Thanks Durai! My thoughts were like this:

- shutdown the db

- move the files from this disk/drive(X) to another temporary disk/drive(Z)

- perform whatever maintenance to this disk drive X such as format, replace, etc...

- once maintenance is done, ensure the disk drive X is available;

- copy the temp files back from Z to the disk drive X

- startup the db

Will this work!?

Thanks..