My System config is AMD Athlon XP 1800+, 128 MB RAM, HDD 40 GB.
HDD is Seagate ST340810A 40GB Hard Drive (Ultra ATA/100, 5,400 RPM, 2MB - MPN: ST340810A).
Please let me know whether I can install Seagate Free Agent Desktop 250 gb to my current system configuration without doing any system upgradation. Please also let me know with the installation of Seagate Free Agent Desktop 250 gb, the system will work without any problems.
Should have no problem with an external USB HD. I have a similar system, and added an internal Seagate 250 GB HD. My board manufacturer (ECS) on their website said that 250 was the largest size that would work, but evidently, if it will take a 250, it should take any size.
So, you should have no issues with any size HD, even a TB size.
Added: However, you would want to make sure that you have USB 2.0. If you are running with USB 1.1 ( I had to buy an internal 2.0 card, as my board only had 1.1), it will be slow as molasses, even slower that your 5400 RPM 40 GB HD.