Windows 7 Install Unable to copy files using windows 7 usb dvd download tool Sometimes if your USB stick has something in its MBR you might get the error Windows 7 USB/DVD Download Tool error: We were unable to copy your files. Please check your USB device and the selected ISO file and try again. You have to start command prompt as an Administrator (On Windows 7 that means right clicking the cmd and selecting Run as Administrator) and use the diskpart utility. WARNING: Be careful to select the right drive or else your day won�t have a happy end because if you select the wrong drive you will lose all your data on this drive! Instead of formatting the partition with FAT32, you can also use NTFS (like WUDT does), but then you need an extra step to make the drive bootable: Bootsect.exe /nt60 X: �X:� is the drive letter of your USB stick. Bootsect.exe can be found on the Windows 7 DVD in the boot folder. However, I can�t really recommend using...