On Friday, 11 December 2020 18:24:27 GMT the...@sys-concept.com wrote: > On 12/11/2020 10:45 AM, Michael wrote: > > On Friday, 11 December 2020 16:42:08 GMT tedheadster wrote: > >> On Fri, Dec 11, 2020 at 9:27 AM <the...@sys-concept.com> wrote: > >>> On 12/11/2020 07:07 AM, the...@sys-concept.com wrote: > >>>> Now, when I boot I get a message: > >>>> > >>>> Block device UUID=d32946b3-2236-4998-80dd-68b7d78e0c7b is not a valid > >>>> root device. > >>> > >>> This puzzles me. I cannot find the string "is not a valid root device" > >>> (or > >> > >> sub-strings) in the source code for the Linux kernel, GRUB2, and refind. > >> It > >> seems to me it should be in one of them. > >> > >> - Matthew > > > > The error is indicative of the kernel driver for the / block device > > missing. If it is not built in-the-kernel, but as a module, then it > > should be in initramfs. > > > > Copy the kernel image, System.map, .config and corresponding initramfs to > > the /boot partition, then point your boot manager to the kernel to boot > > it. > How do you copy/generate initramfs in /boot directory?
https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Kernel https://wiki.gentoo.org/wiki/Genkernel If you're using genkernel it will copy it to /boot. Besides the Handbook you may find the following reference material on boot managers/loaders useful: For rEFInd see here: https://wiki.gentoo.org/wiki/Refind For GRUB see here: https://wiki.gentoo.org/wiki/GRUB2 For efibootmgr see here: https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/ Bootloader#Alternative_2:_efibootmgr
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