I want to convert an existing Time Machine backup (on an external HDD, encrypted) to a read-only archival image.
I open Disk Utility and choose File » New Image » Image from Backup, which lets me choose the destination. The destination is an ExFAT file system.
The options are the default (read-only, unencrypted), and when I start the process, after a few seconds, I get this:
I haven't cancelled the operation myself — Disk Utility did it. What I've tried so far:
- Choosing another output option (compressed or CD/DVD master, for example), but that didn't help.
- Unmounting the volume before starting the process
- Time Machine is off; no automatic backups are being created.
- Copying the
Backups.backupdbfolder is impossible because it contains hard links that ExFAT cannot read, and Finder says "The volume is the wrong format for a backup."
The same problem has been discussed here without a resolution. What I do notice is that the partition is shown as a Time Machine disk. Could this cause any problems?