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Lawrence D'Oliveiro <ldo@nz.invalid> wrote:Always keep a copy of the files on the first partition of the SD card. They (copies) don't need to be on a FAT filesystem. Better even cross-copy the boot files to another machine (rsync?).On 08 Jun 2025 10:18:05 +0100 (BST), Theo wrote:I've had times where it's the FAT partition that's been corrupted, which has
>... but the filesystem is broken. Which is to be expected if>
it wasn't properly unmounted, but for some reason the automatic
fsck-and-reboot mechanism in PiOS doesn't seem to work.
There isn’t actually a need to do an fsck normally. If you were using ext4
(or even ext3), that includes a journal. On reboot, you should see a
message “replaying journal”, after which the filesystem should be back to
a consistent state. This should be very quick, much quicker than a
filesystem integrity check.
resulted in a boot failure. I can't say for sure (because they're usually
headless and I can't SSH in to check anything) but I suspect this is
potentially a reliability problem - bad FAT partition means never booting as
far as being able to run anything.
Theo
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