, fsmodified = 1
I am hopeful that with the drive being recognised, the data is still recoverable. Before looking at paid software such as DiskWarrior, is there anything else that I can try so that I can access the disk or to repair this
record count problem.
You can try some of these for free. They will report back what they find and you pay to recover the files.
“Stellar Phoenix Macintosh – Mac data recovery software, recovers data from damaged, deleted, or corrupted volumes and even from initialized disks.”
They have a trial version, so I guess you can see if your data can be recovered…
“Data Rescue II is the best data recovery software on the market for recovering files from a problem hard drive. Data Rescue II works when other tools fail. Data Rescue II is also completely safe to use since it does not attempt any risky repairs to the drive while its scanning.”
FileSalvage is an extremely powerful Macintosh application for exploring and recovering deleted files from a drive or volume. FileSalvage is designed to restore files that have:
— been accidentally deleted.
— become unreadable due to media faults.
— been stored on a drive before it was re-initialized/formatted.
Wondershare Data Recovery for Mac
“Recover lost photos, video, documents, email and archive files from any Mac-based hard drive or external hard drive, iPod, USB drive, SD card, digital camera, mobile phone, and MP3/MP4 player, due to accidental deleting, formatting, virus infection, improper operation, unexpected power failure, and other unknown reasons. Also, iPhone recovery allows you to recover lost photos, videos, SMS, contacts, note, calendar and call history from iTunes backup file. With the free trial, you can preview all your recovered images, videos, music, documents and archive files prior purchasing this Mac Data Recovery.”
“If there is any chance of recovery at all your best bet is Prosoft Data Recovery.” by macjack
Try copying the disk byte by byte and then recover it. It’s not a good idea to write into the disk (e.g. repair it) as it might have been damaged. It’s a good idea to minimize its read, and scan though the backup using various softwares instead.
You may do that through payware like Disk Drill (which can then scan the whole backup image for files) or simply using a copy tool like dd.
You may run “man dd” to learn more and customize your usage, or copy your disk to your folder by running “dd if=/dev/disk2 of=/path/to/your/folder”.
When you are finished, simply rename the file to .dmg and attach it. If it successfully mounted, copy your files to a new drive. If it doesn’t, try the following command: “hdiutil attch -nomount /path/to/dmg/file” and then “fsck_hfs -dfy /dev/diskXsX” (replace XsX with what hdiutil give you).