Upgrade my computer

[Guest]

Hello,my computer is dell GX 240, hard disk capacity is only 20 GB then how can upgrade this capacity above this or to 80 ,160

 

[gtvr]

Should be a standard 3.5" IDE drive. Pop it open & see if you have an extra drive bay. Also look at your cabling - should be 2 IDE connectors on the motherboard, whether you have 1 cable to the drive & 1 to the CD, or 1 cable that connects both to the 1st IDE, and an open 2nd IDE, either way should have expansion space.