On Sat, Jul 20, 2019 at 2:37 AM Ian Zimmerman <[email protected]> wrote:
> On 2019-07-19 20:58, Adam Carter wrote: > > > I experimented found the following worked in /etc/default/grub; > > > > GRUB_DEVICE="PARTUUID=d3554d49-02" > > > > Which writes grub.cfg as; > > linux /vmlinuz-5.2.0-gentoo root=PARTUUID=d3554d49-02 ro > > init=/usr/lib/systemd/systemd iommu=pt raid=noautodetect > > > > PARTUUID looked up with blkid. No initramfs required :) > > I don't get this. blkid is userspace. The _kernel_ needs to know what > the root fs device is, before it even starts pid 1. > Sorry I was misleading by not using chronological order. The steps are; 1. Use blkid to look up the PARTUUID of the root partition 2. Add this to /etc/default/grub as GRUB_DEVICE="PARTUUID=d3554d49-02" 3. run grub-mkconfig 4. Reboot
