Hello
The error “VHD boot host volume out of space” typically indicates that the host volume of the Virtual Hard Disk (VHD) does not have enough space. Here are some steps you can take to troubleshoot this issue:
Check Disk Space: Ensure that the host volume where the VHD is located has enough free space. You might need to free up some space if it’s running low.
System File Check: Damaged or rewritten system files may cause this error. You can use the sfc /scannow command in Command Prompt to find and replace damaged Windows system files.
Create a Bootable Media: If you’re unable to boot into Windows, you can create a bootable media using a different PC and boot the affected PC using the media. From there, you can perform a System Restore or rebuild the Boot Configuration Data (BCD).