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To round off this review, we will run some advanced tests on the Memorex DVD+/-DL4RWlD2. These tests are: 'Sheep Test" and Overburning test.

Copy protected data discs:

For this test, we will use the Sheep tests made by Alexander Noé. Why is it called sheep test? That's because the logo of the first 1 to 1 copy program called CloneCD is a sheep. When looking at supported writers, you will notice that the feature list has sheep to indicate if a feature is supported or not. In this case we are interested in the writer's ability to backup/write weak sectors. Also called: 'Correct EFM encoding of regular bit-patterns".

• No sheep: Can't backup any safedisc 2 versions without the help of software tricks
• 1 Sheep: Can backup safedisc 2 up to version 2.4x without software tricks
• 2 Sheep: Can backup safedisc 2, including version 2.5x
• 3 Sheep: Can write all possible weak sectors, few if any writers could do this.

One of our forum moderators Womble has written a guide concerning the 'Sheep Test" that could be found here.

In the screenshot below taken from CloneCD v5.1.0.0, we see the Memorex DVD+/-DL4RWlD2 supports everything.

The Memorex DVD+/-DL4RWlD2 supports DAO-RAW96 recording mode, which basically means, it can write uncorrected data and subchannel data. The drive used to verify that the tests work is a  Plextor DVDR PX-712A. Below are the results from the 'Sheep Tests":

As we can see from the table the Memorex DVD+/-DL4RWlD2 is a 'Two Sheep Burner", but failed to write the Safedisc V2.90 and Sheep3 tests.

Overburning:

To test the overburning capabilities of the Memorex DVD+/-DL4RWlD2, we used the overburning test in Nero CD/DVD-Speed. According to Nero CD/DVD speed the drive can overburn disc larger then 99/100 minutes.

Now, that concludes our Memorex DVD+/-DL4RWlD2 review, head on to the last page to read our conclusion…