It appears your SD card has probably lost too many sectors. Go get a brand new
2G SD card and try again. Also there is a utility that you might be interested
in: http://oss.digirati.com.br/f3/ This is a utility to test SD cards and in
particular tests them to see if they are counterfeits. Unfortunately
counterfeiting is rampant in these things, and the "no space left on device"
error can be symptomatic of a counterfeit device. Always purchase SD or
microSD cards from reputable sources, and be sure to run the F3 utility on any
new or unknown cards to be sure they really are what they say they are.
--- In "drex459" <> wrote:
>
> Thanks for the help Jeff!
>
> I'm not quite out of the woods just yet.
>
> I first used gunzip to unzip the file (2gbsd-latest.dd.gz), as you suggested,
> which left me with '2gbsd-latest.dd'.
> Then I used: "sudo dd if=2gbsd-latest.dd of=/dev/sdb bs=32k" (and also
> without the "bs=32k").
>
> But I keep getting the message: dd: writing to `/dev/sdb': No space left on
> device
>
> It is a 2GB micro-SD card, and this image from TS suggests it is meant for
> that size card, so I'm not sure why it's not working. Thoughts?
>
> Thanks!
>
>
> --- In "jeffs7283" <jeffs@> wrote:
> >
> >
> >
> > --- In "drex459" <dexterjagula@> wrote:
> > >
> > > I'm pretty new to working in UNIX, and have to do some development on the
> > > TS-8390-4700 board. Before I get started I have to use an image provided
> > > by TS. I need some help backing-up an existing micro SD card, and
> > > "dropping" an imagine onto the same micro-SD card.
> > >
> > > Here is a summary of what I have to do:
> > > 1. Back-up the existing micro-SD card (that came with the TS-8390-4700
> > > board).
> > > 2. "Drop" a downloaded image onto the micro-SD card.
> > > 3. If necessary, how to revert the micro-SD card to the backed-up image.
> > >
> > > Here's where I am, and what I still have to do:
> > > 1. Using the "sudo fdisk -l" command, I was able to see that the micro-SD
> > > card had a few partitions on it (/dev/sdb1, /dev/sdb2, /dev/sdb3,
> > > /dev/sdb4). I then used the command "sudo dd if=/dev/sdb of=sd.iso",
> > > which returned the following result:
> > > 3862528+0 records in
> > > 3862528+0 records out
> > > 1977614336 bytes (2.0 GB) copied, 505.756 s, 3.9 MB/s
> > > which looks like it got backed-up successfully to the .iso file. Is this
> > > the best way to back-up/image the micro-SD card, so that I can revert ALL
> > > files and partitions to the way it was?
> > >
> > > 2. The image I require is:
> > > "ftp://ftp.embeddedarm.com/ts-socket-macrocontrollers/ts-4800-linux/binaries/ts-images/2gbsd-latest.dd.gz";
> > > Once downloaded, how can I extract this image and "drop" it on the
> > > micro-SD card? Can I use the 'dd' utility to do this? Or some other
> > > utility? Do I have to format the micro-SD card first?
> > >
> > > 3. If I want to revert the micro-SD card back to the way it was before I
> > > "dropped" the image onto it, how do I do that using the .iso type (or any
> > > file type) using the 'dd' utility?
> > >
> > > These questions may seem basic, but any help would be greatly
> > > appreciated! Thanks in advance!
> > >
> >
> > So far I think you've got it. 'dd' is the right utility for doing straight
> > binary copy from one file/device to another. Since your card is showing up
> > on /dev/sdb, after step 1 above you now have the original card image backed
> > up in the sd.iso file. This includes the MBR on the card and can be used
> > to restore the card image by using dd again in exactly the same way: "dd
> > if=sd.iso of=/dev/sdb bs=32k" Setting the block size to 32k is a
> > performance enhancer when writing to the card.
> >
> > For (2), writing a downloaded image to the card, you must first gunzip the
> > downloaded file. Also note that you need to match the SD card size to the
> > image. Don't try to put an 8Gb image on a 2 gig card and vice versa. Then
> > it's just "dd if=<downloaded unzipped image> of=/dev/sdb bs=32k" to load
> > it on the card. Note that it takes a loooooong time to write to an SD card
> > this way, so be patient. Since you are writing a complete filesystem image
> > to the card including the MBR there is no formatting necessary. Just plug
> > in a card and go.
> >
> > For (3) see step one above, just write your original sd.iso image back onto
> > the card with dd.
> >
> > Things to remember:
> >
> > dd is a very low level operation, no formatting or partitioning of a card
> > is necessary to use it.
> >
> > Use the block size (bs=32k) parameter to improve performance when writing
> > to sd cards. Leave this off when saving image from the card to disk.
> >
> > Match downloaded binary image size to card size. Note that the downloaded
> > binary image is usually about 10% smaller than the size of the card in
> > order to allow for the size of the card to shrink slightly over time due to
> > sectors wearing out.
> >
> > Be sure to unzip downloaded images prior to writing to SD card.
> >
> > -Jeff
> >
>
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