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On Sunday, 10 July 2022 17:37:00 BST Michael wrote: |
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> This is happening if the EFI firmware for some reason has re-scanned the |
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> attached block devices to find bootable UEFI images. I've seen something as |
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> simple as rebooting with, then without a bootable USB drive causing this. |
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> Since the images boot order is editable, in your case via bootctl, then it |
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> should be a fixable problem. |
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But, as I said, the order is unchanged, yet the BIOS displays them in reverse |
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order. I think the BIOS is not long for this world, as you will see... |
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This machine shows bizarre behaviour in booting as well. Often, as soon as the |
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POST is finished and the BIOS asks which kernel image to hand over to, I have |
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no keyboard or mouse - except for CTRL-ALT-DEL, which does reboot. |
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The thing that got me exercised today was Gentoo complaining that it couldn't |
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mount /boot - wrong FS type or...etc. So I had to do something. So today |
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(well, yesterday now) I told the BIOS to load its standard optimised defaults, |
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then rebooted, then told it to load my tuned set and rebooted again. Then I |
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booted a SystemRescueCD (because the USB version showed that same no- |
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keyboard problem), formatted /boot with FAT32, zapped / then recovered a week- |
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old backup. Then, still in RescCD, a sync and world-update brought the system |
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back. |
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Even then, running bootctl remove; bootctl install; replace /boot/loader/ |
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loader.conf; bootctl update - still left no UEFI boot option for the Gentoo |
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system, though it usually does create one. I had to use efibootmgr to create a |
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boot option, then do the bootctl dance again. |
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Finally, a bootable, running system. |
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Oh, one other thing. This machine has a small unformatted partition before / |
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boot, and gparted on the rescue CD showed me that it had lost its bios_grub |
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flag. Could that account for the wrong FS type error? |
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Should I consider re-flashing the BIOS? It's getting on for 10 years old. I did |
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that to another machine once, thereby killing it stone dead. |
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-- |
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Regards, |
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Peter. |
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