How would I use both Legacy (BIOS) and UEFI in the same Ubuntu installation

Asked Dec 04 '22 at 20:50

Active Dec 04 '22 at 20:51

Viewed 42 times

I am installing Ubuntu on a external drive and I need said drive to have support for Legacy (BIOS) and UEFI machines. Without going into too much information WHY I want to do this, lets just say it would be less of a headache to have one installation for both booting methods in case I find a computer that has one but not the other.

and yes, I have googled all I can and have tried for the last 20 hours to do this with either booting in Legacy (MBR) correctly or UEFI correctly, but not both. One ending with a blinking underscore and an unbootable system.

tl;dr: I want to boot my Ubuntu installation on both Legacy (BIOS) and UEFI machines.

edited Dec 04 '22 at 20:51

asked Dec 04 '22 at 20:50

GYFS Jr.

3

Does this answer your question? How to Create a Full Install of Ubuntu 20.04 to USB Device Step by Step It covers both legacy BIOS and UEFI. – Archisman Panigrahi Dec 04 '22 at 20:56
Yes! I am sorry for the duplicate question. N00b here, thank you for answering my question! – GYFS Jr. Dec 04 '22 at 23:30
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There are some small differences between installing 20.04 and 22.04. For 22.04 see: https://askubuntu.com/questions/1403792/how-to-create-a-full-install-of-ubuntu-22-04-to-usb-device-step-by-step – C.S.Cameron Dec 05 '22 at 00:50

How would I use both Legacy (BIOS) and UEFI in the same Ubuntu installation

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