8mb odd gayab!!!

[wizrulz]

my friend got a new 120mb hdd.....
i could not go to his place during installation and partition so he called me for the process of installation and i guided him thru....
But when all was doen there was a problem
PARTITIONS are
c=> 27.9 GB
d=>41.9 GB
e=>20.9 GB
f=>20.9 GB

TOTAL=>111.6 GB

So where is odd 8Gb???
if it was 2 to 3 gb then i can understand.... but 8 GB !!! HELP

[Chirag]

Ok.Lemme explain. Look 1024mb=1gb. But computers take 1000mb=1gb. So it is showing less space.

[wizrulz]

Originally Posted by chirag

Ok.Lemme explain. Look 1024mb=1gb. But computers take 1000mb=1gb. So it is showing less space.

I know that dude
By 120*1024=122880MB
and by 120*1000=120000MB
so the differnce being 122880-120000=2880MB
so 2880/1000=2.8GB

And 8Gb is huge nowhere to what odd 3gb...now EXPLAIN

[Chirag]

Even i calculated that. My frnd told me the above reason and I have only read this same reason in this forum so i posted here. I think it might be used for some system works and is not showing. I have Hitachi 164 GB Sata II and it shows only 153.4 GB.

[samrulez]

Hard disk companys don't see things in quite the way u do.1KB is considered equal to 1000 bytes.The actual number is 1024(which is raised to the power of 10).Now consider your 102 GB hdd is equivalent to 120,000,000,000 bytes according to the hard drive.The OS calculates the capacity using 1024 (correct binary calculation).Therefore, if u thke 120,000,000,000 bytes and divide that by 1024, the answeris 117187500 KB.Divide by 1024 again to get 114440.91796875 MB.Divide this by 1024 and u get 111.758708953857421875 GB.Divide this by the number of partitiones.Its just that the hard drive companys round off 1024 to 1000 (which is not an accurate way of displaying the capacity of the drive

[wizrulz]

Originally Posted by samrulez

Hard disk companys don't see things in quite the way u do.1KB is considered equal to 1000 bytes.The actual number is 1024(which is raised to the power of 10).Now consider your 102 GB hdd is equivalent to 120,000,000,000 bytes according to the hard drive.The OS calculates the capacity using 1024 (correct binary calculation).Therefore, if u thke 120,000,000,000 bytes and divide that by 1024, the answeris 117187500 KB.Divide by 1024 again to get 114440.91796875 MB.Divide this by 1024 and u get 111.758708953857421875 GB.Divide this by the number of partitiones.Its just that the hard drive companys round off 1024 to 1000 (which is not an accurate way of displaying the capacity of the drive

Understood dude....but should not then they(company) give correct capacity....means for 120 gb if they are taking 1000 we should be given odd 128gb so that after partitions and all things we get our 120gb which we pay for or simply use 1024 as standard ....as they r after all preparing teh rpoduct for computers and hence use computer standard values !!!!

[digiFriend]

SI standard 10^3
Each successive prefix is multiplied by (10^3)=1000

BI standard 2^10
Each successive prefix is multiplied by (2^10)=1024 rather than the (10^3)=1000 used by the SI prefix system.

In January 1999, the International Electrotechnical Commission introduced the prefixes kibi-, mebi-, gibi-, etc., and the symbols Ki, Mi, Gi, etc. to specify binary multiples of a quantity.
BI standard 2^10
Name Symbol value
kibi Ki 2^10=1024
mebi Mi 2^20=10,48,576
gibi Gi 2^30=1,07,37,41,824
tebi Ti 2^40=10,99,51,16,27,776

SI standard 10^3
Name Symbol Value
kilo K 10^3 = 1,000
mega M 10^6 = 10,00,000
giga G 10^9 = 1,00,00,00,000
tera T 10^12 = 10,00,00,00,00,000

until manufacture does not use BI standard ,we are not going to get intended capacity of data storage. (and there are no plans by manufacture to follow BI standard because they want to pump higher number by using SI standard )

see another example of different standard:
CD capacity is calculated by BI standard while DVD capacity by SI standard.

(CD capacities are always given in BI standard. A "700 MB" CD has a nominal capacity of about 700 MiB . But DVD capacities are given in SI units. A "4.7 GB" DVD has a nominal capacity of about 4.38 GiB.

(computer market is about HYPE and NUMBERS .)

[deathvirus_me]

lol ... in actual calculation ...

1 KB = 1024 B
1 MB = 1024 KB
1 GB = 1024 MB

But the hdd manuafcturer use

1 KB = 1000 B
1 MB = 1000 B
1 GB = 1000 MB

So u see ... when the os calculates the total size it uses 1024 for dividing .. while the hdd's were manufactured by 1000 units s.. .. lol ... nice way to fool people ...

[zuala77]

hi....i bought a 160 Gb sata 2 hard disk but...it was only 150 gb as i installed xp.......fact is that..this companies dont give the exact.....storage capacity......dude..i lost my 10 GB......but as i did some reasearch..it happens a lot with the 120...160....GB disks...

[samrulez]

Originally Posted by zuala77

hi....i bought a 160 Gb sata 2 hard disk but...it was only 150 gb as i installed xp.......fact is that..this companies dont give the exact.....storage capacity......dude..i lost my 10 GB......but as i did some reasearch..it happens a lot with the 120...160....GB disks...

Well...it happens with all hard disks in a 40 gig u get 36 in a 80 gig u get 75 etc.Pretty wierd of them......

[dissel]

I have 2 machine using 160 GB and 250 GB hdd.....

Getting only 149 gb and 232 gb respectively.......think how much i loose

[alienspiesu]

its tru Well...it happens with all hard disks
mine is a 120 gb n i get only 112.8
so mine too almost 8gb is gone..