I have a very old Lacie portable hard drive that I use for my Roku streamer. The Roku is claiming that two of the mp4 files are corrupted. My PC agrees. I tried to copy over replacement files, but the copying process is very slow indeed (355 KB/s some of the time.
I cannot see how two files can suddenly become corrupted in what is essentially a read-only device. I am wondering if the portable hard drive could be on its way out and if I should get a SSD instead, now that they are fairly cheap.