Please Help

[SandraHope]

I have been experiencing severe lag on my pc. I have a Maxtor 320Gig hard drive, but for some odd reason, it is only showing like 48.8Gig and I have less than 5 Gig available hard drive space, which I am sure is accounting for my severe hard drive lag. How do I solve this problem? Everything else seems to be working fine. I just went into the BIOS setting and here's what I found:
1st Slave - WDC WD3200JS-60PDBO
2nd Master - Maxtor - STM3320620AS
This pc came with two 320Gig hard drives. Apparently when it was repaired awhile ago, someone replaced the 320Gig with a 60Gig hard drive.

Appreciate any help out there.

 

[NoseNuthin]

Not really much information to work with.
'My pc is slow and I don't have much disk space' is pretty hard to help you with !!!
The part numbers you list both appear to be 320GB drives.

Asssuming you are running windows try looking at the Disk Management.
That may help you understand what is happening with your disk, and/or give you some relevant information to post so people can try to help you.