byte[] zeroFileId = new byte[16];
            testFileIdReading(zeroFileId);

            // Test with all ones
            byte[] onesFileId = new byte[16];
            Arrays.fill(onesFileId, (byte) 0xFF);
            testFileIdReading(onesFileId);

            // Test with pattern
            byte[] patternFileId = createTestData(16);
            testFileIdReading(patternFileId);
        }