I try to use Easy2Boot to allow me to place several ISOs etc on a single USB flash drive. Easy2Boot has a util that allows one to create .IMGptn that allows one to boot the payload either under UEFI as well as under MBR. The website has several ISOs that have been tested including Medicat
http://www.easy2boot.com/add-payload-files/list-of-tested-payload-files/
10
47.
Medicat MiniWindows Win10PESE_x64.iso (based on WinBuilder ISO), Win10PESE_x86.iso (based on WinBuilder ISO). Use MakePartImage.cmd and choose syslinux v4 (not v3 as suggested).
Medicat.17.04.01.iso
273. Medicat MediCat DVD ISO contains MSDaRT and WinBuilder WinPEs - use .iso file extension. If some systems that give a BSOD 0x000000A5 ACPI error, repeatedly press the F7 function key when it prompts you to press F6 as it boots to XP PE.
Medicat.4.23.2016.iso. To run Chrome and some other programs in MiniWindows 10, convert the ISO file to a .imgPTN file (use syslinux v4 or v5 - do not use v3 or will not boot to Medicat menu).
Medicat.17.04.01.iso
I have no problem using the Medicat MiniWindows10 17.10.01 since it does not have Linux bootloader attached. I attempted to use the 11GB Medicat USB ISO and make a .IMGptn file that I could put on a Easy2Boot flash drive. The instructions above indicate to use SyslinuxV4 or V5. When I do use Syslinux V4 the resultant IMGptn fails to boot properly on the Easy2Boot flash drive. It winds up hanging at the GRUB screen saying
Shell EFI 64
System Shutdow
System restart
Boot from First Hard Disk
Is anyone here sucessfully using Medicat USB ISO with Easy2Boot software?
UPDATE1:
Figured a solution. Once you select the IMGptn file you are prompted to replace the Easy2Boot partition table which is normal. Once you do that you are presented with a Easy2Boot CSM Menu. Normally one would select BOOT FROM THIS DRIVE which is option 1. With Medicat USB one has to select 4. Alternate Boot (syslinux.bin) once you do that the Medicat USB iso/IMGptn file boots like it would if the image had been written to its own USB flash drive. When I created this IMGptn file via Easy2Boot I selected SyslinuxV4
UPDATE2:
I have two USB flash drives here boot using Medicat USB ISO.
Drive 1: A Easy2Boot drive using an IMGPTN file in the WinPE diretory
Drive 2: A flash drive which was created using the steps outlined in the first page of this thread.
Test system is a Dell Optiplex 3040 which is using Legacy Boot but has the ability to boot via UEFI
DRIVE 1 Test using IMGptn file
When I boot the computer in
Legacy mode with Drive 1, under the computer boot device selection menu I see USB device under
Legacy. When I select the USB drive option I wind up seeing the main menu of the Medicat US which has a variety of entries for Mini Windows10 and other utils. That is how it should work.
When I boot the computer in
UEFI mode w Secure Boot off w Drive 1, I see two entries in the boot selection menu. One under
Legacy which boots to the main selection menu. If however I select the
UEFI boot entry the USB drive boots directly into Windows10 Mini.
DRIVE 2 Test
When I boot the computer in
Legacy mode with Drive 2, under the computer boot device selection menu I see USB device under
Legacy. When I select the USB drive option I wind up seeing the main menu of the Medicat US which has a variety of entries for Mini Windows10 and other utils. That is how it should work.
When I change the computer to boot via
UEFI w secure boot off and boot with Drive 2 then under the computer boot device selection menu there is only 1 entry for USB device and that is under
Legacy. There is no UEFI mode menu entry. Selecting the Legacy entry the drive boots to the Medicat selection menu.
It seems that if you want to see the main menu of the Medicat USB ISO then you have to boot the USB drive via Legacy Mode.
Why is it that I can not see a USB entry under this computer's UEFI using the Medicat USB standalone flash drive and instead only see a Legacy entry?
The only way to get a UEFI boot menu device to show is to use a IMGPTN Easy2Boot file. Even then the drive boots directly into MiniWindows10.
What I would like to be able to do is to boot either via Legacy Mode or UEFI mode and see the main selection menu of the Medicat USB. Is this not possible?