My secondary HDD is giving me error messages...

My secondary HDD is giving me error messages... "Plural you say... ""Yes!"
says I... This just seemed to happen one day. I went to access my second
HDD- which was formatted and had data on it, that I've been accessing for
more than a year now, without problems- it took forever to respond. I got an
message saying that the drive was not formatted and needed to be formatted.
Well since I had a recent back up - more than just luck, more takes a lot of
discipline, long story - I reformatted.

After I reformatted the drive I could access it, but for only a short while
before it gave me other error messages. Now I don't quite remember all the
sequent of events but I got error message that said:

- Can not read security data stream...

- Corrupt master disk...

By the way, this is my second drive (20 G), my first one is 30G and is
running Windows XP both drives are NTFS.

Hope I've been clear.

Thanks for any help that comes my way.

Thanks Brian