I have been using Time Machine since its inception. For years, Time Machine caused my backup disks to be bootable. Very convenient for recovery operations.
Recently, I deployed two new Time Machine backup disks. Neither one of them became bootable. What gives?
Two system log messages generated by Time Machine:
2018-12-03 08:18:25.109094-0800 localhost backupd: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to attach '/Volumes/WD Elements 1/Backups.backupdb/.RecoverySets/0/com.apple.recovery.boot/BaseSystem.dmg', error: No such file or directory
I see that there are directories /1/ and /2/,but not /0/. Is this a Time Machine bug?
2018-12-03 07:37:41.017509-0800 localhost backupd: (TimeMachine) [com.apple.TimeMachine:TMLogError] Failed to write unlock record UUIDs as extended attribute for disk '/', error: Error Domain=NSPOSIXErrorDomain Code=1 "Operation not permitted"
I am concerned that my new backup disks got off to a bad start. Comments?