} else {
				rootDrive, err = disk.IsRootDisk(drivePath, SlashSeparator)
			}
		}
	}

	switch {
	case osIsNotExist(err):
		err = errDiskNotFound
	case isSysErrTooLong(err):
		err = errFileNameTooLong
	case isSysErrIO(err):
		err = errFaultyDisk
	}

	return di, rootDrive, err
}

// Implements stringer compatible interface.