PIZZA Man said:
Does really nobody even have a guess? Do you think my USB ports are underpowered? How would I check to see if they were?
PIZZA Man, I stumbled across your post looking for a similar answer (my external Seagate drive has been doing the same thing and driving me nuts). The previous poster's comment about sleep time got me thinking, so I went into Seagate Manager to play with the settings.
Under "My Drives", "settings" button, I clicked on ""Adjust Power Settings"
The options here appear to regulate the drive going into power saving mode. I can't confirm this is the root cause of the issue we are both experiencing, but it seems highly probable. I changed the power-saving mode frequency to "Never" and will keep an eye on it to see if it resolves the issue - you might want to try the same
Hope this helps,