I downloaded the Windows 7 Build 7000 Beta today with the product key and I'm trying to install it on a Dell E520 desktop. Just to complicate matters, this machine already has Windows XP (installed on a primary partition) and Ubuntu Linux (installed on an extended partition). I created a 75 GB primary partition for Windows 7 formatted to ntfs. When the Windows 7 installer asks me where to install Windows 7, I point it to the empty Disk0 Partition 2 (WinXP is on Disk0 Partition 1). However, when I press Next expecting this long-awaited install to go ahead, I get this message: ...........and that's as far as I can get with this. I should mention that I'm using Grub (Linux) as my bootloader in this dual-boot system and Grub rather than the Windows bootloader is in the MBR. Grub boots Windows XP by chainloading the WinXP bootloader. Any clues how I can overcome this?