On Sun, 2 Sep 2012, Alon Bar-Lev wrote: > Attached usbmon, I hope I've done this OK. The errors start here: > ffff880112a12d80 3034504955 S Bo:2:009:2 -115 31 = 55534243 0a000000 00100000 80000a28 00000000 00000008 00000000 000000 > ffff880112a12d80 3034505013 C Bo:2:009:2 0 31 > > ffff880132074d80 3034505019 S Bi:2:009:1 -115 4096 < > ffff880132074d80 3034505155 C Bi:2:009:1 -32 0 > ffff880112a12d80 3034505161 S Co:2:009:0 s 02 01 0000 0081 0000 0 > ffff880112a12d80 3034505298 C Co:2:009:0 0 0 > ffff880112a12d80 3034505308 S Bi:2:009:1 -115 13 < > ffff880112a12d80 3034505441 C Bi:2:009:1 0 13 = 55534253 0a000000 00000000 02 This shows the computer asking the drive to read 8 blocks starting at block 0. The drive (actually the JMicron USB interface, not the drive itself) returns an error code indicating that it thinks the command was not sent properly -- even though it was. I don't understand why the JMicron unit doesn't accept this command. It simply appears to be broken. Does it work if you plug it into a computer running Windows or Mac OS X? Alan Stern -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
