partitioned HD causing slow performance?

i have a MSI GX630 and it came with the HD partitioned into two with the C drive having 44GB and the D drive having 181GB. the c drive is where everything is normally stored so im running out of space very quickly there so i decided to put some program files on the D drive but i've noticed that nw my comps runs very slowly @ startup. it runs slower overall. i dont know if the fact that i've been installing programs to the D drive may have caused this. and some of the programs that run @ startup are stored in the D drive so mayb that's a problem?
also is there any way to fuse these partitions w/o formatting the HD?

 

The most likely cause is that NTFS, like most filesystems, encounters performance problems when a volume starts to fill up close to capacity. How much free space do you have?

 

11GB free of 43.9GB on C
78.9GB free of 181GB on D

 

Have you tried defragmenting the volume with the OS?

Wrt to your question of combining partitions: it's not possible. You'll have to delete the second partition, expand the first partition to "claim" the space left by the deleted volume, and move your personal data back on.

 

ye i manually defragged all drives last week. it even defragged my plugged in flash drives.

so i'll have to go to the drive manager and delete the D partition and then expand the C drive to get the unallocated space right?

 

Yes, you will.

Also, you may want to defrag again, as data will become scattered across the filesystem as you move more around.