Hi, It looks like some code is already there to avoid cdrom or USB install media being used as the grub-install target.
In the grub-installer script: > 552 # [...] if /cdrom seems > 553 # to be a USB stick then (hd0) may not be safe. If we hit either of > those > 554 # checks, then try the disk containing /boot instead. > 555 # The same goes for /hd-media, so avoid installing there as well. > 556 cdsrc=$(mount | grep "on /cdrom " | cut -d' ' -f1) > 557 cdfs=$(mount | grep "on /cdrom " | cut -d' ' -f5) > 558 hdsrc=$(mount | grep "on /hd-media " | cut -d' ' -f1) For hybrid media on USB it seems that /cdrom will be iso9660, so the next thing preventing an install to (hd0) is if cdrom-detect/hybrid is set to true. This seems a bit of a long shot, but in cdrom-detect it looks like this might go wrong if `list-devices cd; list-devices maybe-usb-floppy` finds the install media before `list-devices usb-partition` does. If someone who has hardware that can reproduce this, could please do the following, it could really help explain this: 1. boot a USB install up to the 'Configure the network' step, 2. drop to the Alt-F2 shell, 3. run these commands and note the output from them: # mount | grep cdrom # list-devices cd # list-devices maybe-usb-floppy # list-devices usb-partition # list-devices disk Thanks! Regards, -- Steven Chamberlain ste...@pyro.eu.org
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