Re: Some ideas about new features of grub

[Colin Watson]

On Sat, Jul 11, 2009 at 06:20:13PM +0200, Michal Suchanek wrote:
> The other problem is that scripts like os-prober that use linux
> filesystem code for probing filesystems destroy your data.
> 
> Linux cannot mount journalled filesystems readonly. It always modifies
> them. The extent of the modifications and the impact may vary
> depending on the state of the filesystem (clean/mounted) and the way
> you are going to use it in the future (resume the system/fresh boot)
> but until Linux people implement readonly filesystem support any Linux
> based os-probers cannot be recommended.

I'm pretty sure this is fixable with blockdev --setro. The main reason
we haven't got round to doing this in os-prober yet is that we need to
get round to adding blockdev to busybox (which is important for
os-prober's original purpose, the Debian installer).

-- 
Colin Watson                                       address@hidden