Re: Calculating a Kilobyte
- From: "Octavian Rasnita" <orasnita@xxxxxxxxx>
- To: <programmingblind@xxxxxxxxxxxxx>
- Date: Wed, 29 Oct 2008 08:24:23 +0200
What is nice is that we talk about the sizes of hard disks and unoccupied space
like about a gram of gold, nowadays when the hard disk space is so cheap.
I remember that I worked on a computer with a hard disk of only 40 MB (MB, not
GB) many years ago, and I have also used many hard disks that had less than 300
MB.
But now we can use hard disks 1000 times bigger or more, and care about a few
clusters which are not occupied. :-)
Octavian
----- Original Message -----
From: "tribble" <lauraeaves@xxxxxxxxx>
To: <programmingblind@xxxxxxxxxxxxx>
Sent: Wednesday, October 29, 2008 2:40 AM
Subject: Re: Calculating a Kilobyte
> Obviously. But one banks on the probability that that only happens rarely.
> --le
>
> ----- Original Message -----
> From: "black ares" <matematicianu2003@xxxxxxxxxxx>
> To: <programmingblind@xxxxxxxxxxxxx>
> Sent: Tuesday, October 28, 2008 3:10 PM
> Subject: Re: Calculating a Kilobyte
>
>
> 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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