How to repair a snapshot with an error when it’s one of your backups on a hard disk? Currently this seems impossible, putting all those backups at risk.
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Don’t waste time trying to discover which files are still open when you want to check or repair an APFS disk and Disk Utility throws an error. Here’s the solution.
When your backups are stored on hard disks, even though they may use APFS, it’s important to check they’re sound. How to do better than Disk Utility.
M1 Macs are different, as they always start booting from their internal SSD. Basic configurations are simple, reliable with well-established disaster recovery methods.
A full Time Machine backup over SMB analysed in detail. This reveals that some of the measures reported in the log are likely to be inaccurate and misleading, and gives suggestions for improving performance.
Complete slides analysing the history of Time Machine from first release to backing up to APFS in Big Sur, with detailed diagrams.
Tackles decisions and problems, including whether to use APFS in the backup sparsebundle, AFP or SMB, and configuration.
Can you migrate your old backups from HFS+ to APFS format? What can slow your backups down? Can you still use AFP, and what about restoring the system?
Links to my presentation, and to a selection of useful articles about Time Machine backups to APFS, and more.
From Apple’s basic Backup to your iDisk, through the first version of Time Machine in 2007, to Time Machine to APFS in Big Sur.
The Eclectic Light Company 