Manual for creating a bootable USB drive (UEFI / GRUB):
Run BootIce (is a part of the distribution)
choose the right USB flash drive (need be more than 2GB)
Re-format the flash drive in the USB-HDD mode
(Optional, if the flash drive is allready USB-HDD, but it is necessary if the flash drive was used as a boot drive earlier):
Flash drive must be formated to FAT32 file system, and it needs to make active:
Set the MBR through BOOTICE (GRUB / BOOTMGR):
(Or install Windows NT6 MBR, boot WinPE5 menu only)
(It also can be useful for older BIOS, when GRUB4DOS loaded incorrectly)
Set PBR through BOOTICE (BOOTMGR) :
Extract all of AdminPE_UEFI.iso to the root of the USB drive,
using UltraISO or WinRAR.
P.S. when USB drive boot into the UEFI mode will load reFInd, and will be available MemTest86 for UEFI and UEFIMark.
In the case of Secure Boot (loading only signed UEFI loaders):
you must first switch UEFI loaders (you can switch it to another computer):
rEFInd to Microsoft BootManager: run [flash drive]: \ EFI \ Microsoft64.cmd.
Microsoft to rEFInd (return rEFInd loader): start [flash drive]: \ EFI \ rEFInd64.cmd
There will also be displayed loaders from Linux and MacOSX (UEFI)
(if they are present in the system)
To run PE on tables read the manual for running on the TabletPC
To run PE in UEFI mode (Secure Boot) read the manual for running in UEFI mode (Secure Boot) .