40 - Starting Your LIFEBOOK Notebook
Understanding Hard Drive Capacity
It may appear that the hard drive capacity is lower than that stated in the system specifications. This is due
to the two different ways that are used to measure hard drive capacity:
decimal
and
binary
. Typically, hard
drive sizes are stated in decimal Gigabytes, however the computer’s operating system recognizes the size
in binary Gigabytes. A decimal Gigabyte equals one billion bytes; a binary Gigabyte equals approximately
1.074 decimal Gigabytes. In the chart below, for example, the 500 GB (decimal) hard drive is equal to 466
GB (binary).
Initially, the C: and D: partitions are the same size (225 GB and 225 GB binary, in this case). The
Windows Recovery image file is 16 GB and the System Image is 200 MB. Adding them all together, the
system recognizes 466 GB binary.
.
Installing Click Me!
Hard Drive
Binary
Bytes
C Partition
D Partition
C+D Total
Windows
Recovery
System
Image
160 GB
149 GB
67 GB
67 GB
133 GB
16 GB
200 MB
320 GB
298 GB
141 GB
141 GB
282 GB
16 GB
200 MB
500 GB
466 GB
225 GB
225 GB
450 GB
16 GB
200 MB
750 GB
698 GB
341 GB
341 GB
682 GB
16 GB
200 MB
B
EFORE
INSTALLING
THE
C
LICK
M
E
!
UTILITY
,
BE
SURE
THE
WIRELESS
LAN
DEVICE
IS
ENABLED
BY
TURNING
ON
THE
WIRELESS
DEVICE
SWITCH
ON
THE
FRONT
EDGE
OF
THE
SYSTEM
.
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