Perhaps it should format ONLY the partition you have selected, or if you have selected the device, the whole device. Either way it should tell you what its about to do, and let you back out.
For example, if the partition list was:
/sdc
/sdc1
/sdc2
Pressing format with the first one selected will format the whole drive, where as selection either of the other two should just format that partition only.
Perhaps it should format ONLY the partition you have selected, or if you have selected the device, the whole device. Either way it should tell you what its about to do, and let you back out.
For example, if the partition list was:
/sdc
/sdc1
/sdc2
Pressing format with the first one selected will format the whole drive, where as selection either of the other two should just format that partition only.