Except for the very earliest of the Tandy disk drives, there are NO 35 track drives. All 5.25" drives should be capable of 40 tracks minimum. What is the model number of your disk drive, Diego? -- Regards, Bob Devries. Dalby, Queensland, Australia. Faith isn't faith until it's all you're holding on to. http://www.home.gil.com.au/~bdevasl