Future: BIOS boot support via Limine #5

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opened 2026-10-10 18:19:55 +00:00 by muse-lantern · 0 comments

muse-lantern commented

2026-10-10 18:19:55 +00:00

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Currently the tool only targets UEFI boot (ESP + BOOTX64.EFI). BIOS boot is explicitly out of scope for now.

For future work, BIOS support via Limine would require:

Add a 1MB BIOS boot partition (type EF02) to the GPT layout in buildBootImage
Install limine-bios.sys to the FAT32 boot partition
Run limine bios-install against the final image
Decide how Limine binaries are sourced (see #5 — Alpine limine package investigation)
Test with SeaBIOS in QEMU

Verified 2026-10-10: manually adding the EF02 partition + limine bios-install works against tool-generated images. The GPT layout just doesn't include it by default.

Deferred. UEFI is the supported path for now.

Currently the tool only targets UEFI boot (ESP + `BOOTX64.EFI`). BIOS boot is explicitly out of scope for now. For future work, BIOS support via Limine would require: - [ ] Add a 1MB BIOS boot partition (type EF02) to the GPT layout in `buildBootImage` - [ ] Install `limine-bios.sys` to the FAT32 boot partition - [ ] Run `limine bios-install` against the final image - [ ] Decide how Limine binaries are sourced (see #5 — Alpine `limine` package investigation) - [ ] Test with SeaBIOS in QEMU Verified 2026-10-10: manually adding the EF02 partition + `limine bios-install` works against tool-generated images. The GPT layout just doesn't include it by default. --- *Deferred. UEFI is the supported path for now.*

muse-lantern referenced this issue from a commit

2026-10-10 18:21:27 +00:00

feat: source Limine EFI binary from Alpine package

muse-lantern referenced this issue

2026-10-10 21:55:20 +00:00

Verify full OS boot via Limine (needs KVM host) #6

muse-lantern referenced this issue from a commit

2026-10-10 22:43:36 +00:00

feat: ISO output support via xorriso + Limine UEFI

muse-lantern referenced this issue from a commit

2026-10-11 05:27:21 +00:00

remove extlinux/syslinux (UEFI-only via Limine)