sslug-teknik team mailing list archive

[Lasse Jensen <and0806@xxxxxxxx>]

Hej Group

Jeg kan ikke få adgang til mit  data...
har lige købt en stor USB 1.5Tb disk i aldi...
laver et filsystem med mkfs.ext4
kopiere mit data
sammenligner der hele med diff
alt ok

dagen efter skal jeg lige ha' lidt data ud af disken og over i en 
windows7 box jeg har, tænker at "DiskInternals Linux Reader" måske lige 
kan klare sagen, men desværre.
så prøver jeg Ext2fsd, men heller ikke dette tool kan få adgang til mit 
data. det skal nævnes at windows jo popper op med "ny disk indsat, skal 
den formateres" og naturligvis svare jeg NEJ TAK, og naturligvis sidder 
jeg ikke i 3 timer og fisker rundt med "DiskInternals Linux Reader" 
eller "Ext2fsd" i write mode, jeg går naturligvis forsigtigt tilværks.
men jeg ved ikke om der kan være gået noget galt under denne windows 
session.
men jeg skulle jo ha' noget af mit data over på denne windows box, og da 
jeg ikke direkte kan få dataen igennem USB til windows boxen må jeg jo 
mounte den under en linux og overføre mit data via net CIFS eller ligende.
men på min linux laptop kan jeg nu heller ikke få adgang til mit data...
PLEASE HJÆLP MIG ANYONE... jeg ved dataen ligger der...

Hilsen Lasse

her kommer en command historik...

root@foggy-HP-Pavilion-tx2000-Notebook-PC:~# dmesg
[ 3799.732055] usb 1-5: new high speed USB device using ehci_hcd and 
address 11
[ 3799.982905] scsi8 : usb-storage 1-5:1.0
[ 3812.498973] scsi 8:0:0:0: Direct-Access     WDC WD15 EARS-22MVWB0 
 51.0 PQ: 0 ANSI: 0
[ 3812.500306] sd 8:0:0:0: Attached scsi generic sg0 type 0
[ 3812.511018] sd 8:0:0:0: [sda] 2930277168 512-byte logical blocks: 
(1.50 TB/1.36 TiB)
[ 3812.514510] sd 8:0:0:0: [sda] Write Protect is off
[ 3812.514519] sd 8:0:0:0: [sda] Mode Sense: 23 00 00 00
[ 3812.514527] sd 8:0:0:0: [sda] Assuming drive cache: write through
[ 3812.518521] sd 8:0:0:0: [sda] Assuming drive cache: write through
[ 3812.518545]  sda: sda1
[ 3812.548502] sd 8:0:0:0: [sda] Assuming drive cache: write through
[ 3812.548518] sd 8:0:0:0: [sda] Attached SCSI disk
[ 3812.660984] sd 8:0:0:0: [sda] Sense Key : Recovered Error [current] 
[descriptor]
[ 3812.661003] Descriptor sense data with sense descriptors (in hex):
[ 3812.661009]         72 01 04 1d 00 00 00 0a 09 0c 00 00 00 00 00 07
[ 3812.661035]         00 00
[ 3812.661043] sd 8:0:0:0: [sda] ASC=0x4 ASCQ=0x1d

***

root@foggy-HP-Pavilion-tx2000-Notebook-PC:~# fdisk /dev/sda

WARNING: DOS-compatible mode is deprecated. It's strongly recommended to
         switch off the mode (command 'c') and change display units to
         sectors (command 'u').

Kommando (m for hjælp): p

Disk /dev/sda: 1500.3 Gb, 1500301910016 byte
255 heads, 63 sectors/track, 182401 cylinders
Units = cylindre of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x484516fa

    Enhed Opstart   Start         Slut     Blokke   Id  System
/dev/sda1               1      182401  1465136001   83  Linux

Kommando (m for hjælp):

***

root@foggy-HP-Pavilion-tx2000-Notebook-PC:~# mount /dev/sda1 /mnt/USB
mount: du skal angive filsystemtypen
root@foggy-HP-Pavilion-tx2000-Notebook-PC:~# mount -t ext4 /dev/sda1 
/mnt/USB
mount: wrong fs type, bad option, bad superblock on /dev/sda1,
       missing codepage or helper program, or other error
       I nogle tilfælde vil du finde nyttige oplysninger i systemlogggen
       - prøv 'dmesg | tail'  eller lignende

***

root@foggy-HP-Pavilion-tx2000-Notebook-PC:~# fsck.ext4 /dev/sda1
e2fsck 1.41.12 (17-May-2010)
fsck.ext4: Superblock invalid, trying backup blocks...
fsck.ext4: Bad magic number in super-block while trying to open /dev/sda1

The superblock could not be read or does not describe a correct ext2
filesystem.  If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>

***

root@foggy-HP-Pavilion-tx2000-Notebook-PC:~# mkfs.ext4 -n /dev/sda1
mke2fs 1.41.12 (17-May-2010)
Filesystem label=
OS type: Linux
Block size=4096 (log=2)
Fragment size=4096 (log=2)
Stride=0 blocks, Stripe width=0 blocks
91578368 inodes, 366284000 blocks
18314200 blocks (5.00%) reserved for the super user
First data block=0
Maximum filesystem blocks=0
11179 block groups
32768 blocks per group, 32768 fragments per group
8192 inodes per group
Superblock backups stored on blocks:
	32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
	4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,
	102400000, 214990848

***

root@foggy-HP-Pavilion-tx2000-Notebook-PC:~# fsck.ext4 -b 32768 /dev/sda1
e2fsck 1.41.12 (17-May-2010)
fsck.ext4: Bad magic number in super-block while trying to open /dev/sda1

The superblock could not be read or does not describe a correct ext2
filesystem.  If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>

***

root@foggy-HP-Pavilion-tx2000-Notebook-PC:~# fsck.ext4 -b 229376 /dev/sda1
e2fsck 1.41.12 (17-May-2010)
fsck.ext4: Bad magic number in super-block while trying to open /dev/sda1

The superblock could not be read or does not describe a correct ext2
filesystem.  If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
    e2fsck -b 8193 <device>