Re: 24.3. Updating Bootcode
- Reply: Toomas Soome : "Re: 24.3. Updating Bootcode"
- Reply: Warner Losh : "Re: 24.3. Updating Bootcode"
- In reply to: Toomas Soome : "Re: 24.3. Updating Bootcode"
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Date: Tue, 16 Aug 2022 12:01:40 UTC
Hi Toomas, For better OS support, the UEFI specification (UEFI 2.8A Feb 14, page 499) > is suggesting to use structure like: > > <ESP>/efi/<OS>/… > > And to use this suggestion, it means the UEFI Boot Manager needs to be > configured (see efibootmgr(8)). > > Therefore, once you have set up OS specific setup, there is no use for > default (<ESP>/efi/boot/…) and you need to update one or another, but not > both. > FreeBSD have <ESP>/efi/freebsd/... but it's not configured in efibootmgr: efibootmgr -v: --- BootOrder : 0004, 0000, 2002, 2003, 2001 Boot0004* Windows Boot Manager HD(1,GPT,8c497825-1db2-41f8-8924-85dfd0bb7283,0x800,0x82000)/File(\EFI\Microsoft\Boot\bootmgfw.efi) da0p1:/EFI/Microsoft/Boot/bootmgfw.efi (null) +Boot0000* EFI Hard Drive (SAMSUNG MZVLB1T0HBLR-000L2) PciRoot(0x0)/Pci(0x1d,0x0)/Pci(0x0,0x0)/NVMe(0x1,39-f9-b8-01-81-38-25-00)/HD(1,GPT,73acd1b2-de41-11eb-8156-002b67dfc673,0x28,0x82000) Boot2002* EFI DVD/CDROM Boot2003* EFI Network Boot2001* EFI USB Device --- so boot is definitely using <ESP>/efi/boot/bootx64.efi @Boot0000 I think I can create a new boot: --- efibootmgr -a -c -l /boot/efi/efi/freebsd/loader.efi -L FreeBSD-14 (and make it active) efibootmgr -a -b NNNN --- and create other for loader.efi.old in case of problems. In this case I will need only update <ESP>/efi/freebsd/loader.efi. Q: for what has been said in mailing, boot is compiled in /usr/src/stand, isn't a good idea that when it install new boot it backup old boot like /boot/kernel -> /boot/kernel.old? Thanks, -- Nuno Teixeira FreeBSD Committer (ports)