For XP OS, another safer way and less encumbering method for the esata to be recognized and incorporated into your system is to do the following:
1) Go to Device Manager
2) Click Disk Drives
3) Scan for Hardware Changes, your'e esata connection will now be visible.
For precautionary measures as to not upset your registry, to safely remove it, the same steps 1-2...but afterward, right click on the esata drive(I'm sure you'll know either WDC or ST for Seagate), then click uninstall..otherwise, on reboot, the PC might hang looking for the esata drive.
So no more reboot....enjoy fast transfer now even with XP as an OS.