HDD Boot from ipxe.efi loaded via network

[simon]

Progress.

If you don't have a FAT32 formatted ESP, it looks like this:

Code:

ipxe: iPXE> imgload file://dsfg/sdfg
ipxe: LOCAL 0x9698bd48 could not enumerate handles: Error 0x7f4de08e (http://ipxe.org/7f4de08e)
ipxe: Download of "sdfg" failed: Error 0x7f4de08e (http://ipxe.org/7f4de08e)
ipxe: Could not start download: Error 0x7f4de08e (http://ipxe.org/7f4de08e)

Setting the GPT label for the ESP is wrong. You need to set the FAT label, i.e. mkfs.vfat -n MYLABEL /dev/sda1 or fatlabel /dev/sda1 MYLABEL, which finally lead to success on the above mentioned HP, and an Intel NUC NUC5i5RYB:

Code:

ipxe: iPXE> imgload file://FATLABEL/EFI/debian/grubx64.efi
ipxe: LOCAL 0x9a938ce8 found PciRoot(0x0)/Pci(0x1F,0x2)/Sata(0x0,0xFFFF,0x0)/HD(1,GPT,86502F95-E8D0-4BFC-B4BC-76D6123D2D77,0x800,0x80
ipxe: 000) with label "FATLABEL"
ipxe: LOCAL 0x9a938ce8 using PciRoot(0x0)/Pci(0x1F,0x2)/Sata(0x0,0xFFFF,0x0)/HD(1,GPT,86502F95-E8D0-4BFC-B4BC-76D6123D2D77,0x800,0x80
ipxe: 000) with label "FATLABEL"
ipxe: LOCAL 0x9a938ce8 base path ""
ipxe: LOCAL 0x9a938ce8 using "\EFI\debian\grubx64.efi"
ipxe: file://FATLABEL/EFI/debian/grubx64.efi...Downloaded "grubx64.efi"
ipxe:  ok
ipxe: iPXE> boot
ipxe: Executing "grubx64.efi"
[..grub prompt here..]
ipxe: Execution of "grubx64.efi" completed
ipxe: iPXE>

If you have an ESP with an empty label, like in my previous post, it doesn't work, i.e. file:///EFI/debian/grubx64.efi does not work, even though the output looks different from passing an invalid label.

So far this looks promising, I'll continue experimenting next week.