Research the links so that you understand what to do. Important to have a safe TM backup, the more recent the better. It worked for me, but I obviously cannot be responsible if it doesn't work for you, or worse happens. I fo not want to wipe my hard drive, as my last backup was some time ago.Īny suggestions would be much appreciated.īelow are the notes that I made to resolve the problem. Various checks are then listed, followed by the message “The volume MackintoshHD appears to be OK”, “File system check exit code is 0”, “Restoring the original state found as mounted”, “Fixing size of logical volume to fill logical volume group”, “File system resize support required, such as HFS+ with Journaling enabled. Roll-back 1 commit checkpoint for stable state Unable to bootstrap transaction group 495933: incorrect block typeĬontinue scanning metadata for an older checkpoint In the log, which produced the above error message, the following were also listed (not an exhaustive list) “File system resize support required, such as HFS+ with Journaling enabled. The ran Disk Utility and received the following message, after running First Aid on Mackintosh HD On start up held Cmd + R key to go into macOS Utilities. Apple logo appeared, but progress bar on loading only went halfway across the screen, and then the mac would switch off.
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