How to calculate hard disk cluster size?

Question

PHP

You need to make a page for calculating the cluster size.
What formula is used to calculate this size?
Are there similar sites to look at the implementation?
Thank you.

Answer 1

I have a counter question - what does PHP have to do with it?

Answer 2

What are you going to calculate? There is a physical size of the classter. There is one that is set for the file system. If the files are small - select the minimum cluster size equal to the physical one. If the files are large - more.