diff --git a/src/calibre/devices/winusb.py b/src/calibre/devices/winusb.py index 0fa149ac57..a8f56a3138 100644 --- a/src/calibre/devices/winusb.py +++ b/src/calibre/devices/winusb.py @@ -775,7 +775,7 @@ def get_drive_letters_for_device(usbdev, storage_number_map=None, debug=False): ans['readonly_drives'].add(dl) except WindowsError as err: if debug: - prints('Failed to get readonly status for drive: %s' % dl) + prints('Failed to get readonly status for drive: %s with error: %s' % (dl, as_unicode(err))) return ans