Modified boot menu (quickmuffin's code)

--[[> Copyright XenusSoft 2020 <]]--
--[[>  Use of file is allowed. <]]--

local isRunning = true

local function runRecovery()
  shell.run("/disk/bootloader/recovery")
  isRunning = false
end

parallel.waitForAny(
  function()
    --< code here >--
    sleep(8) -- remove this, just for show
  end,
  function()
    local title = "Booting CraftOS..." -- Change title to what you prefer for the bootup.
    local w, h = term.getSize()
    local wm, hm = w / 2, h / 2

    term.setBackgroundColor(colors.white)
    term.setTextColor(colors.black)
    term.clear()
    term.setCursorPos(wm - (#title / 2), hm)
    term.write(title)
    sleep(1)

    while isRunning do
      for i = 1, 2 do
        term.setBackgroundColor(colors.black)
        term.setTextColor(colors.lightGray)
        term.clear()
        term.setCursorPos(wm - (#title / 2), hm)
        term.write(title)
        sleep(0.025)

        term.setBackgroundColor(colors.black)
        term.setTextColor(colors.gray)
        term.clear()
        term.setCursorPos(wm - (#title / 2), hm)
        term.write(title)
        sleep(0.025)

        term.setBackgroundColor(colors.black)
        term.setTextColor(colors.lightGray)
        term.clear()
        term.setCursorPos(wm - (#title / 2), hm)
        term.write(title)
        sleep(0.025)

        term.setBackgroundColor(colors.black)
        term.setTextColor(colors.white)
        term.clear()
        term.setCursorPos(wm - (#title / 2), hm)
        term.write(title)
        sleep(0.025)
      end

      term.setBackgroundColor(colors.black)
      term.setTextColor(colors.white)
      term.clear()
      term.setCursorPos(wm - (#title / 2), hm)
      term.write(title)
      sleep(2)
    end
  end
)

term.clear()
term.setTextColor(colors.white)
term.setCursorPos(1, 1)

-- Listen for the Enter key press
while isRunning do
  local event, key = os.pullEvent("key")
  if event == "key" and key == keys.enter then
    runRecovery()
  end
end