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What is the real storage of a 500gig HDD in windows 7

(8 posts)
  • Started 1 year ago by Bear1951
  • Latest reply from AlanWade
  • Topic Viewed 457 times

Bear1951
Posts: 2

As a test I have formatted a WD Blue 500gig Hard disk (allocation unit 512 bytes).
The smallest file I could save was 4K (4096 bytes - anything smaller used 4096 bytes on the drive)) so I made copies of this file to use 1 gig. I then copied these to get a 16gig directory.
I then copied these to try and fill the hard drive and only managed to get 22 of them
and 7 * 1 gig Directories. By my calculation this comes to 359gig or 385,473,314,816 Bytes
Where did the roughly 100gig missing space get used?

Posted 1 year ago
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raphoenix
raphoenix
Posts: 14920

If you see Exact BELOW Link while searching, do NOT click link as will get you 2013 Anti Virus Trojan.

[ What is the actual size of a 500GB hard drive? - … ]

Rick P.

Posted 1 year ago
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Bear1951
Posts: 2

I know that the HDD manufacturers use a decimal 500gb which translates to about 464gb but even with that in mind I am still only saving about 359gb of 4k files - ie 105gb is used somewhere that is not accounted for by windows. Each directory shows exactly 16gb

Posted 1 year ago
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warlock
warlock
Posts: 4100

@Rick, Go to off topic.

Posted 1 year ago
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warlock
warlock
Posts: 4100

@Bear1951, Read the answer on this forum. http://www.tomshardware.com/fo.....hows-400gb

Posted 1 year ago
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presence1960
presence1960
Posts: 280

The actual size in Windows and Linux of a "500 GB" disk is 465.76 GB. The discrepancy happens because Operating systems measure 1024 MB as 1 GB. However the manufacturers of the hard disks measure 1000 MB as 1 GB. This results in the size the manufacturer puts on the product being reported back by an Operating System as a little less than the manufacturer says it is.

Posted 1 year ago
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ispalten
ispalten
Posts: 6259

Probably SYSTEM RESTORE space.

Get a program like WINDIRSTAT or SPACE SNIFFER and it will show you all allocations. Make sure FREE SPACE and UNALLOCATED is checked.

Irv S.

Posted 1 year ago
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AlanWade
AlanWade
Posts: 255

And a few gig allocated to the Ryclcle Bin.

Posted 1 year ago
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