wipe

tape = peripheral.find("tape_drive")
d = false
run = false
t = 0
if tape then
    function wipe(s)
        for i=1,500000 do
            if t < s then
                term.setCursorPos(1,5)
                term.write(t.."/"..s)
            else
                term.setCursorPos(1,5)
                term.write(s.."/"..s)
                term.setCursorPos(1,6)
                term.write("Wrapping up..."..t)
            end
            tape.write(0)
                t = t + 1
        end
    end
    if tape.isReady() then
        run = true
    else
        print("Please insert a tape to use this program.")
    end
else
    print("This program requires a tape drive to function.")
end
if run then
    size = tape.getSize()
        term.clear()
        term.setCursorPos(1,1)
        term.write("Are you sure you want to format this tape?(Y,N)")
        print("(this might take a while)")
        term.setCursorPos(1,3)
        input = read()
    if input == ("y") or input == ("yes") or input == ("Y") or input == ("Yes") then
        tape.seek(-size)
        tape.seek(-8000)
        term.setCursorPos(1,4)
        term.write("Phase 1:")
        wipe(size)
        sleep(.5)
        if t < size then
            term.setCursorPos(1,4)
            term.write("Phase 2:")
            wipe(size)
        end
        tape.seek(-size)
        tape.seek(-8000)
        d = true
    else
        print("Aborted.")
    end
end
if d then
    term.setCursorPos(1,7)
    term.write("Done!")
    term.setCursorPos(1,8)
end