Did I get an RL01 pack instead of RL02?

J Blaser wrote: Did a couple of quick tests with these results: RL02K cart in RL01 drive: - spins up okay, and READY lights up - using RT11, a DIR produces: ?DIR-F-Error reading directory[1] RL01K cart in RL02 drive: - spins up okay, and READY lights up - using RT11, a DIR produces a full directory listing just fine![2] So, if the OP is not seeing the READY light, then the cart is probably not formatted for DEC equipment, as Al suggested. I'm not sure that there is any way to make that cart DEC compatible, since DEC formatted these RL carts at the factory, and as I understand it, there is no field formatter, nor is the drive capable of doing a format in the first place. - Jared [1] I haven't calculated, but probably because the directory 'spills' over into unexpected blocks at the end of the 'expected' RL01 directory segment. [2] Looks okay, but then once the head seeks past track 0, we'd be doomed! Tracks on the RL02K carts are twice as narrow as those on the RL01K carts and the RL01 drive would skip the physical track 1 and try to use track 2, thinking it is track 1.