View Full Version : My hard drives' figures don't compute!

13-03-2009, 05:00 PM
My Toshiba Satellite A300-VO1 supposedly came with two 320 GB Hard Drives. I ran Belarc Advisor over the system and it reported 629.72 GB of Useable Hard Drive Capacity (10 GB short) whilst Windows’ diskmgmt.msc and the info symbols in Computer report one drive at 288 and the other at 298 GB (54 GB short).
Could somebody please explain why there is a discrepancy in the figures?. Incidentally, I’m sure that the readings from Computer for C and D drives used to have them both at 298GB but C drive seemed to lose those extra 10 gigs after I updated Firefox the other day. Is that possible? Note: I’m not talking about Free Space, but the total capacity of the drives.
I’m using Vista Home Premium SP 1

13-03-2009, 05:11 PM
Belarc was using a decimal representation of your drive, while windows uses the binary representation of the hard drive.

In most cases, the binary representation is the actual amount of space you can use

And the 10gig difference?...No idea. Download WinDirStat and see for yourself



13-03-2009, 05:47 PM
Use Windows Explorer. Right click the drive and choose properties.
Now compare the 2 figures given.
You'll see.

13-03-2009, 06:16 PM
You may also have a hidden partition for use with recovery disks which won't show up in Explorer.