On Fri 15 Dec 2017 at 13:18:17 +0100, Steve Keller wrote: > When calling update-grub, it scans all devices for operating systems > to put into the GRUB config. It even mounts all block devices to do > the scan. I'd like to avoid this and let it scan only a number of > configured directories, in my case only /boot. Scanning all devices > is annoying because > > * all disks that are normally idle and that have spun down (e.g. my > backup drives) have to spin up. This wears off my disks > unnecessarily and also causes long delays. > > * update-grub finds a number of operating systems that I don't want in > the GRUB config, e.g. on logical volumes for virtual machines, > backup images of old machines, etc. > > I haven't found anything on this topic in the documentation.
Purge os-prober. -- Brian.