Boot confusion

[Jack McGee]

On 6/7/21 1:09 PM, Liam Proven wrote:
> On Mon, 7 Jun 2021 at 17:50, Jack McGee <jack at greendesk.net> wrote:
>
>> How do I make the existing 250gig SSD the grub drive.
> What device is it?


The 250 gig SSD is


jack at Desktop:~$ sudo blkid -p /dev/sda
[sudo] password for jack:
/dev/sda: PTUUID="562dd49d-ae00-454e-bf2d-b86cd24573e2" PTTYPE="gpt"
jack at Desktop:~$

one partition that is root.

does grub need to go in it's own partition?


>
> e.g. the ideal and easiest is:
>
> Disk № 0 is the SSD, disk № 1 is the HDD...
>
> /dev/sda = SSD
> /dev/sda1 = root partition
>
> /dev/sdb = HDD
> /dev/sdb1 = /home
>
> (say)
>
> If your BIOS is booting from /dev/sdd, then you just do
>
>
>
> Then change the boot device from disk 1  to disk 0 and that should, in
> theory, be it.
>
> But make sure you have a bootable USB key with the same version of
> Ubuntu on it, just in case things go wrong!
>
>
>