Video above shows how to UEFI-boot using a .imgPTN file.
UEFI-booting using a .imgPTN file
- You cannot directly UEFI-boot to the E2B Menu system.
- You can UEFI-boot AFTER the .imgPTN file has been 'switched-in' and the E2B partition is replaced or you can UEFI-boot to a FAT32 partition 2 if you add one.
- You can add rEFInd into a .imgPTN image file when you make it, which will allow you to boot (for instance) to a WinPE OS on a different partition and run SWITCH_E2B to choose a different .imgPTN boot file (E2B v1.B0+) - see here for more details.
- You can replace Partition 2 on the E2B drive with a FAT32 partition containing UEFI WinPE boot files. This will allow you to UEFI-boot to WinPE from the E2B drive and select any .imgPTN23 or .imgPTNX4 file you want to run without needing to MBR-boot first - but you may not be able to MBR\Legacy-boot the E2B drive on some systems - see here for more details.
The Utilities - Memory Test menu in E2B contains a ready-made .imgPTN of MemTest86.
It supports MBR and Secure-mode UEFI booting for 64-bit and 32-bit systems.
You then copy the .imgPTN file (which is an image of a partition) to the E2B USB drive. All partition images must be made contiguous. The .imgPTN image file will then be 'switched-in' to completely replace the E2B partition with a new FAT32 partition. You can then UEFI-boot (or MBR-boot) to the new payload files on the new 'switched-in' FAT32 partition.
The E2B drive will now contain a completely different partition which will contain your EFI files.
If you have booted using QEMU, you may need to unplug and re-connect the USB drive before Explorer will show you the new partition contents.
Tip: If you want the 2nd and 3rd Primary partitions on the E2B drive to be kept, use the file extension .imgPTN23 instead of .imgPTN. Most E2B drives do not contain a 3rd partition however.
Other methods of UEFI-booting
1. Use the E2B grub2 menu system (mainly for linux payloads)
2. Add the UEFI boot files directly onto the E2B drive (not recommended)
WARNING: Adding the UEFI boot add-on may prevent some systems from booting to the E2B menu!
For this reason, I strongly recommend you use separate .imgPTN files for each UEFI payload and do not use this method.
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See Blog post