XP USB boot from any medium

http://www.911cd.net/forums//index.php?showtopic=14181&hl=

1.) Set in Bios boot from USB harddisk and disable hyperthreading.

2.) The fresh XP has to be installed as first partition with NO other harddrive or USB device together. Floppy, CD or DVD drives can stay.
Install XP on a normal harddisk, dont put Intel INF5 or so on it because this generates new drivers which may not be compatible to USB boot.

I installed only extra network drivers and my soundcard. All the others things can be installed later.

3.) Set pagefile on fresh XP to disabled.

4.)Then You HAVE TO plug in your USB device, from which You want to start later.
Let it be detected from the fresh installed XP!!!

5.)Here is the copy of the extra registry entry in Services, load and unload hive SYSTEM (of your fresh installed XP) from another working XP, or do the changes to the fresh installed XP direct with regedit in commandline.

Dont change other USB entries!!!

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\usbehci]
"Start"=dword:00000000
"Type"=dword:00000001
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):73,79,73,74,65,6d,33,32,5c,64,72,69,76,65,72,73,5c,75,73,62,\
65,68,63,69,2e,73,79,73,00
"Group"="Boot Bus Extender"
"DisplayName"="Microsoft USB 2.0 Enhanced Host Controller Miniport
Driver"
"Tag"=dword:00000012

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\usbhub]
"Start"=dword:00000000
"Type"=dword:00000001
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):73,79,73,74,65,6d,33,32,5c,64,72,69,76,65,72,73,5c,75,73,62,\
68,75,62,2e,73,79,73,00
"Group"="Boot Bus Extender"
"DisplayName"="USB2 Enabled Hub"
"Tag"=dword:00000013

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\USBSTOR]
"Start"=dword:00000000
"Type"=dword:00000001
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):73,79,73,74,65,6d,33,32,5c,64,72,69,76,65,72,73,5c,55,53,42,\
53,54,4f,52,2e,53,59,53,00
"DisplayName"="USB Mass Storage Driver"
"Group"="Boot Bus Extender"

[HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\usbuhci]
"Start"=dword:00000000
"Type"=dword:00000001
"ErrorControl"=dword:00000001
"ImagePath"=hex(2):73,79,73,74,65,6d,33,32,5c,64,72,69,76,65,72,73,5c,75,73,62,\
75,68,63,69,2e,73,79,73,00
"Group"="Boot Bus Extender"
"DisplayName"="Microsoft USB Universal Host Controller Miniport Driver"
"Tag"=dword:00000011


The ImagePath is the path to your driver in HEXCODE and you dont need to change this in your registry.



6.)In Registry, after You installed XP on harddrive, You HAVE TO delete whole key
MountedDevices in the registry of that fresh XP.

7.)In the windows\system32\config\ of the fresh installed XP delete all entries with
*.sav *.log *.evt This is only possible from outside (another installed XP).

8.)Delete old ntdetect.com and set the new one from me into the fresh XP.

9.)Verify that boot.ini is like

[boot loader]
timeout=30
default=multi(0)disk(0)rdisk(0)partition(1)\WINDOWS
[operating systems]
multi(0)disk(0)rdisk(0)partition(1)\WINDOWS="Microsoft Windows XP Professional" /fastdetect


10.)Copy and past all files and folders from the fresh XP to your plugged USB drive. Recyled (Bin) and System Volume Information copy not.


Thats all.
Good luck.
Dietmar


PS: Format your USB stick with the HP format utility hpusbfw.exe , which gives You a FAT or FAT 32 or NTFS (I think, all those work, I took FAT) partition and the file allocation table and sets the first partition on the USB stick itself as aktiv.

There may be errors in the tutorial. You should have to know, what you are doing.
I am doing my best.