After the last vista 64 bit sp 2 update on my 64 bit pc, that pc wont boot anymore (what a surprise!).
So I want to do a system restore to a point before that last update, but cant find my repair disc and the original vista os-disc is useless at reparing.
On the net I found a 64 bit vista repair image at neosmart.net that I 'burned' to a usb-key using unetbootin-windows-357.exe.
The problem is that even the 64 bit pc can boot from an usb-device, it wont.
My hunch is that unetbootin is using a replica of the 32 bit xp system to make the MBR & bootsector on the usb-key.
So what I need is a way to make a 64-bit MBR & bootsector configuration on my 32 bit xp system.