Cluster Help

[nymph4]

OK so if I have it right if I am going to have FAT 16 on a Hard Drive that is 255 MB in size and I know the Cluster size will be 4kB.

Then the math goes like this 255,000,000 divided by 4000 = 63,750 Clusters.
So I will have 63,750 Clusters on that Drive RIGHT???

[Dusty]

Close enough to earn you an A grading..

[nymph4]

I needed help finding a fue of the number of Clusters?
I was useing google.com to find the BIG ones and then it was not working any more for them.
I just need these thanks

32.52 MB divided by 0.5 kB is how many clusters.

260 MB divided by 0.5 kB is how many clusters.

2 TB divided by 32 kB is how many clusters.

[BC_Programmer]

this is really just basic math...

32.52 MB divided by 0.5 kB is how many clusters.

32.52*1024*1024=34,099,692 bytes / 512 bytes =  66,601 clusters.

260 MB divided by 0.5 kB is how many clusters.

260*1024=26,624 KB * 2 = 53,248 clusters.

2 TB divided by 32 kB is how many clusters.

I hope you can see the pattern and apply it here- 2TB is 2*1024*1024 KB... then divide by 32...

[nymph4]

Can  someone tell me if I have this coreect?

If you see the numbers 250 M.B. you would write it as 250,000,000
So if you see 1024 M.B. would you write it as 1,024,000

Is this right

[BC_Programmer]

technically, a KB is, for example, 1000 bytes, since they introduced "KiB" "Kibibytes" and "MibiBytes" and other such nonsense. It just ends up confusiong people- I always go with the powers of ten approach. So 1024MB would be 1,048,576KB

[nymph4]

OK I am geting lost

1024 M.B.

We would say ONE thousand twentyfour Million

RIGHT

[patio]

Sigh...

[BC_Programmer]

OK I am geting lost

1024 M.B.

We would say ONE thousand twentyfour Million

RIGHT

one thousand twenty four Megabytes.

of course you could say "One billion seventy three million seven hundred and forty one thousand eight hundred and twenty four bytes".
1,073,741,824



Powers of 2.

[ChrisXPPro]

Let me quote from a site - http://www.whatsabyte.com/ - which might help explain some apparent inconsistencies!!!

These terms are usually used in the world of computing to describe disk space, or data storage space, and system memory. For instance, just a few years ago we were describing hard drive space using the term Megabytes. Today, Gigabytes is the most common term being used to describe the size of a hard drive. In the not so distant future, Terabyte will be a common term. But what are they? This is where it gets quite confusing because there are at least three accepted definitions of each term.
 
According to the IBM Dictionary of computing, when used to describe disk storage capacity, a megabyte is 1,000,000 bytes in decimal notation. But when the term megabyte is used for real and virtual storage, and channel volume, 2 to the 20th power or 1,048,576 bytes is the appropriate notation. According to the Microsoft Press Computer Dictionary, a megabyte means either 1,000,000 bytes or 1,048,576 bytes. According to Eric S. Raymond in The New Hacker's Dictionary, a megabyte is always 1,048,576 bytes on the argument that bytes should naturally be computed in powers of two. So which definition do most people conform to?

When referring to a megabyte for disk storage, the hard drive manufacturers use the standard that a megabyte is 1,000,000 bytes. This means that when you buy an 80 Gigabyte Hard drive you will get a total of 80,000,000,000 bytes of available storage. This is where it gets confusing because Windows uses the 1,048,576 byte rule so when you look at the Windows drive properties an 80 Gigabyte drive will report a capacity of 74.56 Gigabytes. Anybody confused yet? With three accepted definitions, there will always be some confusion so I will try to simplify the definitions a little.

The 1000 can be replaced with 1024 and still be correct using the other acceptable standards. Both of these standards are correct depending on what type of storage you are referring.

Just a reminder - in the decimal notation -

K - kilo - 1000 - 10^3
M - mega - 1,000,000 - 10^6
G - giga - 1,000,000,000 - 10^9

[Dusty]

Sigh...

 

[BC_Programmer]

they wanted to introduce the Kibibyte and mibibyte BS because people were getting confused. Well guess what! Now their TWICE as confused because nobody whose been using Megabyte for the last 20 to 30 years wants to suddenly decide to call it a "Mibibyte" Because everybody is confusing standard metric with the non-standard extension of metric that was created to make it easier to measure memory and disk space.


Hard Drive space is an extension of System RAM in that data stored to the disk always comes from RAM. Since RAM uses the power of 2 extension to metric, it only makes sense to use the same term.

you save 1 KB of data to the hard disk from RAM and suddenly it's now 1.024 KB?

When you buy a Hard disk and save 1GB of RAM to it, should it suddenly bloat to 1.024GB?

No- so they introduced their new "standard". Now we reduce confusion because instead of changing the value, it changes the unit measurement.

Memory and all extensions thereof should be measured using the standard metric terms but base 2 exponents. If people are confused by that initially- alright, but they learn. there is no reason to suddenly introduce context sensitive abbreviations with convoluted naming schemes involving modified greek prefixes.

[nymph4]

So all of these would be right.

1 kB = 1,000 Bytes
1 kB = 1,280 Bytes
1 MB = 1,000,000 Bytes
1 MB = 1,024 Bytes
1 MB = 1,048,576 Bytes

[BC_Programmer]

So all of these would be right.

1 kB = 1,000 Bytes
1 kB = 1,280 Bytes X   1KB=1024 bytes
1 MB = 1,000,000 Bytes
1 MB = 1,024 Bytes X  1MB =1024 KB
1 MB = 1,048,576 Bytes

[nymph4]

What di you meen when you just told me
1 kB = 1,280 Bytes   X   1KB=1024 bytes

Are you telling me  1,280 Bytes   Times  1,000 Bytes  = 1,024  Bytes