I have the same issue : After upgrading to buster, the system doesn't boot anymore : it seems stuck at "Loading initial ramdisk ..."
With kvm access, when I choose in grub menu xen-4.11-amd64 and either kernel 4.9 or 4.19 , the system doesn't boot. when I choose xen 4.8-amd64 and kernel 4.9 or 4.19 , the system boot. ( Removing --nounzip didn't change anything in my case.) I noticed that xen 4.8 entries were using multiboot + module and xen 4.11 entries were using multiboot2 + module2. => I changed the xen 4.11 entries to use multiboot + module => the system boots successfully. On Wed, 17 Jul 2019 11:05:04 +0200 Hans van Kranenburg <h...@knorrie.org> wrote: > On 7/14/19 11:43 PM, Colin Watson wrote: > > On Sun, Jul 14, 2019 at 01:27:23PM -0700, Slava Kryvel wrote: > >> After upgrade from Debian 9.9 to Debian 10 I have got unbootable system. > >> > >> I'm using Xen hypervisor, which was also upgraded from 4.8 to 4.11 > >> during OS upgrade. > >> UEFI is enabled. > >> > >> After upgrade was finished, I was unable to boot again to Xen kernel. > >> But normal Debian kernel was still bootable. > > > > [...] > > > > I'm CCing a few folks who've contributed to GRUB's Xen support in one > > way or another in the recent past; hopefully at least one of them can > > help here? > > Just to be transparent here, not all possible functionality is tested by > the package maintainers (currently Ian and me) before throwing a new > package into Debian. This is simply not practically feasible for us. [0] > > We rely on the upstream tests to know that the upstream Xen code will > probably work. For Debian specific things, we do test our own use cases, > but e.g. UEFI is not one of them. For this, we rely on active users to > report problems and help solving them. So, yes, things like this can happen. > > Thanks for reporting this. Next step would be to follow Rogers > instructions, and provide config dumps, serial console output etc... > > We're certainly available to include changes / etc to fix things, given > proper information / testing reports from the user. But, the user has to > actively help to make that happen. > > Hans van Kranenburg (with Debian Xen team hat on) > > [0] > https://alioth-lists.debian.net/pipermail/pkg-xen-devel/2018-October/007438.html > >