# HDD problem

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• 07-08-2002
HDD problem
my HDD is of 20gb.......and i am having 3 drives.....but total size of three drives (c+d+e) become 18.5 or 19 gb.....
my friend is having HDD of 10gb and having single drive (c). but in properties it is showing some 8gb .........so why this differnce of 1 or 2 gb? is this a hdd loss or comp. error?
• 07-08-2002
sorry
oops..........i want to post this thread under General.........so how can i move this thread there?help me first for moving thread......
sorry again...........
• 07-08-2002
nvoigt
There is a difference in units:

a kilobyte is 1024 bytes. However, a Kilo bytes is 1000 bytes.

Accordingly, a megabyte is 1024*1024 bytes ( kilobyte*kilobyte ), however a mega bytes would sum up to kilo*kilo = 1000*1000 bytes. Add Giga to this and it becomes 1024³ or 1000³ depending on your usage of kilo. Marketing people tend to use kilo = 1000 because it's a cheap trick to declare something larger than it actually is. On the other hand, some of them simply have no clue that bytes are measured in powers of two ( 1024 = 2^10 ).

Your HDD is 20 gig, which, translated from marketing to real world units is not 20*1024*1024*1024 bytes, but 20*1000*1000*1000 bytes.

Your HDD has 20.000.000.000 bytes ( 20 marketing gigs ).
If you divide this by 1024 three times to get the number of real GB, you get 18.6something GB ( 18.626.451.492 bytes )

If my butcher would calculate this way, I would probably call the police... welcome to the world of marketing.
• 07-08-2002
vasanth
Weall for extra pocket money i assemble PC's... I had a very hard time explaining to a customer why his hdd was only around 35.5 when i specified 40 GB in the quotation...
• 07-08-2002
netboy
It's all about units conversion problem.... Not a problem actually... It's the conversion that confused many non-IT literate users about getting a "smaller" harddisk drive from the stated size.

:cool:
• 07-08-2002
netboy........can u plz explain the unit conversion to me.........
plz....
• 07-08-2002
i got it
yes.........i got it guys.............sorry.i was confused.thats why asking ques......now i got it...........thanx to everybody........esp. Mr. Nvoigt.........thanx again.................

pk
• 07-08-2002
Fountain
You really trying to sat that you thought a 20gig drive was really 20gig? Oh man
• 07-09-2002
vasanth
well i onece had another problem.. I assembled a PC for a old customer who was learning computers.. He called me on phone and said he wanted only one harddisk of capacity 10 GB and not 4 which made up 10Gb...(I had partitioned his HDD into 4 parts :))..
• 07-09-2002
gr8 joke
that was gr8 practical joke.............did u provide him a coffee tray?
one of customer called my friend and said that ,'the coffee tray ,u have provided, is broken'..........he was talking about cd drive.....and before calling he put a coffee mug on that........
• 07-09-2002
Xterria
hey prasad have you ever seen a cobra
• 07-09-2002
yess............why?
• 07-10-2002
Xterria
how close?
• 07-10-2002