Install Windows PE as a partition on HDD - windows

Question

I'm trying to install a windows PE on a partition on same HDD with windows.
I copied winPE files ADK with Deployment Tools and Imaging Environment:
copype amd64 C:\WinPE_amd64
I used this code to make partitions:
diskpart
list disk
select <disk number>
clean
rem === Create the Windows PE partition. ===
create partition primary size=2000
format quick fs=fat32 label="Windows PE"
assign letter=P
active
rem === Create a data partition. ===
create partition primary
format fs=ntfs quick label="Other files"
assign letter=O
list vol
exit
I applied image on partition P: with command: dism /Apply-Image /ImageFile:"C:\WinPE_amd64\media\sources\boot.wim" /Index:1 /ApplyDir:P:\
I set up boot files with command BCDboot P:\Windows /s P: /f ALL, but after reboot i can't see WinPE in boot menu or in bcdedit.

Answer 1

I set up a lot of multi-boot machines - usually with some flavor of windows and winPE. I make a system volume and register the bootable OSes onto that. I think the recommendation is to do that - even if you're not interested in dual boot.
The script will be different depending on whether your firmware is UEFI or good ol' BIOS - Some of the tools seem to like a GPT better. BCDBoot, as I remember it, was fairly persnickety.
The system volume has to be FAT32, but your winPE should probably be NTFS. Here's a script similar to what I run when forced to stick with BIOS/MBR:
select disk {0}
clean
create partition primary size={1}
format quick fs=ntfs label="System Reserved"
assign letter="{2}"
active
create partition primary size={3}
format quick fs=ntfs label="{4}"
assign letter="{5}"
create partition primary
format quick fs=ntfs label="WinPE"
assign letter="{6}"
exit
Note that in the foregoing, the system volume is the active volume.
If you're on a UEFI machine and/or a system that supports GPT, you'd do it more like this:
select disk {0}
clean
convert gpt
create partition efi size={1}
format quick fs=fat32 label="System"
assign letter="{2}"
create partition msr size={3}
create partition primary size={4}
format quick fs=ntfs label="{5}"
assign letter="{6}"
create partition primary
format quick fs=ntfs label="WinPE"
assign letter="{7}"
exit
There's no "active" command on an EFI-booted drive - the EFI volume is always the active volume.
You'd make the choice of which to run based on the firmware you want to run under - found in your BIOS configuration menu (F12 at startup - but I guess that is hardware vendor-specific).
In either case, You'd still register the OSes in the bcd with bcdboot. You don't typically have to specify the /s switch with EFI. Also, you don't have to specify all firmware types - it will default based on the active firmware - no point in having more stuff in the bcd than you really need - it's arcane and worth keeping simple/small.
I tend to use the /addlast switch when registering winPE using BCDBoot- as we only boot to it in special circumstances (in my world). I also remove it from the displayOrder - so users don't inadvertently boot to it when it isn't appropriate.
If this is a secondary drive you're putting this on - you have to set the boot order in BIOS to make your secondary drive show up.
Alternatively, you might be able to register a bootable partition in the primary disk's BCD...in which case, you'd either need to sniff out the primary drive's active partition, temporarily assign it a drive letter, and register to that (or don't use the /s switch at all). I've never had the occasion to put a bootable partition from a secondary disk into the primary's BCD - but I suppose it could work.