On Mon, Nov 20, 2023 at 11:27:45AM +0100, Thomas Schmitt wrote:

[...]
> to...@tuxteam.de wrote:

[...]

> > all blocks of the block device get overwritten,
> 
> Not all. Only as far as the new image reaches. That's how the GPT backup
> can survive (xorriso-dd-target would explicitely overwrite the last block
> by zeros).
> EFI firmwares are not known to react on GPT backups, although this cannot
> be ruled out completely.

Indeed, thanks for the correction :-)

Cheers
-- 
t "all generalizations suck"

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