Corrupted data partition?

Hassio appears to indicate that the data partiontion is corrupted on boot. I was trying to fix this be putting the SD card in my PC to run fsck but I am running in to the following error…

$ sudo fsck.ext4 -vvvy /dev/sdb8
e2fsck 1.44.1 (24-Mar-2018)
fsck.ext4: Read-only file system while trying to open /dev/sdb8
Disk write-protected; use the -n option to do a read-only
check of the device.

is my card toast or is there something I need to be doing first?

Thanks,
Devan

Needed to mark the first partition (boot) as bootable.