111Gb intead of 120GB

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i put a new hard drive on my computer as a slave and copy the files of my old drive to it then i put the new one as the master,but now my computer only read 111GB and my drive is a 120GB.i use discwizard to copy the drives.any help please.
 
From the Western Digital website:

Determining drive capacity can be confusing at times because of the different measurement standards that are often used. When dealing with Windows and Mac based systems, you will commonly see both decimal measurements and binary measurements of a drive's capacity. In either case, a drive's capacity is measured by using the total number of bytes available on the drive. As long as the drive displays the correct number of bytes (approximate), you are getting the drive's full capacity.

Decimal vs. Binary:
For simplicity and consistency, hard drive manufacturers define a megabyte as 1,000,000 bytes and a gigabyte as 1,000,000,000 bytes. This is a decimal (base 10) measurement and is the industry standard. However, certain system BIOSs, FDISK and Windows define a megabyte as 1,048,576 bytes and a gigabyte as 1,073,741,824 bytes. Mac systems also use these values. These are binary (base 2) measurements.

To Determine Decimal Capacity:
A decimal capacity is determined by dividing the total number of bytes, by the number of bytes per gigabyte (1,000,000,000 using base 10).

To Determine Binary Capacity:
A binary capacity is determined by dividing the total number of bytes, by the number of bytes per gigabyte (1,073,741,824 using base 2).
This is why different utilities will report different capacities for the same drive. The number of bytes is the same, but a different number of bytes is used to make a megabyte and a gigabyte. This is similar to the difference between 0 degrees Celsius and 32 degrees Fahrenheit. It is the same temperature, but will be reported differently depending on the scale you are using.



--------------------------------------------------------------------------------



Various Drive Sizes and their Binary and Decimal Capacities



Drive Size in GB Approximate Total Bytes Decimal Capacity
(bytes/1,000,000,000)
Approximate Binary Capacity (bytes/1,073,724,841)
10 GB 10,000,000,000 10 GB 9.31 GB
20 GB 20,000,000,000 20 GB 18.63 GB
30 GB 30,000,000,000 30 GB 27.94 GB
40 GB 40,000,000,000 40 GB 37.25 GB
60 GB 60,000,000,000 60 GB 55.88 GB
80 GB 80,000,000,000 80 GB 74.51 GB
100 GB 100,000,000,000 100 GB 93.13 GB
120 GB 120,000,000,000 120 GB 111.76 GB
160 GB 160,000,000,000 160 GB 149.01 GB
180 GB 180,000,000,000 180 GB 167.64 GB
200 GB 200,000,000,000 200 GB 186.26 GB
250 GB 250,000,000,000 250 GB 232.83 GB


--
Carey Frisch
Microsoft MVP
Windows XP - Shell/User

Be Smart! Protect your PC!
http://www.microsoft.com/security/protect/
 
-----Original Message-----
i put a new hard drive on my computer as a slave and
Click to expand...
copy the files of my old drive to it then i put the new
one as the master,but now my computer only read 111GB and
my drive is a 120GB.i use discwizard to copy the
drives.any help please.
.
Click to expand...


When viewing the properties on a hard drive under Windows
it considers a MB to be 1,048,576 bytes and it considers
a GB to be 1,073,741,824 bytes.

If you view partitions created by Data Lifeguard with a
utility that considers a MB to be 1,048,576 bytes, such
as DOS FDISK or Windows 2000/XP Disk Management, the
partition size presented will be a lesser number of MB.
The actual storage capacity is the same.

Example: If a drive has 1024 cylinders, 16 heads and 63
sectors per track, Data Lifeguard will show a capacity of
528MB. FDISK will show a capacity of
504MB.
So windows 1,073,741,824 X your 111 gig probably like
111.5 will = 120 Gig.you still have 120 Gig's just
windows recognise it as 111.? becuse the 1,073,741,824
per Gig thing.Your just fine.My 120 Gig shows 111.7
Gig,My 40 Gig shows 38.2,and 30 Gig 29.
 
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