-Windows Vista does not work in Fat32, I have achieved it almost install in Fat 32, cheating it. After the install menu "choose partition" I have formatted the partition of NTFS to Fat32 with Alt+Tab. Then look almost until the end. Just, at that final moment, this says "a critical component has not been installed, restart to repeat boot process"
After restarting it says "missing bootmgr" despite being installed.