Some duplicate deleters (including DoubleKiller) could go one better: they could replace duplicate files with pointers. Deduplication could mean just deleting duplicate files. Maximum compression was therefore a good idea.ĭeduplication could help with that. I didn’t want to have to burn any more of them than necessary. But if an electromagnetic pulse or malware ever managed to corrupt my hard disk drives (HDDs), these written-in-stone discs would be as close as I could come to a failsafe backup (unless I stored one of those HDDs in a Faraday box).īD-Rs didn’t hold a lot, and they were slow to write and slow to read. The mission at hand was to burn a fail-safe copy onto Blu-ray (BD-R) optical discs. I already had backup drives containing copies of those assorted system and drive backups. xz) backups of bootable Windows and Ubuntu USB drives. I also had a bunch of Windows and Ubuntu virtual machines (VMs, including either VirtualBox VDIs or VMware VMDKs) backed up in WinRAR’s RAR format. I had a bunch of Windows (XP, 7, 10) drive images in AOMEI’s ADI format. Nonetheless, I welcome suggestions that may help to resolve the problem and advance the project. At the moment, I was unfortunately out of time for further efforts along these lines. As indicated below, the effort stalled at the point of restoring the Windows images from Borg backup to bootable form. This post describes an effort to use Borg to shrink a set of Windows and Ubuntu drive backup images to a very small archive.
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