A flash drive served as photo storage. The other was empty and worn. At one point I tried using the drive now called "disk2s2" as an external drive to host bootable OS X. I tried opening the Mac's boot drive layout instead of the default internal drive. which was broken at the time. Since then, however, I have not been able to make any progress in restoring his former abilities. The flash drives are not physically damaged as both have a red LED on the back of the USB case. They are also stored at room temperature. However, "disk2s2" is not properly deleted or mounted. I've repeatedly erased, done a "First Aid" and tried to mount the drive as well as recover from another working USB "32GB photos". However, the disc cannot be converted to another format when erasing (see screenshot of the error). Not sure if this is a USB or OS X issue (this should be cleared).
Samsung BAR Plus 128GB USB 3.1 Flash Drive - 400MB/s - Champagne Silver (MUF-128BE3/AM)
65 Review
Titan Gray Samsung BAR Plus 256GB USB 3.1 Flash Drive (MUF-256BE4/AM) with Up to 400MB/s Transfer Speed
69 Review
Kingston DataTraveler SE9 32GB USB 2.0 Flash Drive for Reliable Data Storage (DTSE9H/32GBZ)
69 Review
Kingston DataTraveler flash drive 100 G3 256 GB, 1 pc. black
74 Review
18 TB External HDD Western Digital WD Elements Desktop, USB 3.0, black
95 Review
2 TB External HDD Western Digital WD Elements Portable (WDBU), USB 3.0, black
84 Review
π Seagate Backup Plus Slim STHN2000400 2TB Portable Hard Drive - Black: Your Reliable External Storage Solution
93 Review
Game console Microsoft Xbox One X 1000 GB HDD, black
53 Review