Am Freitag, 7. September 2012 schrieb Klaus Pieper: > Hello debian gurus, > is it possible to recover anything from this flash card? > Klaus > > [ 1008.061896] scsi 6:0:0:0: Direct-Access SanDisk SDDR-113 > 9412 PQ: 0 ANSI: 0 > [ 1008.063822] sd 6:0:0:0: Attached scsi generic sg2 type 0 > [ 1008.196914] sd 6:0:0:0: [sdb] 7744512 512-byte logical blocks: (3.96 > GB/3.69 GiB) > [ 1008.198130] sd 6:0:0:0: [sdb] Write Protect is off > [ 1008.198138] sd 6:0:0:0: [sdb] Mode Sense: 03 00 00 00 > [ 1008.198143] sd 6:0:0:0: [sdb] Assuming drive cache: write through > [ 1008.201240] sd 6:0:0:0: [sdb] Assuming drive cache: write through > [ 1008.201249] sdb: > [ 1012.889494] sd 6:0:0:0: [sdb] Device not ready > [ 1012.889502] sd 6:0:0:0: [sdb] Result: hostbyte=DID_OK > driverbyte=DRIVER_SENSE > [ 1012.889510] sd 6:0:0:0: [sdb] Sense Key : Not Ready [current] > [ 1012.889519] sd 6:0:0:0: [sdb] Add. Sense: Medium not present > [ 1012.889530] sd 6:0:0:0: [sdb] CDB: Read(10): 28 00 00 00 00 00 00 00 > 08 00 > [ 1012.889549] end_request: I/O error, dev sdb, sector 0 > > > # sfdisk -l /dev/sdb > /dev/sdb: No medium found > > sfdisk: cannot open /dev/sdb for reading
As told on debian-user-german: I think this card is physically damaged. Likely the controller is defective. But could be contacts, flash chips or something else as well. But to make sure I still suggest trying some different card readers with it. photorec is only of use if you can access the partition. Thats unlikely in above case as sector 0 can not be read. Had something like this with a TakeMS 4GB card. I had it recovered by a data rescue company for 170 euro. Well I wanted that six months of photos back. Backup SD cards. Regularily! Even when you do not have time to sort photos into folders properly. Just backup by rsync or so anyway and sort photos later. Thats what I learned from this. More about cheap flash thats often optimized for FAT 32 on Linux: Optimizing Linux with cheap flash drives February 18, 2011 This article was contributed by Arnd Bergmann https://lwn.net/Articles/428584/ https://wiki.linaro.org/WorkingGroups/Kernel/Projects/FlashDeviceMapper https://wiki.linaro.org/WorkingGroups/Kernel/Projects/FlashCardSurvey I hope that there will be a free filesystem for exchangable media available on every OS sometime. There are at least two initiatives for Linux. Lanyard filesystem and a flash company working on a flash fs prototype mentioned by Arnd in the lanyard FS thread on linux kernel mailing list. Another thing would be to bring such a filesystem to Windows and Linux. I think a patent-free filesystem is called for. So Exfat doesn´t seem to be a real alternative. Or maybe Theodore T´so has it right that at some time an existing Linux filesystem will be used due to the market share of Linux in mobile devices. Still then Ext4 / BTRFS may need some adaptions to how cheap flash works. Ciao, -- Martin 'Helios' Steigerwald - http://www.Lichtvoll.de GPG: 03B0 0D6C 0040 0710 4AFA B82F 991B EAAC A599 84C7 -- To UNSUBSCRIBE, email to debian-user-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org Archive: http://lists.debian.org/201209081807.00131.mar...@lichtvoll.de
