On Friday 04 Jan 2013 19:12:18 Nikos Chantziaras wrote: > On 04/01/13 18:32, Mick wrote: > > I was trying to zero out a USB stick and at some point it seems to have > > locked itself up. By that I mean that for all intends and purposes I > > cannot write to it in any conceivable way. > > Can you elaborate on that? Do you get any error messages from dd or in > dmesg?
dd if=/dev/zero of=/mnt/iso/bigfile.txt bs=512 dd: writing ‘/mnt/iso/bigfile.txt’: Input/output error 376705+0 records in 376704+0 records out 192872448 bytes (193 MB) copied, 1.01944 s, 189 MB/s rm /mnt/iso/bigfile.txt rm: cannot remove ‘/mnt/iso/bigfile.txt’: Read-only file system The output of mount: /dev/sdb1 on /mnt/iso type vfat (rw) (was mounted rw as root just in case). This is what dmesg shows: hub 2-1:1.0: state 7 ports 8 chg 0000 evt 0002 hub 2-1:1.0: port 1, status 0101, change 0001, 12 Mb/s hub 2-1:1.0: debounce: port 1: total 100ms stable 100ms status 0x101 hub 2-1:1.0: port 1 not reset yet, waiting 10ms usb 2-1.1: new high-speed USB device number 8 using ehci_hcd hub 2-1:1.0: port 1 not reset yet, waiting 10ms usb 2-1.1: default language 0x0409 usb 2-1.1: udev 8, busnum 2, minor = 135 usb 2-1.1: New USB device found, idVendor=1307, idProduct=0163 usb 2-1.1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 2-1.1: Product: USB Mass Storage Device usb 2-1.1: Manufacturer: USBest Technology usb 2-1.1: SerialNumber: 08032204c2f5fd usb 2-1.1: usb_probe_device usb 2-1.1: configuration #1 chosen from 1 choice usb 2-1.1: adding 2-1.1:1.0 (config #1, interface 0) usb-storage 2-1.1:1.0: usb_probe_interface usb-storage 2-1.1:1.0: usb_probe_interface - got id scsi10 : usb-storage 2-1.1:1.0 scsi 10:0:0:0: Direct-Access Ut163 USB2FlashStorage 0.00 PQ: 0 ANSI: 2 sd 10:0:0:0: Attached scsi generic sg2 type 0 sd 10:0:0:0: [sdb] 1974271 512-byte logical blocks: (1.01 GB/963 MiB) sd 10:0:0:0: [sdb] Write Protect is off sd 10:0:0:0: [sdb] Mode Sense: 00 00 00 00 sd 10:0:0:0: [sdb] Asking for cache data failed sd 10:0:0:0: [sdb] Assuming drive cache: write through sd 10:0:0:0: [sdb] Asking for cache data failed sd 10:0:0:0: [sdb] Assuming drive cache: write through sdb: sdb1 sd 10:0:0:0: [sdb] Asking for cache data failed sd 10:0:0:0: [sdb] Assuming drive cache: write through sd 10:0:0:0: [sdb] Attached SCSI removable disk I can't recall the hdparm errors (run it on a different box) but if important I can get these for you. Thanks. -- Regards, Mick
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