Am 01.10.20 um 07:22 schrieb Chris Murphy: > On Wed, Sep 30, 2020 at 4:22 PM Marius Schwarz <fedora...@cloud-foo.de> wrote: >> Am 01.10.20 um 00:02 schrieb Chris Murphy: >> >> I made some more tests. It's a race, 1 out of 10 tries succeeds and the >> chance that it does is improoved by inserting the usb drive while being >> in the bios. >> >> The F31 grub files i exchanged do not seem to have something to do with it. >> >> The race happens with the same probability regardless of GRUB Fedora >> release version? >> >> No, F31 boots everytime under any condition. It's only for F32/33 afaict. >> >> I tested it with the same stick, to avoid a problem with the stick >> electronics itself. > OK so some kind of regression in GRUB, but also a firmware bug because > otherwise many other people would run into this. It's GRUB 2.02 in > Fedora 31 and GRUB 2.04 in Fedora 32. So it could be an upstream bug. It's M$ firmware, so be sure it has bugs. ( could tell you about one very nasty )
Until F32 i had no problem booting any livedisk, so something changed. > Where I'd start is making a livecd-iso-to-disk based USB stick, from > the Fedora 32 ISO that you already know fails, and make sure it still > fails when created this way. If it doesn't, then it's probably not > GRUB it's something else about the image. > > But assuming it fails, you now have an easily modifiable USB stick, > it's read-writable, so you can just copy each test grubx64.efi binary > onto the stick. > > You could start with this, pretty sure it'll fail too. So just extract > the grubx64.efi from grub2-efi-x64-2.04-1.fc32.x86_64.rpm and replace > the one on the USB stick. > https://koji.fedoraproject.org/koji/buildinfo?buildID=1356278 > > I replace anything besides boot and grub.cfg , and it's the same .. inserted before powerup => not working, inserted while in bios => working and this does not change if altered or unaltered. AFAIk the MBR ( or alike ) has a portion of code in it. sure it's not there and the bootloader needs to be updated to have effect? Is it possible to boot from the stick and then perform a grub-install with an old grub? best regards, Marius _______________________________________________ devel mailing list -- devel@lists.fedoraproject.org To unsubscribe send an email to devel-le...@lists.fedoraproject.org Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@lists.fedoraproject.org
