Fatal error recovery

-- Doggy Fatal Error Recovery Program

function reinstallOS()
    if fs.exists("/disk/") and fs.exists("/disk2/") then
        fs.delete("/disk/")
        fs.copy("/disk2/", "/disk/")
        print("Doggy OS reinstalled successfully.")
    else
        print("Error: /disk/ and /disk2/ must exist for OS reinstallation.")
    end
end

function reinstallBootloader()
    if fs.exists("/startup/") and fs.exists("/disk/") and fs.exists("/disk2/") then
        fs.delete("/startup/")
        fs.copy("/disk/boot/error", "/startup/")
        print("Bootloader reinstalled successfully.")
    else
        print("Error: /startup/, /disk/, and /disk2/ must exist for bootloader reinstallation.")
    end
end

function createBackup()
    if fs.exists("/disk/") and fs.exists("/disk2/") then
        fs.copy("/disk/", "/backup/")
        print("Backup created successfully.")
    else
        print("Error: /disk/ and /disk2/ must exist for backup creation.")
    end
end

function recoveryFromBackup()
    if fs.exists("/disk/") and fs.exists("/disk2/") then
        fs.delete("/disk/")
        fs.copy("/backup/", "/disk/")
        print("Recovery from backup successful.")
    else
        print("Error: /disk/ and /disk2/ must exist for recovery from backup.")
    end
end

function deleteBackup()
    fs.delete("/backup/")
    print("Backup deleted successfully.")
end

function powerOptions()
    print("Select power option:")
    print("1. Reboot")
    print("2. Shutdown")
    print("3. Eject disk and shutdown")

    local choice = read()

    if choice == "1" then
        os.reboot()
    elseif choice == "2" then
        os.shutdown()
    elseif choice == "3" then
        print("Ejecting disk...")
        -- Perform disk ejection logic if needed
        os.shutdown()
    else
        print("Invalid choice.")
    end
end

-- Main program
while true do
    print("Doggy Fatal Error Recovery Program")
    print("1. Reinstall Doggy OS")
    print("2. Reinstall Bootloader")
    print("3. Create Backup")
    print("4. Recovery from Backup")
    print("5. Delete Backup")
    print("6. Power Options")

    local choice = read()

    if choice == "1" then
        reinstallOS()
    elseif choice == "2" then
        reinstallBootloader()
    elseif choice == "3" then
        createBackup()
    elseif choice == "4" then
        recoveryFromBackup()
    elseif choice == "5" then
        deleteBackup()
    elseif choice == "6" then
        powerOptions()
    elseif choice == "7" then
        print("Exiting Doggy Fatal Error Recovery Program.")
        break
    else
        print("Invalid choice. Please try again.")
    end
end