[clug] cannot write to sd card

[Adrian]

Owen

sudo fdisk -l

Disk /dev/sda: 256.1 GB, 256060514304 bytes
255 heads, 63 sectors/track, 31130 cylinders, total 500118192 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x000f28d0

    Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048   493905919   246951936   83  Linux
/dev/sda2       493907966   500117503     3104769    5  Extended
/dev/sda5       493907968   500117503     3104768   82  Linux swap / Solaris

fdisk does not see it
  but
  ls -l /dev/sd*
brw-rw---- 1 root disk 8,  0 Nov 21 06:03 /dev/sda
brw-rw---- 1 root disk 8,  1 Nov 21 06:03 /dev/sda1
brw-rw---- 1 root disk 8,  2 Nov 21 06:03 /dev/sda2
brw-rw---- 1 root disk 8,  5 Nov 21 06:03 /dev/sda5
brw-rw---- 1 root disk 8, 16 Nov 21 06:04 /dev/sdb
brw-rw---- 1 root disk 8, 32 Nov 21 10:36 /dev/sdc

Adrian

On 21/11/13 10:21, Owen wrote:
>> Hi,
>>
>> I am puzzled. I have latest Ubuntu, a standard install.
>>
>> dmesg reports:
>>
>> [10677.639449] usb 1-3: Manufacturer: Generic
>> [10677.639454] usb 1-3: SerialNumber: 20071114173400000
>> [10677.645513] ums-realtek 1-3:1.0: USB Mass Storage device detected
>> [10677.657876] scsi8 : usb-storage 1-3:1.0
>> [10678.658846] scsi 8:0:0:0: Direct-Access     Generic- Multi-Card
>>    1.00 PQ: 0 ANSI: 0 CCS
>> [10678.665970] sd 8:0:0:0: Attached scsi generic sg3 type 0
>> [10684.830044] sd 8:0:0:0: [sdc] Attached SCSI removable disk
>>
>> so there is a device /dev/sdc, true ?
>>
>> sudo fdisk /dev/sdc
>> fdisk: unable to open /dev/sdc: No medium found
>>
>> but why?
>>
>> I wish to dd a file to the sd card
>
>
>
> Just a couple, and probably irrelevant questions;
>
> What is the output of  # sudo fdisk -l
> Is the little switch on the side of the card in the "write" position
>
>
>

-- 
Adrian Blake
101 Mulach St
Cooma
NSW, 2630
mobile 0407 232 978