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Missing Disk Space After Reformat Of Hard Drive


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#1 Newbie_uk

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Posted 19 January 2008 - 05:09 AM

Apologies if this is a really basic question that you've all come across a thousand times!
I have a PC which used to have a FAT32 and NTFS partitions (it used to have Windows 2K). I reformatted the hard disk to get rid of any previous partitions and I now have 37GB of space on a 40GB HD. There is just a single NTFS partition with Windows XP Pro. The 3 GB does not appear as unallocated space. I want to sell this PC and I'm concerned that the reformat did not completely clear the HD and may still contain personal data. What do you recommend I do?

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#2 Platypus

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Posted 19 January 2008 - 06:01 AM

37GB sounds about right. Hard drive manufacturers use decimal measure for size, whereas normal computer practice is binary. The discrepancy annoyed some people:

http://apcmag.com/7449/seagate_offers_cash...ssing_megabytes

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#3 Teenage.Zombiee

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Posted 19 January 2008 - 06:31 AM

Yeah. Pretty much any storage device is the same way. Its rather inconvenient :thumbsup:

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#4 jgweed

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Posted 19 January 2008 - 08:22 AM

Have you taken into account the space needed for the OS? or is the "lost" space on another partition?
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#5 Newbie_uk

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Posted 19 January 2008 - 05:08 PM

I had forgotten about the difference between the advertised disk space and the "actual" disk space - I just didn't think it would be that much! I have a feeling that the original FAT32 partition was about 3GB - that's probably what made me worried. There were 2 partitions but I deleted them both when I reinstalled the new OS. Disk management only lists one disk, as does DISKPART in DOS. Have I covered everything do you reckon?

#6 Platypus

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Posted 19 January 2008 - 07:01 PM

40 GB (SI) is approx 37.25 GiB (Binary), so if the partition is close to this, you're OK.

Also, Drive Management will likely show a few MB of unallocated space, which is left free to enable the drive to later be converted to a Dynamic Drive.

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