cloning / mirroring external hard drive

[subaryan]

could somebody suggest if this mirroring of seagate external usb 250 portable drive is possible??
immediate problem is that i cannot recover data from the disk which is only a year old with only single partition. the disk comes on the file explorer after a while and i cannot access the data directly.

[pip22]

If you can't access the drive (if that's what you are saying), a disk-imaging program would also have the same problem.

But if you already have the required software it would do no harm to try, though I would try doing it outside of Windows if you have a bootable CD which runs the disk-imaging software. That will stop Windows getting in the way of the process.