битая флэшка?

dmesg пишет:
[ 893.422380] usb 6-5: new high speed USB device using ehci_hcd and address 6
[ 893.507420] usb 6-5: configuration #1 chosen from 1 choice
[ 893.582222] usbcore: registered new interface driver libusual
[ 893.599425] Initializing USB Mass Storage driver...
[ 893.608220] scsi4 : SCSI emulation for USB Mass Storage devices
[ 893.609418] usbcore: registered new interface driver usb-storage
[ 893.609427] USB Mass Storage support registered.
[ 893.609548] usb-storage: device found at 6
[ 893.609550] usb-storage: waiting for device to settle before scanning
[ 895.710437] usb-storage: device scan complete
[ 895.710741] scsi 4:0:0:0: Direct-Access Generic USB Flash Disk 7.76 PQ: 0 ANSI: 2
[ 895.712430] sd 4:0:0:0: [sdb] Attached SCSI removable disk
[ 895.712479] sd 4:0:0:0: Attached scsi generic sg1 type 0
[ 948.933226] usb 5-1: USB disconnect, address 2
[ 948.935813] atkbd.c: Unknown key pressed (translated set 2, code 0xe2 on isa0060/serio0).
[ 948.935820] atkbd.c: Use 'setkeycodes e062 <keycode>' to make it known.
[ 948.936321] atkbd.c: Unknown key released (translated set 2, code 0xe2 on isa0060/serio0).
[ 948.936326] atkbd.c: Use 'setkeycodes e062 <keycode>' to make it known.
[ 948.936672] atkbd.c: Unknown key pressed (translated set 2, code 0xf6 on isa0060/serio0).
[ 948.936677] atkbd.c: Use 'setkeycodes e076 <keycode>' to make it known.
[ 948.937187] atkbd.c: Unknown key released (translated set 2, code 0xf6 on isa0060/serio0).
[ 948.937191] atkbd.c: Use 'setkeycodes e076 <keycode>' to make it known.
[ 1000.438329] usb 6-5: USB disconnect, address 6
[ 1003.117132] usb 6-5: new high speed USB device using ehci_hcd and address 7
[ 1003.202090] usb 6-5: configuration #1 chosen from 1 choice
[ 1003.204298] scsi5 : SCSI emulation for USB Mass Storage devices
[ 1003.204440] usb-storage: device found at 7
[ 1003.204442] usb-storage: waiting for device to settle before scanning
[ 1005.306463] usb-storage: device scan complete
[ 1005.306876] scsi 5:0:0:0: Direct-Access Generic USB Flash Disk 7.76 PQ: 0 ANSI: 2
[ 1005.308010] sd 5:0:0:0: [sdb] Attached SCSI removable disk
[ 1005.308053] sd 5:0:0:0: Attached scsi generic sg1 type 0

при попытке mkfs или fdisk "Unable to open и No medium found"