September monthly poll

[Moderator]

18.6 and i haxe 4.43 left  why is that you get less gigibytes than what the product shows i also had an mp3 player that said 2 and was only 1.8
what do you mean only 15 percent i had my computer under 700 mb which is under 8 percent

Here's why:

 

hart Courtesy of Western Digital.

i see what he ment now he said 80 i didn't think about that it was actually 76 and you can't have 77 gigibytes on a 76 gigibyte hardrive

i originally thought he ment to say lets say you really have a hundred  gigibyte hardrive i thought he was saying you couldn't go under 15gb
 it's actually 7 percent under what the product sas

[Moderator]

The 7% is not a constant if you do the math...a good approximation though.

it's because the computer measures a kilobyte as 1024 bytes, a megabyte as 1024 kilobytes, and so on, and the HD manufacturers sell them using standard metric (powers of 10) (so a KB is 1000 bytes, a MB is 1000 KB, etc.

I've got you all covered..    Out of a whopping   40 GB,    ~20 is free 

Although I do have 30 GB hard drive that I dedicate as a file server, but I can't keep it in my system until I add an extra fan, it runs too hot sitting right next to the other drive...

Mark my words, when I get some extra cash I'm going to build a custom system with bigger drives and I will control the world 

10gb   10.000.000.000       10gb   9.69      6.69 percemt
20gb   20.000.000.000       20gb   18.6      6.75 percent
30gb   30.000.000.000       30gb   27.94     6.68666666666666666666666666666667 percent to be exact
100gb  100.000.000.000    100gb  93,13     6.87
500gb  500.000.000.000    500gb  465,65    6.87
100gb  1.000.000.000.000 1000gb 931.30    6.87 also     

I did the math here are the exact numbers for different gigibytes didn't have  the time to do them all but most average out to be around 6.87

@876543219
also the file system eats some of the space up

10gb   10.000.000.000       10gb   9.69      6.69 percemt
20gb   20.000.000.000       20gb   18.6      6.75 percent
30gb   30.000.000.000       30gb   27.94     6.68666666666666666666666666666667 percent to be exact
100gb  100.000.000.000    100gb  93,13     6.87
500gb  500.000.000.000    500gb  465,65    6.87
100gb  1.000.000.000.000 1000gb 931.30    6.87 also     

I did the math here are the exact numbers for different gigibytes didn't have  the time to do them all but most average out to be 6.87

It's not an arithmetic constant.

What about- say- 400 Yottabytes?

 483,570,327,845,852,000,000,000,000 bytes according to a PC

 400,000,000,000,000,000,000,000,000 bytes if there was a 400TB HD manufactured.

approx. 20% difference.


the reason for this difference has been explained. there simply is no "average" and like most "rules of thumb" woefully inaccurate.

10GB according to a PC is 10*1024*1024*1024, or 10,737,418,240 bytes.

However hard drives are sold differently- a 10GB drive will likely actually be 10,000,000,000 bytes.



EDIT:

last nitpick:

6.68666666666666666666666666666667 percent to be exact

No, to be exact would require infinite 6's.

@bc_programmer
technically the computers are correct on the size and people just use 1000 because its easier

No, to be exact would require infinite 6's.

no thats impossable
there maybe billions or even trillions of 6's but not infinite

On my laptop, 36.29GB free of an 80GB drive.  Since the formatted capacity is actually about 74.5GB, used space is less than 40GB.  I believe my desktop computer would also fall in the 21 - 40 GB category, also an 80GB drive.

thats because whatever you calculated it on ran out of variable capicity
also my 486 computer is 100/235MB

it's not infinite 6s there is a 7 after 30 6s

yes. It is.

 try 2/3 in calculator.

 it gives me

0.66666666666666666666666666666667

but the real answer is .6 repeating.

your right i tried an online calculator and it said 7 only after 12 6s

the 7, is from rounding, since the calculator or whatever is being used can only have a certain number of significant digits.

Now that we're all up to speed on arithmetic... 

About 150 of my 750
my computer apps teacher said that you would never use more then 100gb