Damaged Flash Drive - CHKDSK finds nothing in General Posted May 1, 2018 Agree with Christopher on USB flash drives - they are really only reliable enough for transporting data temporarily, and if you value that data you should always have it mirrored elsewhere. Think of them like Dixie paper cups, compared to a strong aluminum camping thermos which is a good solid enterprise drive. Now step on each. There's a difference in durability. Since you're already seeing errors from it (random ones non-withstanding), I'd say it isn't long for this world. Especially if it's subjected to ~24 hours worth of tests. Replace when able!