how to Edit ECC code

[discover]

Hi , can I change the ECC code for a block of a file stored on a flash drive by any means ? of a file stored on a HDD (though I don't think there would be a difference between the two)

Maybe , through some hardware interrupts or anything like that?

Also if possible I need the solution to be in C/C++.

thanks

[Rubberman]

School work? In any case, I'm not sure you can change the ECC code on a disc block as it is usually added and checked by the disc controller. Ie, it is a hardware thingy. Also, helping with school assignments is prohibited in the terms of use for these forums.

[discover]

School work? In any case, I'm not sure you can change the ECC code on a disc block as it is usually added and checked by the disc controller. Ie, it is a hardware thingy. Also, helping with school assignments is prohibited in the terms of use for these forums.

Thanks for the reply.

this is not a school work. i have this kind of requirement in my project.

Is there any way (hardware interrupts or anything) which allow us to change ecc code.

Your help is highly needed.

[Rubberman]

Sorry. Never needed to get into block-level ECC code for disc storage, other than in the theoretical aspects of it. Most use Reed-Solomon codes for error correction. ECC RAM usually uses some variety of Hamming codes. It either case, the ECC encoding/decoding is embedded in the controller hardware for performance sake. If you need additional protection, then you could embed a code in a data block with the block I/O device driver software. Is that what you want to do? Note that if you do that, then only your driver, or one that has the same capability, would be able to read the data back.