@Tom-Elliott When searching for a solution I recall seeing a related post on GitHub but that was not me. Today I created a new VM that was 70GB with 2GB EFI partition and after sysprep and it yielded the similar resize error during capture.
I then tried Windows 11 25H2 June 2026 Build 26200.8655 with 60GB VM and it generated the resize error. 25H2 with 60GB VM and 2GB EFI also generated the resize error after sysprep during capture.
The AI suggested defrag C : /X
I ran the defrag before sysprep and capture was succesful.
The pre optimization total fragmentation was 22% and post defragmentation it was also 22%
To my understanding the /X flag consolidates free space. How was this the solution to my issue?
Per the FOG Project wiki I found that defrag is recommended before sysprep:
"…
Before Running Sysprep
Other steps to consider are:
Run Chkdsk /f /p prior to imaging
Defrag the drive
Make sure 2gb of disk space is free or the NTFSresize will fail
Make sure the FOG service is installed and properly configured
Update your hostnamechange.dll file
…
"
https://wiki.fogproject.org/wiki/index.php/Client_Setup