Comment 55 for bug 17881

There are a number of issues related to USB flash drives discussed in #61235.
These suggest that you have to adjust the max_sectors parameter for your drive: the suggestion was to reduce from 240 to 128. There are other parameters discussed there that may also help.

On my copy test for my flash drive, 128 was still giving errors and I had to reduce max_sectors to only 32.
However, the copy time doesn't seem too bad.

I'm going to try and mark this thread as a duplicate of 61235.