I have to erase a file permanently by using Gutmann Algorithm,
I studied Gutmann algorithm and learned that it deletes a file after 35 passes, in which in first 4 and in the last 4 passes random values are written to buffer and in the rest 28 passes RLL & MFM technique is used to write the data in to the buffer.
Here I'm not getting RLL & MFM.
So Please explain these terms, and I will be grateful if provide some code snippets for the same.
Please help me