Restore Capacity of Old Samsung 40 GB HDD

[rkvic19]

I currently use my laptop for all purposes.. but I also have my old PC for occasional purpose like torrents.
Recently, it was infected with viruses and malware.. do I thought of deleting the existing data with File Shredder and then formatting the HD.
But I noticed that it shows 37 GB instead of 40 GB capacity..
So is there any way to restore the original capacity WITHOUT connecting it to other PC ? (coz it would risk to infect the other PC as well)
Thanks guys

[Steve]

37 gb is correct size

[BlackST]

Unless there is a hidden partition, 37 GB is real. Some space is used by the file system.

[Dmitry Postrigan]

It's not the file system... 40000000000/1024/1024/1024 = 37.25GB

(more on that here)

[shahij]

Unless there is a hidden partition, 37 GB is real. Some space is used by the file system.

Its not file system, 37GB is real. O/S calculate the capacity as 1024 MB = 1GB, but Manufacturer calculate as 1000MB = 1GB. this is the difference.
More info with special information...

http://forum.csebd.net/viewtopic.php?f=13&t=46

[rkvic19]

Thanks for the clarification guys!