Arch Linux

xFlammy

Member

Registered: 2022-05-24

Posts: 8

Cant Boot after enabling SVM and IOMMU in bios

In preparation to make a KVM, I went to disable BAR support, enable SVM, and enable IOMMU in bios. Upon making these changes and restarting I was unable to boot into arch, andI get dropped into a shell that says "ERROR: devide uuid not found" and "failed to mount [uuid] to new root."

What should my first steps be in resolving this?

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 14,999

Re: Cant Boot after enabling SVM and IOMMU in bios

Try making those changes separately,

Your starting setup seems to be BAR enabled , SVM disabled, IOMMU disabled ?
SVM tends to work only on specific hardware (typically server hardware) so leave that disabled for now and test IOMMU + BAR first.

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Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

xFlammy

Member

Registered: 2022-05-24

Posts: 8

Re: Cant Boot after enabling SVM and IOMMU in bios

Try making those changes separately,

Your starting setup seems to be BAR enabled , SVM disabled, IOMMU disabled ?
SVM tends to work only on specific hardware (typically server hardware) so leave that disabled for now and test IOMMU + BAR first.

I individually tested each of the settings, turning them off and on again one by one, but the resuilt is the same with the UUID not matching. I booted into the arch install medium to check my fstab and the UUID of the drives and sure enough they have changed for some reason, and flipping SVM, IOMMU, and BAR on and off doesn't change them (i tested if it changed between toggling these). I'm pretty confused as to how or why they would have changed in the first place tbh