I accidentally introduced an Legacy Windows ISO issue in agFM v1.73 and v1.74.
In an attempt to fix a grub2 error with the loopback command that was causing the problem on some computers, I modified the windows iso code to load some required uncompressed files instead of the compressed .xz files. Unfortunately, although this works for UEFI mode, it doesn’t seem to work for Legacy mode (for some strange reason – must it be a grub2 bug?).
So I changed grub2 code back to load compressed .xz files if grubfm is started in Legacy mode.
so this code
loopback wimboot (${user})/boot/grubfm/wimbootxz;
loopback install (${user})/boot/grubfm/installxz;
It works in UEFI mode but not in MBRLegacy mode for some strange reason!