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wimbI hope you don't mind speculations from a novice in your otherwise well-structured Tutorial ...

...
I have another hypothesis! ...

TEXTMODE is divided into two phases.
QUOTE (wimb @ Mar 25 2009, 03:29 AM)

The $OEM$ folder should NOT be added to Bootfolder $WIN_NT$.~BT on Target Drive...
In my case, in order to avoid the bluescreen, the $OEM$ folder containing TXTSETUP.OEM and driver files (no TEXTMODE sub-directory) MUST be added to Bootfolder $WIN_NT$.~BT on Target Drive. This is the first phase where required Mass Storage Drivers are installed.
Again, in my case, the only required Mass Storage Device is the Toshiba RAID Controller.
Now I speculate that the RAID Controller is NOT the only Mass Storage Device required. When first boot to TEXTMODE, the Boot Partition is the Target Drive, and when TXTSETUP.OEM is found in the $OEM$ folder on the Boot Partition, the RAID Drivers are loaded as instructed by TXTSETUP.OEM,
BUT the TXTSETUP.SIF is ignored/excluded!!
In the second phase of TEXTMODE, the RAID Controller is installed,
BUT the USB Device is missing ...

... It may be necessary to add more Driver descriptions to the [MassStorageDrivers]
and [OEMBootFiles] Sections of WINNT.SIF with the value equal "RETAIL", so that the additional Drivers are installed in accordance with the [SCSI] Section of TXTSETUP.SIF. Is this the secret? ...

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EDIT: When Mass Storage Drivers = "RETAIL", no need to add corresponding Driver Files List to [OEMBootFiles]. "RETAIL" refers to [SCSI] Section and Driver Files List in TXTSETUP.SIF. ? .
QUOTE
... but should have been Added twice to XP Source Folder on USB-stick as described in your reference on this subject. Could this be the problem?
I have tried every possible variation ...

... that I can think of! Trial-and-Error, and eliminating possibilities that have no effect.
QUOTE
In another post:
http://communities.intel.com/thread/2699bdwilcox states:
QUOTE
Make sure to add the "IDE CD-ROM (ATAPI 1.2)/PCI IDE Controller" = "RETAIL" line to the [MassStorageDrivers] section in your WINNT.SIF or else the Windows install won't find the hard drive after reboot.
Hmmm... This sets up the Controllers for use in the second phase of TEXTMODE. However, rather than a CD-ROM Controller found in [SCSI] Section of TXTSETUP.SIF, this should be the USB Controller? Which is ... ? Still confused ...

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Regards