Help please recover boot of my Qubes

[eva...@firemail.cc]

Hello,

After I changed some BIOS settings to boot from flash card on my Qubes
system. Qubes never boot again even though I changed all back.

Strange this that I do at bios is visiting "boot options" bios menu. It
give access to navidate to qubes xen.efi file, but not edit. Anyway, not
something is broken. First I through that I broke "xen.efi", but I
investigate it from other distro live usb and it is on it own place and
not empty.

I guess my system use UEFI to load? Or maybe I'm wrong and I'm at Legacy
boot mode? How to check it and how to recover my boot partition? As
mentioned before I have linux live CD and it's possible to install Qubes
Live(installed) usb flash if it will help...

What to check? How to recover? Please help!


BTW, in my bios I have "CMS support" enabled (and it was before as I
remember). Looks like it is legacy boot and not efi... I'm really not
sure what kind of mode system used to boot before :(

Thanks!

[eva...@firemail.cc]

Success! Fixed! It was EFI problem and efibootmgr help to fix it (from
UEFI troubleshooting)

[haaber]

> Strange this that I do at bios is visiting "boot options" bios menu. It
> give access to navidate to qubes xen.efi file, but not edit. Anyway, not
> something is broken. First I through that I broke "xen.efi", but I
> investigate it from other distro live usb and it is on it own place and

> not empty. <... snip ...>

My first advise if you run in such kind of trouble is to backup your
data. You can use your favourite live-linux on usb to do that ("tails"
is a good idea). After that, play around. I am not an expert on differnt
boot <-> bios configs, but "legacy" is "old-style" meaning that there is
a pre-1980 partition table in sector 0 of your disk. The setor ends with
55FF and the 4 times 0x10 byte give the partition data. That is easy to
check by hand, and with any kind of software (fdisk, etc). UEFI is
different, I never looked at byte structure on disc. You will find a
partition in VFAT that you can mount. It contains a folder EFI which
contains a folder qubes .. etc. Checking that, you know which install
you have. Then you can go back to bios & configure it to match your
disc structure. Good luck!

[Eva Star]

> disc structure.  Good luck!

Thank you for your answer!

To your other thread about windows manager:  "devilspie2" will meat you requests!