[Lazarus] Using Lazarus on Embedded Linux?
mschnell at lumino.de
Wed Sep 29 12:09:28 CEST 2010
On 09/28/2010 11:27 AM, Mark Morgan Lloyd wr
> The bottom line is that when a system gets a powerfail signal it will
> unmount all filesystems and shut down. But the action of unmounting
> rewrites (something equivalent to) the superblock to reset the dirty
> flag, and that requires that power remains stable.
Yes. This is why unmounting might make the system even less safe. If
some data is not written back at all only those are bad. But it you
unmount and thus rewrite the superblock immediately before power down
the card might trash more and more important data.
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