Mac with MBR iPXE and bless nextonly

[MichalM.Mac]

I encountered this problem again in different scenario:

Case 1 boot to rEFInd through firmware boot menu: WORKS
Boot (holding down option key) -> type firmware password (optional) -> select EFI Boot rEFInd -> select Boot Legacy OS iPXE -> load pxelinux

Case 2 permanent boot to rEFInd: FAILS
bless --setBoot --folder /Volumes/rEFInd/EFI/refind --folder /Volumes/rEFInd/EFI/refind/x64_refind.efi
Boot -> rEFInd -> select Boot Legacy OS iPXE -> load pxelinux <- fails with "Failed to load ldlinux.c32."

I was able to solve Case 2 using bless --shortform flag. From bless man page:

Quote:Use an abbreviated device path form. This option can allow for booting from new devices, at the expense of boot time performance. This is only supported on EFI-based systems.

However using --shortform with --nextonly does not seem to fix issue from first post:

Code:

bless --device /dev/disk0s2 --setBoot --nextonly --legacy --shortform

I guess this thread[/u] is bit off topic for iPXE forum but I hope it will at least help someone doing google searches on similiar issue.