If we have to open any page on our memory and if it is modified, then there is a use of Dirty Bit.

Dirty bit normally show the pages which are modified after loaded in Cache memory. If there is any page which is loaded in our Chahe memory and if it is modified, then it is done by Dirty bit.

Dirty Bit is an Automatically process which is started automatically after modification of page in cache memory.

The Page which is Modified Automatically in the cache memory is Automatically Changed with the help of Dirty bit.