SD Card Reader for Raspberry Pi - DYNAMODE - CR-31 not working on a Windows PC

Question

Can anyone help please?

We purchased a DYNAMODE - CR-31 SD Card reader to use with a Raspberry Pi as recommended on the Farnell Web Site.

But in a windows PC (Vista or Windows 7) an 8GB or 32Gb SD card with a Raspberry Pi image shows as "No Media".Using the ext2fsd Software also shows "No Media"!

On a Linux PC it worked okay!

A new 32GB SD card with nothing on it worked okay on a Windows PC - Presumably because it was formatted as FAT32.

We have even had a second Card readr sent free of charge because Farnell Technical Support thought our first one was faulty. But the second one has the same issue.

I think, as per this web page, it could be due to SDHC:

http://www.raspberrypi.org/forums/viewtopic.php?t=60371

Can anyone help with how to use it for our 32GB (or 8GB) SD cards?

Thanks and Regards

Henry

rew · Answer

On A Linux machine (like a raspberry pi), you can just copy over all the files. Should be a lot quicker than to copy over the whole 32Gb. (in fact I did exactly that yesterday.... :-) ) (For most of the commands here you'll need to be root, so prefix them all with "sudo" or do "sudo -s" once....) To get this to work you need to partition the target SD card. Use any tool you like. Google for partitioning tools if necessary. On the other hand, if you have a bare "raspbian" system (and not based on noobs), your partition table is just the first block of the sd card, so: 
 dd if=/dev/mmcblk0 of=/dev/sda count=1 ; blockdev --rereadpt /dev/sda

will do the trick of copying the partition table of your running SD card to the one attached in an SD card reader. Next, format the partitions: 
 mkfs.vfat /dev/sda1 
 mkfs.ext4 /dev/sda2

Mount the partitions: 
 mount /dev/sda2 /mnt 
 mkdir /mnt/boot 
 mount /dev/sda1 /mnt/boot

and then copy over the files: apt-get isntall rsync rsync -avP --one-file-system / /mnt/ rsync -avP --one-file-system /boot/ /mnt/boot/ And that will leave you with a raspberry pi bootable image on the SD card that is accessible as sda.