I've run into the same problem where I have an old hard drive with an EXT3 partition what cannot be mounted following the FC5 install. Note that this same partition will mount fine using Knoppix or older versions of Fedora. I recently installed FC5 on my main machine. This machine used to run FC4, but this was not an install. I dropped two new 160GB SATA drives into the machine and performed a clean install. Prior to the install I backed all of my important data files up to an old 40GB IDE drive. I am using both software RAID and LVM on the new install, but everything went smoothly with that. The only issue is that the EXT3 partition on the old 40GB drive cannot be mounted. It produces and error as follows: "mount: /dev/hde1 is not a valid block device" This IDE drive is connected to an HPT302 IDE controller card, but the last time I had problems with a card of this type was several years ago. I've been down the SE Linux road, and that doesn't seem to be the issue. Any other ideas? Thanks, -- Brian