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It is a book.

You can build LFS on any system that meets the requirements[1].

> Does it support SATA and UEFI boot disks yet?

The Linux kernel supports SATA disks since forever. UEFI is also supported by most bootloaders. The distro you build by following LFS will define support for things like UEFI.

I think you're confusing LFS with maybe a livecd image they used to put out?

[1] http://www.linuxfromscratch.org/lfs/view/stable/chapter02/ho...

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In the context of a Linux distribution, there's a fair bit more to supporting UEFI than the BL supporting it.

At a minimum, disk layouts are drastically different in UEFI and BIOS.

LFS is so woefully out of date that it isn't even funny.

from the book: "If your host hardware is using UEFI, then the 'make defconfig' above should automatically add in some EFI-related kernel options."

The book refers to a separate text document for more info on UEFI, including the requirement of an EFI partition on a GPT formatted disk. Dated 2017. (http://www.linuxfromscratch.org/hints/downloads/files/lfs-ue...)

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