Unsolved WinPe and BIOS Uefi

[zingaro]

winpe.iso ( windows 8.1 and 10 ) does not start with machines with UEFI Bios only,
the IPXE and the IPXE menù start correctly with the PC with Bios UEFI , but when I select the iso, after download it starts correctly ,
memdisk work fine but at the next steps return the message " file missing … )

I tried the same ISO deployed with wimboot ( with legacy bios works fine ) files but I have the same error.
it’s necessary rebuild the winpe.iso with internal changes ?

Regards

[Sebastian Roth]

@zingaro Can we mark this solved? I guess sudburr’s hint is spot on.

[zingaro]

ok !
thanks a lot ,
it’s a different ISO build ,
I will try rebuild a new iso and test it !

Regards

[sudburr]

When you mastered your 64bit PE did you master it for Legacy AND UEFI booting?

To Create Legacy Bootable x86 .ISO
----------------------------------
"oscdimg.exe -m -u2 -b"<path to source files>\boot\etfsboot.com" "<path to source files>" "C:\output\new86.iso"


To Create Legacy/UEFI Bootable x64 .ISO
---------------------------------------
"oscdimg.exe" -m -o -u2 -udfver102 -bootdata:2#p0,e,b"<path to source files>\boot\etfsboot.com"#pEF,e,b"<path to source files>\efi\microsoft\boot\efisys.bin" "<path to source files>" "C:\output\new64.iso"