So I looked at the dd manpage. The dd of the Cubietruck image to mSD reports: 3072+0 records in 3072+0 records out 3221225472 bytes (3.2 GB) copied, 363.872 s, 8.9 MB/s So it would seem the following should work, given that I have not changed the partition size(s): dd if=/dev/sdb of=base.img count=3072 bs=1M On 12/29/2015 05:46 AM, Robert Moskowitz wrote: > > > On 12/29/2015 12:49 AM, Mandar Joshi wrote: >>> Can some one point me to where I can find how to do this? >>> >> If you are talking about the time it takes to write an image to a >> card, I think you should be looking at the block size option with dd. >> dd if=image.img of=/dev/sdb bs=1M > > And how do I go the other way that only takes to the end of sdb3, not > the whole card? > >> I use 1M because it works flawlessly with my card writer. I had done a >> google search for it and found a recommendation of 4k. But 1M works >> for me, so I've stuck to 1M for now. >> >> >> Regards >> Mandar Joshi >> _______________________________________________ >> Arm-dev mailing list >> Arm-dev at centos.org >> https://lists.centos.org/mailman/listinfo/arm-dev >> > > _______________________________________________ > Arm-dev mailing list > Arm-dev at centos.org > https://lists.centos.org/mailman/listinfo/arm-dev >