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On Thursday, 26 September 2019 10:16:54 BST Adam Carter wrote: |
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> > > The Gentoo Handbook says to create a small unformatted partition at the |
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> > > beginning of the (primary?) disk, then to create a FAT-32 partition for |
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> > > /boot, then whatever other partitions are required. |
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> > |
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> > Another question answered: yes, it has to be the primary disk. I installed |
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> > a small test system on another disk. It has its own FAT-32 /boot |
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> > partition, in which I set up a similar directory structure to the main |
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> > system's. Efibootmgr still insisted on adding the UEFI entry to the main |
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> > set, in spite of my telling it to use the secondary disk. And the BIOS |
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> > couldn't see the image on the secondary disk. |
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> |
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> I found my BIOS didn't recognise the UEFI setup until it was |
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> specified/setup by efibootmgr, so that checks out. What was the efibootmgr |
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> command you were using for the second disk? |
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efibootmgr -c -p 3 -d /dev/sda -L "TestSys" -l '\EFI\BOOT\bootX64.efi' |
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> > The conclusion is that, at least on this motherboard, there is precisely |
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> > one set of UEFI boot images, and it lives on the primary disk of the |
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> > system. Well, I haven't yet worked out how much of it is on the disk and |
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> > how much in BIOS storage. The point remains, however, that I can't spread |
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> > boot images over several disks. |
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> |
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> That's pretty poor. |
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It isn't what I expected either. |
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> What does efibootmgr show? |
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# efibootmgr |
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BootCurrent: 0000 |
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Timeout: 1 seconds |
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BootOrder: 0000,0004,0005,0001,0002,0003,0006,0007,0008,0009,000A,000B |
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Boot0000* Gentoo Linux |
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Boot0001* UEFI:CD/DVD Drive |
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Boot0002* UEFI:Removable Device |
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Boot0003* UEFI:Network Device |
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Boot0004* CD/DVD Drive |
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Boot0005 Hard Drive |
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Boot0006* UEFI:CD/DVD Drive |
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Boot0007* UEFI:Removable Device |
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Boot0008* UEFI:Network Device |
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Boot0009* UEFI:CD/DVD Drive |
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Boot000A* UEFI:Removable Device |
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Boot000B* UEFI:Network Device |
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I'll delete all those duplicates. I don't know what's creating them. It's |
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happened a few times since this mess started, but I never saw it once before |
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then. |
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> I got the impression that I would be able to UEFI boot from multiple |
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> different devices, eg a USB drive with UEFI as well as the hard disk. |
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Oh yes, removable devices can be booted, but not secondary, internal hard |
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drives. Apparently. On this system. Today. |
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-- |
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Regards, |
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Peter. |
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