Re: Calculating a Kilobyte

  • From: "black ares" <matematicianu2003@xxxxxxxxxxx>
  • To: <programmingblind@xxxxxxxxxxxxx>
  • Date: Tue, 28 Oct 2008 22:10:43 +0200

you are right, but as anyone said,
a block has a fixed size and a file can niot fill all of its bloks
if you have the block size 4096 bytes
and you have a file of 12289 bytes you will have 4 bloks
but only a byte from the 4th block will be used, the rest of 4095 will be free, but no other file can use them because this is a block of the specified file. 
so infact the file will have on the hdd 16384 bytes.
----- Original Message ----- From: "tribble" <lauraeaves@xxxxxxxxx> 
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Tuesday, October 28, 2008 1:08 AM
Subject: Re: Calculating a Kilobyte



Don't you mean data is stored in blocks of a fixed size? Or is there a new
paradigm since my active time on this stuff? A block was a multiple of a
kilobyte.  A file was so many blocks. The blocks didn't need to be
contiguous. The mapping to blocks was completely transparent to the end
user.
Sina -- you're still in academia studying the current state of data storage. 
I have not runto anything referring to blocks on windows, so maybe it was
just a unix-ism.
Anyone have an idea what the truth is? Just curious.
TIA
--le
----- Original Message ----- From: "E.J. Zufelt" <everett@xxxxxxxxx> 
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Monday, October 27, 2008 4:33 PM
Subject: Re: Calculating a Kilobyte


Also,

On a harddrive there is used space, free space and wasted space.  Since
information is stored on a disk in sectors there are times that a small
amount of information takes up a large amount of space.

For instance, a file that is 123 bytes in size may take up 4096 bytes
because two files cannot be stored in the same sector.
The rule is that a single file can be stored in many sectors, but two files 
cannot be stored in any one sector.

HTH,
Everett
----- Original Message ----- From: "Sina Bahram" <sbahram@xxxxxxxxx> 
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Monday, October 27, 2008 5:17 PM
Subject: RE: Calculating a Kilobyte



You're being caught by the fact that harddrive manufacturers measure a
megabyte as 1,000,000 bytes, and your 188 gigabytes is being given to you
in
terms of a gigabyte being 1,024 megabytes which are 1,024 killabytes which 
are 1,024 bytes.

Take care,
Sina

-----Original Message-----
From: programmingblind-bounce@xxxxxxxxxxxxx
[mailto:programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of Hayden's
Harness
Attachment
Sent: Monday, October 27, 2008 5:01 PM
To: programmingblind@xxxxxxxxxxxxx
Subject: Calculating a Kilobyte

I have an external USB Hard Drive. That says ihave 188GB free. The
kilobytes
are 202,016,489,472. Dividing this by 188GB, gives 1,074,555,795. Huh? I
thought 1MB was 1,024,576.

Angus MacKinnon
Infoforce Services
http://www.infoforce-services.com

"Faith is the strength by which a shattered world shall emerge into
the light." - Helen Keller

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