[SOLVED] Could not find the root block device in UUID

[FordArthur]

I know that's there are several threads about this but none of them seem to solve my situation.

I've used genkernel for my compiling my current kernel, but since I want to use QEMU and disable stuff that I don't use in my system I followed the steps from the handbook, but even when I don't touch anything, disk / filesystem related the kernel isn't able to recognize my root partition.

Thanks in advance!

[NeddySeagoon]

FordArthur,

That's not a lot to go on.

There are at least two ways to use QEMU.
To use an unmodified kernel, you set it up to use the emulated hardware that lspci shows you in the guest.

If you modify the host kernel to support virtio, you use the virtual devices.
Which are you doing?

UUID is a property of a filesystem. To mount root via UUID, requires an initrd.
Did you make one of those.?

The kernel can mount root using the PARTUUID, That's a property of a partition. No initrd required.

Here are some High Level pointers.
_________________
Regards,

NeddySeagoon

Computer users fall into two groups:-
those that do backups
those that have never had a hard drive fail.

[FordArthur]

I want to modify the kernel, not only for QEMU but also for disabling things that I don't use.

I haven't made an initrd as far as I know, currently I'm using UUID and genkernel so maybe genkernel did that work for me, and when I try to customize, do I need to do that too? and if so, how?

Edit: just realized, is initrd similar to initramfs? if so yes, I've set it up with dracut.

Thanks.

[pietinger]

[NeddySeagoon]

FordArthur,

The initrd was the original temporary root filesystem in a file. It was a compressed ext2 filesystem in a file.
The initramfs in a compressed archive og CPIO archives. Its still a root filesystem in a file. Only the internal structure has changed.

Old timers use the terms initrd and initramfs interchangeably.

Without outside (userspace) help the kernel understands

[FordArthur]