1.5TB hard disk shows 1360GB

1.5TB hard disk shows 1360GB,why?
The disk is empty/delete partition formated/create partition/EMPTY.
OS Win7 ultimate 64bit.

Hi there

There's been LOADS of threads on this issue.

Computer memory is actually shown in 1KB (1024 byte) sizes
On Discs memory is actually shown (By the MANUFACTURER) in REAL size where 1KB = 1000 bytes.

So your 1.5TB disk which is actually 1.5 X 1000 X 1000 Bytes will be shown slightly less in the computer by Windows as it will measure free space in 1024 byte chunks.

(Don't forget also some size is used by the Windows file sysytem so even in this case your expected size will be a little less than the actual size).

Cheers
jimbo

Just a tip..
In bios shows 1500GB
In Computer Management/Disk Management shows 1397,26
In Computer shows 1360GB
-------------------------------------
MY Computer
C:/velociraptor 150GB
D:/1360GB
E:/1360GB

panais said:

Just a tip..
In bios shows 1500GB
In Computer Management/Disk Management shows 1397,26
In Computer shows 1360GB
-------------------------------------
MY Computer
C:/velociraptor 150GB
D:/1360GB
E:/1360GB

That's it see.

1. BIOS dosen't depend on OS so it shows with the manufacturer's point of view (1500 GB = 1,5 TB)

2. Computer Management shows as According to binary rules, if you look at my calculations it show the same number 1397 GiB (but it will anyway say GB)

3. And windows has some hidden important OS files, to which even you don't have access (as you are limited Administrator), so it will not show you and you can't even see what size they are. With 3rd party programmes maybe. So some size of your HD spent there and not shown to you.

And some space used for Shadow copies of the Windows.

And then there is a file system, (in your case NTFS) cluster size and so on.(If you really interested: Simple explanation for cluster size: http://en.wikipedia.org/wiki/Cluster_size (so you will understand why they play some role on wasted space aswell)

That's why Windows will show you less HD size (1360 GiB)


Hope you understand what I meant.

jav said:

panais said:

Just a tip..
In bios shows 1500GB
In Computer Management/Disk Management shows 1397,26
In Computer shows 1360GB
-------------------------------------
MY Computer
C:/velociraptor 150GB
D:/1360GB
E:/1360GB

That's it see.

1. BIOS dosen't depend on OS so it shows with the manufacturer's point of view (1500 GB = 1,5 TB)

2. Computer Management shows as According to binary rules, if you look at my calculations it show the same number 1397 GiB (but it will anyway say GB)

3. And windows has some hidden important OS files, to which even you don't have access (as you are limited Administrator), so it will not show you and you can't even see what size they are. With 3rd party programmes maybe. So some size of your HD spent there and not shown to you.

And some space used for Shadow copies of the Windows.

And then there is a file system, (in your case NTFS) cluster size and so on.(If you really interested: Simple explanation for cluster size: Data cluster - Wikipedia, the free encyclopedia (so you will understand why they play some role on wasted space aswell)

That's why Windows will show you less HD size (1360 GiB)


Hope you understand what I meant.

Yes i understand,thanks.
----------------------------
Its fun for me to watch the <<unchanged>> capacity of my 2 new hard disks.
I transfer everything i have in them,and the disks are almost empty.

its always like this,there is nothing abnormal in it or hdd manfacturer didnt bluff u...its normal what u r facing,and it should happen too.on fat32 it is less and on ntfs it is more...
if u find a hdd 1.5tb and it is showing 1.5tb,there are 2 possibilities..
1.u havnt formatted it... :P
2.u r sleeping and trying to see 1.5tb as 1.5tb in dream