Hi! I did what you adviced, and the installer does not find the sys file, and the setup process halts. I put all driver files into the i386 directory, as you suggested, did not work. Then I did a makecab on the sys file, and added the resulting .sy_ file to the i386 directory. Then I removed the original files (.cat, .inf., .sys) and did a makecab on all of them (separately) and put all the resulting 5 files (with extensions (.ca_, .in_, .sy_) but it did not help. The 5 files are: iaahci.cat iaahci.inf iastor.cat iastor.inf iastor.sys I attached the txtsetup.oem file (as txtsetup.txt, since the uploader did not let me to upload the .oem file). Here is what I added to the dosnet.inf: (to the appropriate place) [Files] d1,iastor.sys Here is what I added to hivesft.inf: (To the appropriate place) HKLM,"SOFTWARE\Microsoft\Windows\CurrentVersion","DevicePath",0x00020002,"%SystemRoot%\inf;%SystemRoot%\intel\sata" Here is what I added to txtsetup.sif: (to the appropriate places) [WinntDirectories] 300 = intel\sata [sourceDisksFiles] iaahci.cat = 1,,,,,,,300,0,0 iaahci.inf = 1,,,,,,,300,0,0 iastor.cat = 1,,,,,,,300,0,0 iastor.inf = 1,,,,,,,300,0,0 iastor.sys = 1,,,,,,,300,0,0 iastor.sys = 100,,,,,,,4,0,0,,1,4 [HardwareIdsdatabase] PCI\VEN_8086&DEV_2922&CC_0106 = "iaStor" PCI\VEN_8086&DEV_282A&CC_0104 = "iaStor" PCI\VEN_8086&DEV_2829&CC_0106 = "iaStor" PCI\VEN_8086&DEV_2822&CC_0104 = "iaStor" PCI\VEN_8086&DEV_2821&CC_0106 = "iaStor" PCI\VEN_8086&DEV_2682&CC_0104 = "iaStor" PCI\VEN_8086&DEV_2681&CC_0106 = "iaStor" PCI\VEN_8086&DEV_27C3&CC_0104 = "iaStor" PCI\VEN_8086&DEV_27C6&CC_0104 = "iaStor" PCI\VEN_8086&DEV_27C1&CC_0106 = "iaStor" PCI\VEN_8086&DEV_27C5&CC_0106 = "iaStor" PCI\VEN_8086&DEV_2653&CC_0106 = "iaStor" [sCSI.Load] ... ... iaStor = iastor.sys,4 [sCSI] iaStor = "Intel® 82801GBM SATA AHCI Controller (Mobile ICH7M/DH)" My windows source is a hungarian original sp2 disc, I integrated the sp3 and some other hotfixes with the /integrate switch. Then I did the modifications mentioned in this thread. Can anyone help me what I did wrong? I do not want to create an unattended disc, I still want to have the F6 option at the beginning, but I do not have a floppy drive. Thanks for any help. ghorvath Txtsetup.txt