I too have seen this problem. You (TS, that is) may leave some room, but
not enough in my experience. I wound up fdisking the new card, DD'ing
the initrd and kernel partitions, then doing a file-by-file copy for the
others.
In one case I wound up editing sector 0 by hand - this is not pretty :-( .
You can mount the disk image on the host machine using losetup to get at
the files to copy.
As an aside, the partition setup in your distributions seems weird - all
the partition utilities I've used complain about partitions not starting
or ending on normal boundaries. It works though.
Regards,
Jim Ham
Porcine Associates LLC
Mark Featherston wrote:
>
>
> Don,
>
> SD cards vary slightly from card to card. For example, I have 3
> different brands of SD cards here that each say 2GB. However according
> to fdisk:
> ATP Industrial Grade - 2058 MB, 2058354688 bytes
> A-Data Speedy SD - 2013 MB, 2013265920 bytes
> Sandisk SD - 1977 MB, 1977614336 bytes
>
> From our experience with SD cards there can be up to a 10% difference
> in actual usable disk size even though they are labeled for a specific
> size. All of our software images take this into account and leave a
> portion of the disk unallocated.
>
> Best Regards,
> ________________________________________________________________
> Mark Featherston, Technologic Systems | voice: (480) 837-5200
> 16525 East Laser Drive | fax: (480) 837-5300
> Fountain Hills, AZ 85268 | web:www.embeddedARM.com
>
>
> On 01/18/2012 03:24 PM, dtucker wrote:
>>
>> I recently went to make a backup of my 2GB SD card used as the Debian file
>> system for my TS-7260.
>>
>> dd if=/dev/sdb of=backupfile.dd bs=2048
>>
>> The resulting file was 1977614336 bytes. I then attempted to write
>> this image
>> to a new 2GB SD card.
>>
>> dd if=backupfile.dd of=/dev/sdb bs=2048
>>
>> I received the following error:
>> dd: writing to `/dev/sdb': No space left on device
>> 3842049+0 records in
>> 3842048+0 records out
>> 1967128576 bytes (2.0 GB) copied, 1950.22 s, 1.0 MB/s
>>
>> Why wouldn't the image fit on a new SD card if it could fit on the one
>> I copied
>> it from?
>>
>> Don
>>
>
>
>
>
> No virus found in this message.
> Checked by AVG - www.avg.com <http://www.avg.com>
> Version: 2012.0.1901 / Virus Database: 2109/4751 - Release Date: 01/18/12
>
--
Porcine Associates LLC
244 O'Connor St.
Menlo Park, CA 94025
USA
+1(650)326-2669 fax +1(650)326-1071
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