Advertisements Hello all I have an almost identical problem as Registered User: uglysister. His problem was in the thread: http://www.tivocommunity.com/tivo-vb/showthread.php?p=4719066&highlight=cachecard#post4719066 As a favour to a friend, I was installing a cachecard. Looks like I have fallen at the first hurdle. I've attached the Tivo drive to my PC as a Primary Slave, and jumpered it accordingly. Following instructions from silicondust when i enter /nic_install/nic_install cachecard I get the error - Unable to access mfs I then entered the following command: nic_install cachecard --force 2.5.S-01-1-023 The drivers seemed to install as I was able to configure the network setting etc. But when I placed the drive back into the Tivo, it failed to boot and I have a blank screen. I also notice the green light at the front of the Tivo flashes occasionally. Placing the drive back into the PC in order to reattempt the cachecard driver install, I get this error Error - Unable to mount partition "dev/hdb7" (22) I understand from the info on screen that hdb7 is the active root partition. The bios indicates the Tivo Quantum drive is 40GB. I would appreciate any advice anyone could offer, as I broke the golden rule in not backing up the drive prior to the upgrade. Thank you.