Logic in Disk Defragmantation & Disk Check

Question

What is the logic behind disk defragmentation and Disk Check in Windows? Can I do it using C# coding?

Answer 1

For completeness sake, here's a C# API wrapper for defragmentation:

http://blogs.msdn.com/jeffrey_wall/archive/2004/09/13/229137.aspx

Defragmentation with these APIs is (supposed to be) very safe nowadays. You shouldn't be able to corrupt the file system even if you wanted to.

Commercial defragmentation programs use the same APIs.

Answer 2

Look at Defragmenting Files at msdn for possible API helpers.

You should carefully think about using C# for this task, as it may introduce some undesired overhead for marshaling into native Win32.