Hey ilko I have more Windows 8 infos at home, installation of Windows 8 with eSATA key worked at work, installation of Windows 8 with USB failed (same key in usb mode), it complains right after I click Install it does not find a driver, with FAT32 partitioned key, no advanced options but I don't really know which driver is it about, my key does not need a specific driver to work in usb mode, I will try in NTFS mode and a few of your advanced options and let you know //Edit: Same in NTFS with advanced option #3 //Edit2: Tried DriverPacks Mass Storage and Chipsets but couldnt find one working for the problem, Intel SATA AHCI and USB drivers are shown in list but when I select it and continue it comes back to the driver selection, will look if someone in thread as got same problem //Edit3: Have tried numerous of drivers without sucess, the "Windows 7 USB DVD Download Tool" also failed to recongize my usb stick, I will try another approach by using bootsect.exe to make usb bootable and XCOPY windows files, its explained on MSDN blog here //Edit4: Looks like machine specific problem rather than a usb key problem because now I'm back at home, the same key works in USB mode, the only difference I notice is that on my home machine(where it works for both eSATA+USB) I see the grub4dos menu you have customized with a Green background, and on my work machine (where it fails in USB) booting on the key does never show the grub4dos green menu, instead there is a blackscreen for 10sec. (seen physically and also in Qemu) then the Windows installation starts and fails later (asking for an unknown driver after hitting Install), very weird bug, I'm stuck, I will try to look the long list of replies to see if someone experienced the same trouble //Edit5: Finally method in Edit3's link worked with diskpart.exe, bootsect.exe and xcopy.exe invocations on my work computer, it looks like a winsetupfromusb with win8+usb problem, unfortunelly it is not a complete solution for you ilko but at least from my edits you can easly spot there is something wrong with winsetupfromusb with win8+usb but not with esata