Re: [ts-7000] dd and 2GB SD cards

[Larry <>]

My first thought would be that using the bs=2048 option causes it to pad the last part
of the device contents to make the block 2048. This would, of course, make the file too big
and it wouldn't fit.

Also keep in mind that size can vary a little between makes - and I've seen it vary between runs
of the same make.

You can determine the exact size by:
fdisk /dev/sdb - use the option p to print details - then use q to quit without writing anything.

Larry

On 1/18/2012 5:24 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

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