|The hard drive manufacturer's size is always a bogus decimal size. E.g. 1 gb = 1,000,000,000 bytes.|
The mboard's bios and the operating system detect the size of the drive as it's binary size. E.g. 1 gb = 1,073,741,824 bytes
A ~ 82.5 gb manufacturer's size = ~ 76.6 gb binary size.
Your problem is the size of the ~ 500 gb drive is being seen as something much smaller than what the binary size should be.
Go to Disk Management.
E.g. Start - Run - type: diskmgmt.msc , press Enter
If the total size of the drive is seen as ~ 464 gb, you have a large amount of un-allocated space on the hard drive.
You can use a third party program to increase the size of the partition Windows was installed on without losing the data that's already on the partition. (You can't do that with XP itself without losing all the data on the partition.) .
E.g. The freeware Easeus Partition Master Home Edition, however, there must be enough free space on the partition Windows was installed on to install it and run it.
(Actually it's NOT a good idea to have only one partition on the only hard drive connected to the computer.
How to make more than one partition on a hard drive
See Response 3:
If the total size of the drive is seen as ~ 76.7 gb, it's seen as the same size in the mboard's bios .......
If you cloned the contents of a brand name system drive to the 500mb drive, here's you how fix that problem.
Your problem is caused by the HPA on the original drive.
The destination drive is either re-configured so it's detected as the same manufacturer's / binary size as the original drive, or the same size as the maximum manufacturer's / binary size your brand name model could have come with originally.
1710: HPA Makes the Cloned Drive Display Wrong Capacity
I have seen this problem problem before in several topics on this web site, most regarding Dell computers, once for an Acer computer
I just fixed a ~120 gb manufacturer's size drive that was being seen as a 34.5 gb binary size drive yesterday. That was my first time I had encountered the problem. The hard drive was in a computer someone had discarded that I had rescued from the trash for it's parts.
To go along with the above article....
Hitachi's Feature Tool is now here:
Support - Downloads- HDST and Simpltech legacy product drivers and downloads -
Feature Tool User's Guide is a PDF - right click on the link to download it.
The article assumes you don't have a computer with a floppy drive.
If it does have a floppy drive, the diskette creator download produces the same result as the bootable CD image.
After you have set the hard drive to it's max manufacturer's size,
- you may not need to do the rest of the procedure at the article above. Try the drive as is. If Windows loads fine, you don't need to do the rest of the prodeure - if it doesn't, you need to do it.
- you will need to use a program to use the now visible in Disk Manager un-allocated space that can do that without losing the data presently on the drive, such as Easeus Partition Master Home Edition. See above.