IPXE + UEFI + Parted Magic (solved)

[MultimediaMan]

I haven't had a chance to test this on a UEFI system, but I dare say your problem is related to not specifying an initrd path:

Code:

#!ipxe
set pmagic-path ${17}/Media-Depot/other/tools/pmagic

cpuid --ext 29 && set arch 64 || set arch 32

initrd ${pmagic-path}/initrd.img ||
initrd ${pmagic-path}/fu.img ||
initrd ${pmagic-path}/m${arch}.img ||
initrd ${pmagic-path}/files.cgz ||
chain ${pmagic-path}/bzImage${arch} initrd=initrd.img,fu.img,m${arch}.img,files.cgz edd=on vga=normal ||

exit

In a UEFI system, it is ~required~ that the initrd= specify which files to access in memory. I may be able to test this later today or tomorrow on a UEFI system, but this works flawlessly on a PCBIOS system.
The PMAGIC_2016_01_06.SQFS is contained within the mx.img file, and the syntax for multiple files in a kernel argument is comma-separated (some will handle multiple "initrd=", but not all).

If you want to Customize Parted Magic:

Code:

#!ipxe
set pmagic-path ${17}/Media-Depot/other/tools/pmagic

cpuid --ext 29 && set arch 64 || set arch 32

initrd ${pmagic-path}/initrd.img ||
initrd ${pmagic-path}/fu.img ||
initrd ${pmagic-path}/m${arch}.img ||
initrd ${pmagic-path}/files.cgz ||
chain ${pmagic-path}/bzImage${arch} initrd=initrd.img,fu.img,m${arch}.img,files.cgz edd=on eject=no firewall=no keymap=us vga=791 rdate=yes monday=3 ntpd=yes timeconfig=US/Central clockfmt=%R  ||

exit

Useful little distro.