2nd HDD installed as slave but still unloaded with software

So u;re saying that when u try to save what ever u're working on
 the system tells u that it is to full !? This does not mean that 
the system does not use both drives (u just didn't tell it what to do with the new one ...) !!!

- well u can try to move u;re work (not the software itself) on the new disk, and so it will free up the old disk (the one with the OS on it)

- u can try to reinstall the software on the new larger partitions on the new drive, and work there.

-but the best ting wold be to reinstall windows and all software on the larger disk (u can first try to just copy all data from u;re current C drive to a larger partition on the new disk (the partition that is set as active (so the system to know to boot from it)) and make this harddrive the primary one ...) (if the new disk is faster than the older drive, than u;re system will work a little faster ...)

- and another thing that u can do is to attach the new drive to the old one, so that the system would see just one big drive (the sum of the old and new one ! ) BUT this is very risky couse' u can lose all u're data if an error ocures, or if one drive dies...


 If i still don't get what u really want ... tell me ...

Simple, if your hardware is working all OK do this:
AND DO THIS CUZ WINDOWS XP HOME EDITION lacks of the needed administrative tools.

Go to the net and find PARTITION MAGIG or PARTITION MANAGER... download the windows version of any of those and partition the HD with them.

REMEMBER:

1. PARTITION MUST BE LOGICAL, NOT PRIMARY
2. PARTITION MUST BE NTFS (Windows XP version) that you will see in Partition Magic options...
3. If you format from Windows, disk must be intitialized as BASIC type.

if you do this and you suceed the HD will work, if not, it has a problem, either logical or physic.

Good Luck