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why only 931.51GB but not 1000GB?
Hi ,
yesterday i bought a seagate harddisk that is labelled as 1000GB. Now I have just finished the physical
installation of the harddisk and set the BIOS "ON" for the related controller (it is SATA or II I am not sure)
, Now I am in the windows of "Disk Management" under "Computer Management"
, before any partition or format
but it shows that there is an initialized unknown harddisk that is 931.51GB instead of 1000GB...
oh my god... why 931.51GB?? where is that almost 70GB goes? it's too much.. Can I also use that
70GB?? or it will be everything alright after my partition and format???
By the way, what should I choose? NTFS or FAT or FAT 32?? my current OS (in another harddisk)
is NTFS, should I also choose NTFS? what is the difference?? which one is better?
Many thansk!!
ejn63
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87.5K Posts
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October 3rd, 2008 12:00
The 1000 gigs is decimal; Windows counts in binary. A binary gig is larger than a decimal gig:
1000 * (10^9/2^30) = 930 binary gigs.
Nothing is missing.
keithg2
935 Posts
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October 3rd, 2008 14:00
Here's another way of looking at it.
When the hard disk manufacturer sold you a 1000GB hard drive, they were selling you 1,000,000,000,000 bytes. Windows divides this number by what it considers a GB (1073741824) and reports the hard disk size as:
1000000000000 (bytes) / 1073741824 (bytes per GB) = 931 GB
Dev Mgr
9.3K Posts
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October 3rd, 2008 14:00
In your case (like keithg2 mentioned)
1,000,000,000,000 / 1,073,741,824 = ~931.3 GiB
osprey4
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October 3rd, 2008 22:00
jepal357
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August 22nd, 2015 20:00
The simplest answer is that windows uses gibibytes instead of gigabytes