read only SD card

Colin Law clanlaw at gmail.com
Sun May 11 11:14:45 UTC 2014


On 11 May 2014 11:28, Gary J. Kirkpatrick <garyartista at gmail.com> wrote:
> ...
> Here is the output after I inserted the card:
>
> [21527.842962] usb 1-1.5: new high-speed USB device number 15 using ehci-pci
> [21527.951045] usb 1-1.5: New USB device found, idVendor=0bda,
> idProduct=0158
> [21527.951054] usb 1-1.5: New USB device strings: Mfr=1, Product=2,
> SerialNumber=3
> [21527.951059] usb 1-1.5: Product: USB2.0-CRW
> [21527.951063] usb 1-1.5: Manufacturer: Generic
> [21527.951066] usb 1-1.5: SerialNumber: 20071114173400000
> [21527.956466] ums-realtek 1-1.5:1.0: USB Mass Storage device detected
> [21527.969498] scsi17 : usb-storage 1-1.5:1.0
> [21528.969766] scsi 17:0:0:0: Direct-Access     Generic- Multi-Card
> 1.00 PQ: 0 ANSI: 0 CCS
> [21528.970111] sd 17:0:0:0: Attached scsi generic sg1 type 0
> [21529.685584] sd 17:0:0:0: [sda] 7829504 512-byte logical blocks: (4.00
> GB/3.73 GiB)
> [21529.687528] sd 17:0:0:0: [sda] Write Protect is on

Well I am sure that is the problem.  What happens if you repeat,
plugging it in with the switch in alternate positions?

> [21529.687537] sd 17:0:0:0: [sda] Mode Sense: 03 00 80 00
> [21529.689092] sd 17:0:0:0: [sda] No Caching mode page found
> [21529.689096] sd 17:0:0:0: [sda] Assuming drive cache: write through
> [21529.696107] sd 17:0:0:0: [sda] No Caching mode page found
> [21529.696114] sd 17:0:0:0: [sda] Assuming drive cache: write through
> [21529.697174]  sda: sda1
> [21529.702793] sd 17:0:0:0: [sda] No Caching mode page found
> [21529.702800] sd 17:0:0:0: [sda] Assuming drive cache: write through
> [21529.702805] sd 17:0:0:0: [sda] Attached SCSI removable disk
> [21532.102312] systemd-hostnamed[14798]: Warning: nss-myhostname is not
> installed. Changing the local hostname might make it unresolveable. Please
> install nss-myhostname!

I don't think that is likely to cause the problem you are seeing,
though I don't really know.

>
>
> It says write protect is on, but it is not on the card itself.
>
> Gary14 has no permissions at all.  'Me' has all the permissions.

As long as the owner is you (Me) and you have full permission that should be ok.

Colin




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