Boot confusion

[Liam Proven]

On Mon, 7 Jun 2021 at 17:50, Jack McGee <jack at greendesk.net> wrote:
> >
> I don't believe this is UEFI system:
>
> jack at Desktop:~$ /sys/firmware/efi
> bash: /sys/firmware/efi: No such file or directory

OK, so either it's a BIOS _or_ it's UEFI but in legacy boot mode.
Fine. IMHO this is easier.

> ESP is disabled.

You probably don't need it at all.

> How do I make the existing 250gig SSD the grub drive.

What device is it?

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

sudo grub-install /dev/sda

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!



-- 
Liam Proven – Profile: https://about.me/liamproven
Email: lproven at cix.co.uk – gMail/gTalk/gHangouts: lproven at gmail.com
Twitter/Facebook/LinkedIn/Flickr: lproven – Skype: liamproven
UK: +44 7939-087884 – ČR (+ WhatsApp/Telegram/Signal): +420 702 829 053