I am working in a laboratory that needs to format an SD card with two partitions. I formatted the SD card, discovered it as sde1 and then ran
sudo umount /dev/sde1 before running:
sudo sfdisk /dev/sde1 << EOF > 1,,0xE,* > EOF
I got the following error:
Checking that no-one is using this disk right now ... FAILED This disk is currently in use - repartitioning is probably a bad idea. Umount all file systems, and swapoff all swap partitions on this disk. Use the --no-reread flag to suppress this check. sfdisk: Use the --force flag to overrule all checks.
I have no idea where to go from here. I am new to this too. I had read that I needed to disable automatic mounting in Ubuntu and I used
gsettings set org.gnome.desktop.media-handling automount false That had no effect. I would still get the previous error. Please help.