co-worker had this 'installed' on his machine

he wiped his machine and reinstalled the os

Opens on “safely remove hardware” but doesn’t show as a drive
Unallocated drive

any suggestions?

i have a feeling, and this is right out of my elbow, that he enabled some type of security and it wrote sometype of encription key on his machine and when he wiped it the drive is looking for that key

thanks in advance!