USB flash disk a kernel 2.6.9

Mam tu takovy maly problem, nefunguje mi pod jadrem 2.6.9. USB flash disk. Pokud dam fdisk - l, tak to vypise:

Disk /dev/hda: 40.0 GB, 40007761920 bytes
240 heads, 63 sectors/track, 5168 cylinders
Units = cylinders of 15120 * 512 = 7741440 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/hda1   *           1        3844    29060608+   7  HPFS/NTFS
/dev/hda2            3845        4419     4347000   12  Compaq diagnostics
/dev/hda3            4420        4453      257040   82  Linux swap
/dev/hda4            4454        5168     5405400   83  Linux

Disk /dev/uba: 512 MB, 512483328 bytes
16 heads, 63 sectors/track, 993 cylinders
Units = cylinders of 1008 * 512 = 516096 bytes

   Device Boot      Start         End      Blocks   Id  System
/dev/uba1               1         992      499851+   6  FAT16

a kdyz chci namountovat /dev/uba1, tak to hlasi

mount: wrong fs type, bad option, bad superblock on /dev/uba1,
       or too many mounted file systems

Nevite, co delam spatne?

Dekuji moc za rady

Marty

Caf.

Neviem ci moje riesenie zodpoveda tvojmu, ale mal som podobny problem ako ty (myslim to hlasenie na konic). Na koniec som nasiel riesenie, ktore mi pomohlo. Aby si to nemusel hladat posielam navod podla ktoreho som postupoval ja a od vtedy vs. funguje.

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Google a Stefan Kluth muj problem vyresili. Prikladam Stefanuv postup, je tam vic uzitecnych veci. Pouze nenapsal, ze cfdisk je treba poustet s parametrem -z, aby ignoroval to, co je na disku a zacal s novou prazdnou tabulkou.

-> Hello All,

I have Linux lapkluth 2.4.17 #1 Fri Apr 11 14:54:56 CEST 2003 i686 unknownon a DELL i3700 laptop and have used USB flash memory keys (sticks) successfully before. I run usbmgr/hotplug to hopefully automatically detect devices and load kernel modules, which works with another USB memory stick. Now I have a apacer handy steno 2.0, a USB 2 compliant 256MB USB flash memory stick. The company claims "linux support".

First, the device is too new to be recognised by usbmgr/hotplug so I load the drivers by hand:

$ modprobe sd_mod

$ modprobe usb-storage

$ mount -t vfat /dev/sda1 /usbstick/

mount: block device /dev/sda1 is write-protected, mounting read-only

mount: wrong fs type, bad option, bad superblock on /dev/sda1,

or too many mounted file systems

An interesting bit of information comes from /proc/partitions:

$ cat /proc/partitions

major minor #blocks name

8 0 253952 sda

8 1 570754815 sda1

8 2 968014120 sda2

8 3 968014096 sda3

8 4 1818613248 sda4

It looks like the partition table is broken, the #blocks are far too large.

The other /proc entries like /proc/bus/usb and /proc/scsi look reasonable.

I have seen at least one similar error report somehwere else, but unfortunately no helpful reply ... perhaps somebody on this list knows how to understand this further?

the trick is to use brute force and replace the silly partition table of the USB flash drive by a sane one with cfdisk. I simply created a single primary FAT32 partition (0b), then walked to a WinXP machine to have it formatted.

Anyway, here is the sane partiton table:

$ fdisk -l /dev/sda

Disk /dev/sda: 8 heads, 62 sectors, 1024 cylinders

Units = cylinders of 496 * 512 bytes

Device Boot Start End Blocks Id System

/dev/sda1 1 1024 253921 b Win95 FAT32

I can now mount using this /etc/fstab entry:

/dev/sda1 /usbstick auto defaults,user,noauto 0 0

to znamena aby si pouzil cfdisk -z, zrusil to co tam je a potom vytvoril novu fat32 (jej cislo v tomto programe je 0b) + particiu + format podla navodu hore a bude to slapat.

Dufam ze ti to pomoze.

26.11.2004 08:23 Marty
Rozbalit Rozbalit vše Re: USB flash disk a kernel 2.6.9

Diky, zkusim to. Je hrozne, ze ti neco funguje pod jadrem 2.4.26 a pod jadrem 2.6.9 ne :)

Preji krasny den!

Marty

26.11.2004 09:07 Martin Zoubek
Rozbalit Rozbalit vše Re: USB flash disk a kernel 2.6.9

Jasně, tohle funguje. Jenže rada "přeformátuj disk, když nejde přečíst" je trošku ujetá. Mě lidi nosí flash disky téměř vždy za tím účelem, abych si z nich stáhnul data ;-)

Není problém v tom, že linux očekává partition table tam kde často nebývá?

Dotaz: USB flash disk a kernel 2.6.9

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