creation of ext4 filesystem takes 20+ hours???

[Marco Fioretti]

On Fri, Oct 28, 2022 at 13:54, Liam Proven  wrote:
...Marco, you did not specify if you were using MBR or GPT. I would
recommend MBR for such relatively small drives.

I do not have a T430 but I do use two T420 machines, and I know their
firmware can switch between BIOS and UEFI mode according to the boot
settings.

If you install a new copy of Ubuntu you will get an ESP whether you
like it or not, so you may as well use UEFI boot. But you will need to
set the firmware to boot from the 2nd disk and not the 1st disk if you
want the machine to be bootable in the config you describe.
Hi Liam, and thanks for stepping in. Now, I understand what you wrote but, for example, I have no idea of whether I was using MBR or GPT. So, could you or anybody else
please spend a few more minutes  listing what to do, and in what order?
AFAICT from your post and some quick googling, I should:
1) quit the install, turn off the computer
2) play with the BIOS to make it boot from /dev/sdb
3) restart, retry the installation
am I missing something? And in any case, can you please detail how to proceed/what to look for or change in step 2, or good references to read?
TIA,
Marco
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