Re: Recuperar un disck

[David Escala <descala@gmail.com>]

hola,

el primer que es fa en aquests casos es fer una imatge del disc 
defectuós i després treballar sobre la imatge, no sobre el disc 
original. és a dir: fer un "dd" i després utilitzar eines com el testdik 
sobre el fitxer que ha generat el dd.

"ddrescue" va molt bé per llegir sectors defectuosos i generar una 
imatge del disc. el paquet debian es diu "gddrescue". seria algo així:

 ddrescue /dev/sdb imatge-de-sdb.dd

on /dev/sdb es el dispositiu del disc vell.

d.


On 07/19/2013 05:25 PM, Griera wrote:
> Hola:
>
> Has prova amb "testdisk" que està a debian? És molt lent, però a mi m'ha recuperat el disc dur en dos ocasions.
>
> Salut!
>
>
> On Fri, 19 Jul 2013 10:34:29 +0000
> Pere Nubiola Radigales<pere@nubiola.cat>  wrote:
>
> > Fa uns dies s'em va espatllar el disc. Donat que el ordinador era una mica
> > vell en vaig compraun de nou , al que vaig installar el el disc vell per
> > intentar recuperar dades.
> > Quant uintento montar el disc vell em dona els eguent dmesg
> >
> > [22611.547157] ata4.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
> > [22611.547162] ata4.00: BMDMA stat 0x24
> > [22611.547166] ata4.00: failed command: READ DMA EXT
> > [22611.547172] ata4.00: cmd 25/00:08:8a:8a:b1/00:00:3a:00:00/e0 tag 0 dma
> > 4096 in
> > [22611.547172]          res 71/04:04:9d:00:32/04:00:00:00:00/e0 Emask 0x1
> > (device error)
> > [22611.547175] ata4.00: status: { DRDY DF ERR }
> > [22611.547177] ata4.00: error: { ABRT }
> > [22611.600951] ata4.00: both IDENTIFYs aborted, assuming NODEV
> > [22611.600956] ata4.00: revalidation failed (errno=-2)
> > [22611.600966] ata4: soft resetting link
> > [22611.772763] ata4.00: both IDENTIFYs aborted, assuming NODEV
> > [22611.772776] ata4.00: revalidation failed (errno=-2)
> > [22616.751914] ata4: soft resetting link
> > [22616.939780] ata4.00: both IDENTIFYs aborted, assuming NODEV
> > [22616.939793] ata4.00: revalidation failed (errno=-2)
> > [22616.939797] ata4.00: disabled
> > [22616.939814] ata4: EH complete
> > [22616.939836] sd 3:0:0:0: [sdb] Unhandled error code
> > [22616.939839] sd 3:0:0:0: [sdb]
> > [22616.939841] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
> > [22616.939843] sd 3:0:0:0: [sdb] CDB:
> > [22616.939845] Read(10): 28 00 3a b1 8a 8a 00 00 08 00
> > [22616.939854] end_request: I/O error, dev sdb, sector 984713866
> > [22616.939870] sd 3:0:0:0: [sdb] Unhandled error code
> > [22616.939872] sd 3:0:0:0: [sdb]
> > [22616.939874] Result: hostbyte=DID_BAD_TARGET driverbyte=DRIVER_OK
> > [22616.939876] sd 3:0:0:0: [sdb] CDB:
> > [22616.939877] Read(10): 28 00 3a b1 8a 92 00 00 f0 00
> > [22616.939884] end_request: I/O error, dev sdb, sector 984713874
> > [22616.939887] JBD: Failed to read block at offset 93
> > [22616.939929] JBD: recovery failed
> > [22616.939931] EXT3-fs (sdb3): error loading journal
> >
> > La commanda smartctl --all -T verypermissive /dev/sdb em torna
> >
> > smartctl 6.2 2013-04-20 r3812 [x86_64-linux-3.9-1-amd64] (local build)
> > Copyright (C) 2002-13, Bruce Allen, Christian Franke, www.smartmontools.org
> >
> > === START OF INFORMATION SECTION ===
> > Vendor:               /3:0:0:0
> > Product:
> > User Capacity:        600,332,565,813,390,450 bytes [600 PB]
> > Logical block size:   774843950 bytes
> > scsiModePageOffset: response length too short, resp_len=47 offset=50
> > bd_len=46
> > scsiModePageOffset: response length too short, resp_len=47 offset=50
> > bd_len=46
> > > > Terminate command early due to bad response to IEC mode page
> > === START OF READ SMART DATA SECTION ===
> > Log Sense failed, IE page [scsi response fails sanity test]
> > Error Counter logging not supported
> >
> > scsiModePageOffset: response length too short, resp_len=47 offset=50
> > bd_len=46
> > Device does not support Self Test logging
> >
> >
> > He trobat aixo:
> > https://groups.google.com/forum/#!msg/de.comp.os.unix.linux.hardware/okXwhnwvxQs/gQafyYebquQJ
> >
> > Pero está en Aleman. veig que fa un dd peró no veig d'on obté les dades
> >
> > Algú em pot ajudar
> >
> >
> >
> >
> > Pere Nubiola Radigales
> > Telf: +34 656316974
> > e-mail: pere@nubiola.cat
> >             pnubiola@fsfe.org
> >             pere.nubiola@gmail.com