unmnt.lua

--unmnt

diskDriveId = "computercraft:disk_drive"
defaultDir = "/tmp/disk/"

local driveSlot = 16
local floppySlot= driveSlot - 1

function getBlock(inspectInDirection)
        a,b = inspectInDirection()
        local name = b.name
        return name
end

function getSideWith(bockName)
        local up  = getBlock(turtle.inspectUp)
        local down= getBlock(turtle.inspectDown)
        local fwd = getBlock(turtle.inspect)

        if up == bockName then
                return "up"
        elseif down == bockName then
                return "down"
        elseif fwd == bockName then
                return "fwd"
        else
                return "none"
        end




end

function digSideWithDrive()
        local side = getSideWith(diskDriveId)
        if side         == "none" then
                error("disk drive not found")

        elseif side == "down" then
                turtle.digDown()
        elseif side == "fwd" then
                turtle.dig()
        elseif side == "up" then
                turtle.digUp()
        end
end

turtle.select(floppySlot)
digSideWithDrive()
shell.setDir(defaultDir)