12 Feb 2022, 19:04 by hans.ullr...@loop.de:
> Dear list, > > I am thinking of a solution of a problem. But I have an understanding > problem, > maybe you can give some background knowledge. > > The problem: I have one harddrive, there are two linuces installed. > > The partitions are as followed: > > kali-linux: 1st primary -> /boot > 2nd > / > > > debian 3rd primary -> /boot > 4th logical > / > > swap > > /home (encrypted) > > /usr (encrypted) > > /var (encrypted) > > > This is the structure, and as said before, only ONE drive. > > Now my question: Is it possible to configure grub that way, that I can choose > either kali or debian to boot? > > What I might to know, please correct me: > Both are running different kernels. As far as I understood grub, I can set > the > root partition ( / ) with the UUID. This is an entry in grub.cfg and maybe in > /etc/default/grub. > > But how can I tell grub, to use the kernel of the second /boot? > > I dunno, if it is possible at all, to get a dual boot, the way I want it. > With > a combination of Windows + Linux on one harddrive this is working, however, > just because grub does not touch the windows bootloader (as fas as I know), > and what of course is also working, if you got two harddrives, each with > different linux. They all can be booted from one grub installation, of course. > > Maybe I could find a solution, if I would have fully understood how grub is > working, and what it is doing. > > Any hints are welcome, and if this does never work at all, please drop me a > line. > This will work without any problems, despite what I see as unusual partitioning. You would have no need to configure Grub, but you would need to re-enable OS-prober, which would do it for you. Cheers! Harry