Making 64 bit vista boot disk on a 32 bit xp ?

[gurmi101]

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.

 

[randomizer]

I don't think you can do that. I know with nLite and vLite you need a 64-bit OS to make 64-bit boot disks. However, you could try this option before going any further:

1) Boot the Vista disk and go to the repair menu. Choose the Command Prompt.

2) Type

bootrec.exe /fixmbr

del C:\boot\bcd

bootrec.exe /rebuildbcd

If your bootloader is screwed this should fix it. It will repair the MBR and then delete and rebuild the BCD (which is pretty obvious from the commands actually ).

 

[gurmi101]

Thank you Ill do that.