You could use something like FSArchiver to backup the individual /boot and / partitions (excluding ROMS). dd could be used for individual partitions, from a separate Linux system (/ shouldn't be active when dd is run). FSArchiver is included in the live boot System Rescue image, you can use it to restore/backup from a separate PC, without installing Linux on your PC.

Yeah tried. But still won't budge!

Tried win32 diskimager and it seems to be fine!

Etcher just doesn't like the pi img

Name it mysetup.img

If that fails, put it on a filepath with no spaces.

You need to copy the ROM folders contents to your PC or a USB stick, then transfer them over to the new image as you did initially. You might have to write your backup image back to the card in order to copy the ROMs.

@crookie333 yup i would say it is a bad card.

@Darix i would try sega cue maker. .ccd should work with it. Not sure about the other two. You can also try renaming it to .bin then running sega cue maker if it doesnt work the other way. Yes i know its a different format but i have gotten several games to work that way in the past.