On Wed, Sep 13, 2023 at 01:54:04PM +0200, Vincent Lefevre wrote: > Hi, > > I need to use ddrescue on the root partition of my laptop. > > So I need to have the root partition mounted in read-only mode. > How can I do that? In roughly ascending order of comfort (but also of "external tools needed"): - break out in the initramfs, before root is pivoted to your customary root partition. At this point your system is running on the loaded initramfs (enter 'break=pre-mount' at the grub command line ** NOTE: please, double check this, it's from memory!) - use a "live" OS (either explicitly built for that, like Knoppix, or, e.g. Debian's "rescue" mode) - extract the disk and put it (perhaps in a USB case) into another computer I'm sure there are others :-) Cheers -- t
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