Hi I am trying to install Windows XP from an USB flash disk (UFD). I managed to make the UFD bootable. The WinSetupFromUSB.log contains no error messages. But when I boot on the UFD, it is detected as a floppy (--> fd0), which makes all the grub commands irrelevant. Still I tried to adjust the commands accordingly, and managed to launch the first part of the windows install. But (once again) the process stops immediately, reporting the error: "The file biosinfo.inf could not be loaded. The error code is 14" or so. I found a lot of things about errors involving that biosinfo file, but they are mostly related to the absence of the file in the $WIN_NT$.~BT folder. Which is not relevant for me. So I came to the conclusion that it is rather related to the fact that the UFD is detected by the loader as a floppy. Could you tell me what you think about it ? And if I'm right what is the best solution to avoid the floppy detection ? Thanks in advance for your answers. P.S. The execution of WinSetupFromUSB was not exactly flawless: there was a dialog telling me that (if I remember...) the grub bootsector could not be installed and that it would install on the mbr. I tried to find the corresponding log, and came out with this: 2009/12/08 22:36:11- Installing grub4dos BS/MBR and files 2009/12/08 22:36:11- Backing up MBR of disk #1 2009/12/08 22:36:11- C:\WinSetupFromUSB\files\grub4dos\grubinst.exe -s=mbrdisk1-20091208-222835.dat -t (hd1) 2009/12/08 22:36:15- Backed up MBR of disk #1 2009/12/08 22:36:15- Backing up BootSector of disk #1 partition #0 2009/12/08 22:36:18- Backed up BootSector of disk #1 partition #0 2009/12/08 22:36:18- Checking for grldr string in BootSector of disk #1 partition #0 2009/12/08 22:36:27- Saved BootSector of disk #1 partition #0 2009/12/08 22:36:28- Grub4dos bootsector not found 2009/12/08 22:36:28- Checking for grldr string in MBR of disk #1 2009/12/08 22:36:32- Saved MBR of disk #1 2009/12/08 22:36:33- Grub4dos MBR not found 2009/12/08 22:36:33- Installing grub4dos bootsector to (hd1,0) 2009/12/08 22:36:33- C:\WinSetupFromUSB\files\grub4dos\grubinst.exe (hd1,0) 2009/12/08 22:36:40- Checking for grldr string in BootSector of disk #1 partition #0 2009/12/08 22:36:43- Saved BootSector of disk #1 partition #0 2009/12/08 22:36:44- Grub4dos bootsector not found 2009/12/08 22:36:44- Could not install grub4dos bootsector 2009/12/08 22:36:53- Installing grub4dos MBR to (hd1) 2009/12/08 22:36:53- C:\WinSetupFromUSB\files\grub4dos\grubinst.exe (hd1) 2009/12/08 22:36:59- Checking for grldr string in MBR of disk #1 2009/12/08 22:37:03- Saved MBR of disk #1 2009/12/08 22:37:04- Grub4dos MBR found 2009/12/08 22:37:04- Copying grldr 2009/12/08 22:37:04- Copying menu.lst 2009/12/08 22:37:04- Copying default 2009/12/08 22:37:04- grub4dos installed Hope that helps.