It is normal that the iso file patched by tiny11 weighs only 782 mb

[allhyper]

It's based on W11 24h2 Release

Original W11 ISO file

[allhyper]

Also found a problem when running the ISO on a VM, but there's nothing in the logs

[Miiraak]

Hi,
No is not normal, a problem has occured when you have tried to build the tinyISO. The output file is corrupted.
I've made mine with a 'Win11_24H2_French_x64.iso' dowload from Microsoft.com Win11 download to compare with your result.

Compare result between .iso with 'tiny11maker.ps1' :

Result with 'tiny11coremaker.ps1':

As you can see, the coremaker, that remove more stuff than the regular maker, loose ≈ 50% of its weight.
The probleme you facing down with your VM is induce by the corrupted file, shown by error 0x8007000D...

The solution is to retry to build your tiny11. 🐍