Does this product have, perhaps, AOMEI branding ?

https://www.disk-partition.com/free-...n-manager.html

There's a reference here to "PartAssist_WinPE.iso"

https://www.disk-partition.com/help/learnburn.html

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There's a picture here, for the OS-installed version.

https://www.sevenforums.com/software...assistant.html

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Why not try booting one of your older PCs with it ?
It could be a 32-bit WinPE after all. 64-bit processors
have both 64 bit and 32 bit instructions. The processors
have two "modes". The processor can be operated in
"Pure" mode, where it's 64-bit. But for the last ten
years or so, the processors have been running in a
"Compatible" mode where both 32-bit and 64-bit work.

A 32-bit media has the possibility of running on
32-bit CPUs as well as 64-bit "compatible" CPUs.
The only restrictions might be on memory model
and how you go about allocating memory and
handling address space. As long as the running
program does not need more than roughly 1.8GB
of memory while running, the thing should work
on either kind of CPU/system. 32-bit processes
have a 4GB address space, but usually that is
split for the two Rings of operation (at least for
protected modes). The 1.8GB number leaves 0.2GB
of storage roughly, to hold the executable code
that is loaded.

Paul

Hi Paul,

I tried the bootable 64bit version CD (from ISO file) on a 32 bit WinXP
PC, but the CD will NOT bootup. Note: Other bootable CDs do bootup
on this PC.

It is AOMEI brand.

Thanks again, John