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Hard Drive Problem - 500 GB Disk - only 371 GB un-allocated space ??
I know that HDD manufacturer's use one unit of measurement while OS's use another unit of measurement for HDD disk capacity. I expect my "500GB" drive to have about 465 GB of actual free space. Yet Windows, DISKPART, and (3) different hard drive testing software programs all indicate that the actual free space on the *used HDD I am installing is reported at 371 GB.
The drive shows up in Windows Disk Management as signed and initialized and sized as 371 GB. I thought there might be a hidden partition or a shadow copy of some kind on the drive, but I found nothing. I ran the drive through the Diskpart command's "Clean" process with no change in the free space available. I do have Windows system protection ON, but only on my "C:|" drive and not on the HDD I am concerned about. The HDD did not show up in Systems Properties\System Protection. I purchased the HDD online as "used". I must be missing something, but I do not know what. Any help will be appreciated.
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