I'm having problems with an external HDD having very slow read/write speeds.
The HDD is a 3TB Seagate, purchased a few months ago. I don't believe it has always had this problem, but I can't be 100% sure.
I get very very slow transfer speeds on it, roughly 1MB/s average. I have a number of other external HDDs connected to this machine (5 total, I think), and testing software shows that I get between 12MB/s and 20MB/s on those. I have tried changing ports, but with the same issue.
Any thoughts of what I can do that is non-destructive? The HDD is 90% full, and at the transfer speeds I'm getting, getting the content off will be tricky, plus I'm not even convinced I have enough space to store it.
NB - the computer is an old custom build desktop, running XP. The ports are all USB2. I believe the HDD is USB3 - are there any known issues with external HDDs downgrading from 3 to 2?