On 18 November 2011 16:58, Bryn Jones <bryn.jones1@???> wrote:
> Thanks Vic,
>
> I'm going to 'assume' you are right re SDHC (for now).
>
> All the kern.log reveals is -
> Nov 18 16:54:08 HP2 kernel: [135648.708306] usb 1-5: new high speed USB
> device using ehci_hcd and address 59
> Nov 18 16:54:08 HP2 kernel: [135648.849530] scsi27 : usb-storage 1-5:1.0
> Nov 18 16:54:09 HP2 kernel: [135649.849286] scsi 27:0:0:0: Direct-Access
> Single Flash Reader 1.00 PQ: 0 ANSI: 0
> Nov 18 16:54:09 HP2 kernel: [135649.851726] sd 27:0:0:0: Attached scsi
> generic sg1 type 0
> Nov 18 16:54:10 HP2 kernel: [135650.374744] sd 27:0:0:0: [sdb] 31090688
> 512-byte logical blocks: (15.9 GB/14.8 GiB)
> Nov 18 16:54:10 HP2 kernel: [135650.375604] sd 27:0:0:0: [sdb] Write Protect
> is on
> Nov 18 16:54:10 HP2 kernel: [135650.375622] sd 27:0:0:0: [sdb] Mode Sense:
> 03 00 80 00
> Nov 18 16:54:10 HP2 kernel: [135650.377610] sd 27:0:0:0: [sdb] No Caching
> mode page present
> Nov 18 16:54:10 HP2 kernel: [135650.377632] sd 27:0:0:0: [sdb] Assuming
> drive cache: write through
> Nov 18 16:54:10 HP2 kernel: [135650.386593] sd 27:0:0:0: [sdb] No Caching
> mode page present
> Nov 18 16:54:10 HP2 kernel: [135650.386612] sd 27:0:0:0: [sdb] Assuming
> drive cache: write through
> Nov 18 16:54:10 HP2 kernel: [135650.389249] sdb: sdb1
> Nov 18 16:54:10 HP2 kernel: [135650.396193] sd 27:0:0:0: [sdb] No Caching
> mode page present
> Nov 18 16:54:10 HP2 kernel: [135650.396219] sd 27:0:0:0: [sdb] Assuming
> drive cache: write through
> Nov 18 16:54:10 HP2 kernel: [135650.396243] sd 27:0:0:0: [sdb] Attached SCSI
> removable disk
>
> Out of which all I see of use is the write protected line (again not
> expert!).
>
> Any other thoughts?
>
> Cheers
> Bryn
>
A common failure mode for flash devices is to lock them in Read Only mode.
There is probably a fault on the SD card. I have seen the same thing
happen with USB memory sticks.
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