It's ok to install. This message means just that the author didn't pay the big money to microsoft for certificate. The same message shows when I install nero virtual drives, but I press continue and all is ok. By the way, what brand is the drive? Negoslav ----- Original Message ----- From: ANDY COLLINS To: access-uk@xxxxxxxxxxxxx Cc: blindgeekzone@xxxxxxxxxxxxxxx Sent: Tuesday, July 20, 2010 10:02 PM Subject: [access-uk] Installing an external drive on an XP computer Hi all - A friend has just bought an external hard drive for his XP machine, which is formatted NTFS, and when he tries to install it, he gets the message: The software you are installing for this hardware USB Mass Storage Device has not passed Windows Logo testing to verify its compatibility with Window XP. Continuing your installation of this software may impair or destabilize the correct operation of your system either immediately or in the future. Microsoft strongly recommends that you stop this installation now and contct the hardware vendor for softwear that has passed Windows Logo testing. Is this an issue, or is it still ok to install? Andy