Ubuntu 16.04, UEFI and software RAID 1

Scott Moser smoser at ubuntu.com
Mon Aug 12 16:27:34 UTC 2019

I've looked at this before.  To my knowledge, there is not a really good
Kees Cook described the problem and some options
https://outflux.net/blog/archives/2018/04/19/uefi-booting-and-raid1/ .

It'd be nice if there was a supported "right way" to do this.

On Sat, Aug 10, 2019 at 9:47 PM Leroy Tennison <leroy at datavoiceint.com>

> I have tried unsuccessfully so far to set up software RAID 1 while
> installing 16.04 or 18.04.  I was able to get install to finish a 16.04
> install by manually creating a EFI partition during the process but the
> system won't boot (HP DL380 Gen 10).  In doing research I'm seeing that the
> EFI specification doesn't address mirroring.  However, references were in
> the Ubuntu 12.04 era.
> Is this still true?  Can I have both EFI boot and RAID 1 for the EFI
> partition?
> If the install is successful are there things I can check/correct to get a
> successful boot?
> This is being set up for a customer at a remote site, is it even advisable
> to do RAID 1 on UEFI or is it best to do legacy BIOS for support reasons.
> Thanks for your help.
> Harriscomputer
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