Seemed to result in no changes Janes-MacBook-Pro:~ John$ diskutil verifyDisk /dev/disk4 Started file system verification on disk4įinished file system verification on disk4 Same result for all /dev/disk* attempts Janes-MacBook-Pro:~ John$ diskutil verifyVolume disk4 Janes-MacBook-Pro:~ John$ diskutil apfs unlockVolume /dev/disk4 Janes-MacBook-Pro:~ John$ sudo gpt show disk4 Janes-MacBook-Pro:~ John$ sudo gpt show disk3s2 Janes-MacBook-Pro:~ John$ sudo gpt show disk3s1 Meanwhile assuming we are not actually mounting. I ran the below gpt commands, unmounted disk 4, and ran them again and checked Disk Utility/finder for any changes. Nothing additional seemed listed or mounted anywhere. If that actually did something I am not aware. Janes-MacBook-Pro:Documents John$ diskutil mountDisk disk4 Janes-MacBook-Pro:~ John$ distill mountDisk /dev/disk3s2 Janes-MacBook-Pro:~ John$ diskutil apfs list Janes-MacBook-Pro:~ John$ diskutil listĢ: Apple_APFS Container disk4 500.1 GB disk3s2 I am trimming out references to the other system drives for easy of reviewing. I think I have exhausted my Disk Utility GUI options so now it is off to the command line! This will all be on the cloned drive. Hangs and very briefly it appears on the left showing the following then it immediately disappearsĬlick Mount on disk3s2 and nothing happens, no feedbackįile->Get Info on disk3s2 Volume type : APFS Physical Storeįile->Get Info on AppleAPFSMedia Volume type : Uninitializedĭisk Utility First Aid Results Running First Aid on “AppleAPFSMedia” (disk4) I am comfortable at a command line, but I am not a mac user. Unfortunately, not being a mac guy, I am hitting some walls, probably caused by my own ignorance of the underlying system and available commands. Have a backup of the dmg just in case.įeeling a new level of confidence that I won't fry the last hope we have of getting this data back by hammering it with attempts, it's time to jump on my wife's Macbook Pro and see what we can see. No bad sectors or errors on both, a quick look at the image in a hex editor and yep, stuff is in there alright. Sudo ddrescue -d -f -r3 -c 4096 /dev/sdc /dev/sdb mapfile.txt Sudo ddrescue -d -f -r3 -c 4096 /dev/sdc "/media/spaceguns/TOSHIBA EXT/RescueImage1.dmg" "/media/spaceguns/TOSHIBA EXT/mapfile1.txt" For anyone else going through this with a drive that keeps dropping connection, try a powered USB hub.ĭdrescue commands used sudo ddrescue -f -n -c 4096 /dev/sdc "/media/spaceguns/TOSHIBA EXT/RescueImage1.dmg" "/media/spaceguns/TOSHIBA EXT/mapfile1.txt" I manage to capture a seemingly 100% good 500GB disk image, and mirror to a 2TB external drive, directly off the bad drive in the enclosure on an Ubuntu system using ddrescue. I take pity on them and have taken this on as a side project, believe this is an encrypted APFS drive. Bottom line, the usual boot off of it on a different mac, etc troubleshooting isn't working. Drive Savers tries to hook it into a system (?), says it isn't working, sends them on their way within 15 minutes or so. They stress how important some of their research data is, I refer them to Drive Savers out of an abundance of caution. Friend's university tech shop takes a look with no luck. Report that part of the SSD that managed FileVault is probably damaged. Genius Bar may or may not have run some commands to try and recover things. The drive would not successfully boot into any macs at the Apple store. Friend's 2015 Macbook Air stopped turning on. The set up, steps taken and how we got this far: They have a several months old timemachine backup available so if there may be something useful there like a partition table or encryption key I need I may be able to get access to it. No recent backups, important data, and I have already put the fear of god into them regarding backups so this doesn't happen again. I only have partial information, and do not 100% know the exact OSx version or how full the drive was, but I think it was pretty topped out.
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