how can i come to know that how bigger hard disk my system can support.

It depends on the motherboard and the Operating System. Your motherboard should be able to recognise hard disk drives with a capacity of up to 250Gb, the most readily available HDD capacity in my country. It should not have any problem with the latest offering of 300Gb. Have you done a search on it? I presume you are using at least Windows XP. Therefore I do not see the need of discussing the OS in relation to HDD capacity.

You don't need to worry about what kind of hard drive your motherboard will support. You can purchase any size hard drive just as long as the connector matches that on your motherboard for example IDE(Integrated Device Electronics) connector or SATA (Serial Advanced Technology Attachment). Sata is more up to date than the traditional IDE. Andrew

Howdy 1anurag1! If your motherboard can already support core2duo I presumed you got internal SATA drives slots for Harddisk. And I think it can support 500 giga or more or 1 terabyte hard disk space. A small form of motherboard can have two (2) slots of SATA drives for hard disk. A larger form of motherboard can have four (4) slots. But adding hard disk internally can add also heat. And also, the more of the hard disk storage capacity, is the more heat can create internally of the computer. So, be sure inside of your computer case is well ventilated or have nice and decent blowers or cooling systems. Overheating automatically activates the auto shutdown to avoid damage of the computer's motherboard. Well, you can add external hard disk drives via USB or Firewires. Or Network Attached Storages. That can support 500 gigabytes or 1 terabytes or more. Plus your computer is safe for over heating. Thanks and enjoy myLot!

Hard drive capacity seems to be a motherboard thing, so to know it's capacity you can check your mainboard manual, if you don't have it, just look at your motherboard model by opening the case and search the net for that particular model.

First check your BIOS version. Your bios basically decides the hard disk support, so the most recent bios should have the support for the most recent hard disk out there. Check on the Intel's website for the updates about BIOS, Update your BIOS once you purchased the hard dive and you are good to go. Do let me know how it worked for you. Take care.

Hey You can use any capacity of HArd Disk, but it depends of your motherboard; but if you intall a big one, your system turns more slow. I recomend you if you want to use a HIGH CAPACITY (500 GB and up), use it partionated, If you install Windows Vista use it in a partition of 120 GB, and the rest of your storage device like second partition, this allow you to have a big hard Disk with a high performance. If you still having problems, just let me know and I will send you details how to do all this stuff. I wish you good luck !!

I think.. you can't know..that how bigger hard disk system can support.. i think..now in that time the technology is superior.. and you can choose any capacity hard disk who are available in market.. i think something is depend on your motherboard also.. so you can check.. ho higher capacity of hard disk that your system supported or not...