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A comment on Things Unix can do atomically (2010). Parent comment

Re:Things Unix can do atomically (2010) by x4132 on Friday February 06, 2026 @03:05AM (#46910288)
not surprised about the chrome part, but pretty shocked at the phone OS part. I know APFS migration was done in this way, but wouldn't storage considerations for this be massive?
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Re:Things Unix can do atomically (2010) by marmarama on Friday February 06, 2026 @04:01AM (#46910601)
Not really, because only the OS core is swapped in this way. Apps and data live in their own partitions/subvolumes, which are mutable and shared between OS versions.

The OS core is deployed as a single unit and is a few GB in size, pretty small when internal storage is into the hundreds of GB.

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Re:Things Unix can do atomically (2010) by slopusila on Friday February 06, 2026 @03:24AM (#46910402)
what would be more massive would be phones not booting up because of a botched update. this way you can just switch back to the old partition
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