2nd Drive Problem

My problem is this:
I have 2 hard drives installed on windows xp and i decided to reformat my main © drive. I did everything right, and reinstalled my operating system and plugged in my 2nd drive and suddenly it wont read. It says i need to format it, but i know it was formatted before to fit the operating system. The drive is NTFS with a partition for storage. I want to be able to format it without losing any of the data on it (all my stuff was backed onto it). Any help would be much appreciated.

Can’t you just transfer the data from the second drive to the first, format it then transfer it back?

no i cant access the drive at all