Partitions of hard drive are not showing up in My Computer. Why?

Partitions of hard drive are not showing up in My Computer. Why? I have a desktop system in my office (config is pentium IV, 1 GB RAM, Windows XP SP3). I am trying to attach a second 250 GB hard disk to this system. The harddisk drive is detected in the BIOS and shows up in the device manager also. But it's partitions are not appearing in the My Computer.
Asked by: Guest \| Views: 328

Total answers/comments: 1

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Guest [Entry]

"Check if the previous system from where this 250GB NTFS partitioned drive comes
was updated up to Windows XP SP3 too.

You may also want to read up Moving Disks to a Different Computer
at the bottom of this Managing and Troubleshooting Desktop Storage article.

Did you try: 'Action' ==> 'Rescan Disks' yet?"