I'm on OpenSUSE Leap 42.2. Reading/writing data to a SD card is very slow. Therefore I decided to partition/format it to resolve the problem. I tried to partition with
sudo gdisk /dev/sdb but it cannot finish the job and returns
I tried to format the existing partition on SD card with
sudo mkfs /dev/sdb1 but it cannot finish operation.
Also I tried to run
sudo dd if=/dev/zero of=/dev/sdb but it runs into read/write errors.
I wonder if there is any other tool to partition/format/erase/whatever the SD card.