Lost space with WD1600JB

[kevindu28]

With my Western Digital 160GB (WD1600JB) drive, I created one extended
partition. In this partition is a 75GB NTFS slice and the other is a
18GB EXT3 (Linux) slice. I used Partition Magic to created these
partitions. PM reports that only 59GB is free, giving me a total of
152GB of available space on the drive. So, I was just wondering what
happened or happens to the 8GB not being reported.

 

[Rod Speed]

With my Western Digital 160GB (WD1600JB) drive, I created one extended
partition. In this partition is a 75GB NTFS slice and the other is a
18GB EXT3 (Linux) slice. I used Partition Magic to created these
partitions. PM reports that only 59GB is free, giving me a total of
152GB of available space on the drive. So, I was just wondering what
happened or happens to the 8GB not being reported.

Thats normal. Its just the two different ways of stating the size.
The manufacturer uses decimal GBs, 1,000,000,000 bytes
PM is using binary GBs, 1024*1024*1024 bytes.

 

[Thomas Wendell]

It's because the advertising people counts sizes in decimal, but OS counts
in binary, so:

Advertised --- Actual Capacity
10GB --- 9.31 GB
20GB --- 18.63 GB
30GB --- 27.94 GB
40GB --- 37.25 GB
60GB --- 55.88 GB
80GB --- 74.51 GB
100GB --- 93.13 GB
120GB --- 111.76 GB
160GB --- 149.01 GB
180GB --- 167.64 GB
200GB --- 186.26 GB
250GB --- 232.83 GB




--
Tumppi
=================================
Most learned on these newsgroups
Helsinki, FINLAND
(translations from/to FI not always accurate
=================================

 

[Andy]

With my Western Digital 160GB (WD1600JB) drive, I created one extended
partition. In this partition is a 75GB NTFS slice and the other is a
18GB EXT3 (Linux) slice. I used Partition Magic to created these
partitions. PM reports that only 59GB is free, giving me a total of
152GB of available space on the drive. So, I was just wondering what
happened or happens to the 8GB not being reported.

Question
Why is my drive displaying a smaller than expected capacity
than the indicated size on the drive label?
Answer
<http://wdc.custhelp.com/cgi-bin/wdc...3B2PSZwX2N2PSZwX3BhZ2U9MQ**&p_li=&p_topview=1>

 

[Rod Speed]

It's because the advertising people counts sizes in decimal,

So does the SI.

but OS counts in binary,

No it doesnt.

so:

Advertised --- Actual Capacity

The actual capacity in SI standard units, actually.

 

[Arno Wagner]

With my Western Digital 160GB (WD1600JB) drive, I created one extended
partition. In this partition is a 75GB NTFS slice and the other is a
18GB EXT3 (Linux) slice. I used Partition Magic to created these
partitions. PM reports that only 59GB is free, giving me a total of
152GB of available space on the drive. So, I was just wondering what
happened or happens to the 8GB not being reported.

PM uses the wrong units. It says 152GB, but means 152GiB.
152GiB = 160GB. See here:

http://physics.nist.gov/cuu/Units/binary.html

Arno

 

[Arno Wagner]

It's because the advertising people counts sizes in decimal, but OS counts
in binary, so:

Advertised --- Actual Capacity
10GB --- 9.31 GB
20GB --- 18.63 GB
30GB --- 27.94 GB
40GB --- 37.25 GB
60GB --- 55.88 GB
80GB --- 74.51 GB
100GB --- 93.13 GB
120GB --- 111.76 GB
160GB --- 149.01 GB
180GB --- 167.64 GB
200GB --- 186.26 GB
250GB --- 232.83 GB

You have it wrong. The HDD manufacturers do what is required by law,
i.e. correct use of units. Reference:

http://physics.nist.gov/cuu/Units/binary.html

Arno

 

[Peter]

PM uses the wrong units. It says 152GB, but means 152GiB.

152GiB = 160GB.

Since when 152 * 1.073741824 = 160 ?
You have it wrong.

 

[kevindu28]

Since when 152 * 1.073741824 = 160 ?
You have it wrong.

I rounded off the totals of the space reported by PM. So it may not be
152GB but I know it not 160GB. Thanks to all for the responses.