i get this on dmesg :
scsi 4:0:0:0: Direct-Access WD My Book 1028 PQ: 0 ANSI: 4
sd 4:0:0:0: [sdc] 976773168 512-byte hardware sectors (500108 MB)
sd 4:0:0:0: [sdc] Write Protect is off
sd 4:0:0:0: [sdc] Mode Sense: 10 00 00 00
sd 4:0:0:0: [sdc] Assuming drive cache: write through
sd 4:0:0:0: [sdc] 976773168 512-byte hardware sectors (500108 MB)
sd 4:0:0:0: [sdc] Write Protect is off
sd 4:0:0:0: [sdc] Mode Sense: 10 00 00 00
sd 4:0:0:0: [sdc] Assuming drive cache: write through
sdc: sdc1
sd 4:0:0:0: [sdc] Attached SCSI disk
sd 4:0:0:0: Attached scsi generic sg2 type 0
usb-storage: device scan complete
usb 1-1.7: USB disconnect, address 6
usb 1-1.7: new high speed USB device using ehci_marvell and address 7
usb 1-1.7: configuration #1 chosen from 1 choice
scsi5 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 7
usb-storage: waiting for device to settle before scanning
input: Western Digital My Book as /class/input/input1
chmod 777 /media/500gb gives me thischmod 777 /media/500gb/
chmod: changing permissions of `/media/500gb/': Read-only file system
maybe i need to format this drive