Hello,
Actually this: [ 4375.765801] r592: IRQ: card added [ 4376.519845] memstick0: switching to 4-bit parallel mode [ 4376.523049] mspblk0: p1 means that card has been detected and now is accessible via /dev/mspblk0, and its first partition via /dev/mspblk0p1. If you run sudo fdisk /dev/mspblk0 you'll see all information. I decided to join the discussion, because I have two such cards. One is working flawlessly (as in the log above), and the second one looks like this: [ 4142.279105] r592: IRQ: card added [ 4142.279152] r592: IRQ: card added [ 4142.776095] r592: IRQ: card removed And there is no block device created for it, it doesn't exists in /dev tree, nor /sys/block, doesn't get symbolic name (something like mspblk...), BUT it's working flawlessly in handheld camera. I'd appreciate any comments or suggestions. Peter.