I had my USB flash drive running for a while. Recently I aborted a failed copy progress (due to FAT32 not working für 4GB+ file size). I guess this KO'ed my flash drive...
It won't show with fdisk or gparted. Other USB-devices work fine. Windows recognises how I insert the USB-device, but that's it. I can't see/reformat it. At least dmesg detects it as a mass storage device, so I have some hope.
However I am facing a wall right know. It seems the "usb-storage" module fails to "access" and "attach" the usb drive (e.g. as sdb1). Therefore it resets und disconnects.
Is it possible to format the flash drive while only knowing the plain bus/device number? (like 3 and 10 in /dev/bus/usb/003/010). Or is it possible to check why the usb access fails?
$ dmesg --raw
<6>[14216.906339] usb 3-2: new high-speed USB device number 10 using ehci-pci <6>[14217.063414] usb 3-2: New USB device found, idVendor=1f75, idProduct=0917 <6>[14217.063420] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3 <6>[14217.063423] usb 3-2: Product: USB 3.0 <6>[14217.063426] usb 3-2: Manufacturer: <6>[14217.063429] usb 3-2: SerialNumber: 201207229052 <6>[14217.063874] usb-storage 3-2:1.0: USB Mass Storage device detected <6>[14217.064193] scsi host6: usb-storage 3-2:1.0 <6>[14239.466420] usb 3-2: reset high-speed USB device number 10 using ehci-pci <6>[14556.111899] usb 3-2: USB disconnect, device number 10
T: Bus=03 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#= 10 Spd=480 MxCh= 0 D: Ver= 2.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS=64 #Cfgs= 1 P: Vendor=1f75 ProdID=0917 Rev=00.01 S: Manufacturer= S: Product=USB 3.0 S: SerialNumber=201207229052 C: #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=200mA I: If#= 0 Alt= 0 #EPs= 2 Cls=08(stor.) Sub=06 Prot=50 Driver=usb-storage