Thanks for your Support and for starting this subject on Install of Vista from USB.
In fact when we use USB_MultiBoot2.cmd for making a MultiBoot USB-Drive,
the possibility to Install Vista from USB is already build in.
As ilko_t indicated we need to make a BootSector File which refers to BOOTMGR
and that is exactly what occurs with USB_MultiBoot2.cmd Program.
In my Guide for MultiBoot USB-stick with boot.ini Menu I indicated in Section B-6
the possibility to Boot from Windows PE 2.0 and than launch Vista Setup.
For this purpose I used an USB-Harddisk with 2 partitions,
where the first partition is 1900 MB and is SET Active and has FAT Format (using PeToUSB)
Add Windows PE 2.0 files to the U_CONTENT Source Folder and
Run USB_MultiBoot2.cmd to make the MultiBoot USB-Drive.
On the second partition we have enough room to place our Vista Setup Installation Files,
whereas an USB-stick will in general be too small.
Boot with Windows PE 2.0 from USB-Drive and in the cmd Window
Run Vista Setup from the second partition of the USB-Drive.
It is important to take care that at the Restart after Expanding Files,
Booting occurs from the Harddisk on which we Install Vista.
In a modern BIOS having a BIOS Bootmenu via Press F8 or Esc,
we can select to Boot only once from USB-Drive and default from Harddisk.
So than everything is easy.
For older BIOS it is needed to unplug the USB-Drive just at the Restart of Vista Install.
Earlier unplugging gives Install Error (cannot be solved).
To late unplugging USB-Drive gives Boot Failure, which is solved by
Restart of the computer enabling to Continue Vista Setup.
So in this case everything runs also fine for Install Vista from USB.
Booting with Windows PE 2.0 does not take extra time,
since it is otherwise included in Vista Setup.
EDIT: I have tried also to Boot from BartPE and than Run Vista Setup,
however this FAILED. Vista says: Incompatible PE Version !!
This post has been edited by wimb: 26 January 2008 - 03:59 PM