It is probably worth noting that if someone were to run a kernel update with a package manager after getting this working (using information from later posts in this thread), they would need to do a manual mkinitrd. At least that was my experience some time ago when switching from hda to sda in CentOS, future kernel-xen versions installed via yum tried to boot to hda and failed. However, I think I actually recompiled originally, though, as opposed to adding the new drivers to initrd, so I could be wrong. Dustin -----Original Message----- From: fedora-xen-bounces@xxxxxxxxxx [mailto:fedora-xen-bounces@xxxxxxxxxx] On Behalf Of Mark McLoughlin Sent: Wednesday, January 21, 2009 08:49 To: Jan ONDREJ (SAL) Cc: Fedora Xen Subject: Switching from IDE to virtio_blk [qas Re: Goodbye Xen on RH/Fedora?] (This is all getting offtopic for fedora-xen, we should really move to fedora-virt) On Wed, 2009-01-21 at 14:28 +0100, Jan ONDREJ (SAL) wrote: > virtio_net works well, but I have trouble to boot from virtio_blk. > > I can add second disk as virto block device, but I can't boot from > first disk. When switching from IDE to virtio, you need to first build a new initrd in the guest with e.g.: $> mkinitrd --with virtio_pci --with virtio_blk -f /boot/initrd-$(kernelversion) $(kernelversion) You only need to do this once. After that, if a new kernel is installed while you're booted off a virtio disk, then mkinitrd will include the modules automatically. Cheers, Mark. -- Fedora-xen mailing list Fedora-xen@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-xen -- Fedora-xen mailing list Fedora-xen@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-xen