This is really nerve-cracking. In one PC, my USB drive's dmesg output is: sd 2:0:0:0: [sdd] 312581808 512-byte hardware sectors (160042 MB) sd 2:0:0:0: [sdd] Write Protect is off sd 2:0:0:0: [sdd] Mode Sense: 00 00 00 00 sd 2:0:0:0: [sdd] Assuming drive cache: write through sd 2:0:0:0: [sdd] 312581808 512-byte hardware sectors (160042 MB) sd 2:0:0:0: [sdd] Write Protect is off sd 2:0:0:0: [sdd] Mode Sense: 00 00 00 00 sd 2:0:0:0: [sdd] Assuming drive cache: write through sdd: sdd1 sdd2 sdd3 < sdd5 > sdd4 sd 2:0:0:0: [sdd] Attached SCSI disk But in another PC, the output is (just the relevant entry): "Write Protect is on". Why? Because of this write protect, I cannot mount it as read-writable. Thanks. -- Regards, Peter Teoh -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ