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| Posted by | Dennis |
| Posted on | 12/02/03 19:16 |
It happens to all of us sooner or later: a disc is scratched and cannot be read properly anymore... In this test we took a CD-Recordable and (heavily) scratched it with some fine sandpaper. We then did a surface scan with Nero CD Speed and you can see the results below. First off let's start with the ATIP information from the used CD-Recordable:
- ATIP: 97m 15s 11f
- Disc Manufacturer: Ritek Co.
- Reflective layer: Dye (Long strategy; e.g. Cyanine, Azo etc.)
- Media type: CD-Recordable
- Recording Speeds: min. unknown - max. unknown
- Nominal Capacity: 702.83MB (79m 59s 74f / LBA: 359849)
Now for the achieved results. We read the disc with the Plextor PX-W4012S drive and then read the same disc with various other drives for comparison. You can see the result of the Plextor drive in the screenshot below. Please note that damaged sectors can still be read. The important percentage is the one of the unreadable sectors. Of course the less, the better:
Plextor PX-W4012S reading scratched disc
In the table below we've summed up our test results comparing them to other drives we've previously reviewed. Again, keep in mind that the important percentage is the one of the unreadable sectors. Of course the less, the better:
| Scratched Disc | Good | Damaged | Unreadable | ||||
| VisionTek | 36.89% | 44.41% | 18.70% | ||||
| PleXCombo | 64.58% | - | 35.42% | ||||
| Mitsumi | 59.87% | - | 40.13% | ||||
| Plextor | 42.63% | 11.91% | 45.45% | ||||
| Plextor | 35.95% | 8.78% | 55.28% | ||||
| Yamaha | 37.72% | - | 62.28% | ||||
| The grey area's indicate the least amount of unreadable sectors - : drive cannot report damaged sectors | |||||||
Low Quality Disc:
To add a little more to our scratched data reading tests we've added another test for you. We wrote a low quality 74 minute CD-Recordable using the VisionTek Xtasy 48X drive and Nero Burning Rom. We disabled its SMART-BURN feature so errors would probably be created. The ATIP information from the used CD-Recordable:
- ATIP: 97m 31s 01f
- Disc Manufacturer: unknown
- Reflective layer: Dye (Long strategy; e.g. Cyanine, Azo etc.)
- Media type: CD-Recordable
- Recording Speeds: min. unknown - max. unknown
- Nominal Capacity: 656.69MB (74m 45s 00f)
We then scanned the disc with Nero CD Speed using various drives we've previously reviewed. You can see a screenshot of the Plextor PX-W4012S drive reading the low quality disc below
Plextor PX-W4012S reading low quality disc
In the table below we've summed up our test results again, comparing them to other drives we've previously reviewed. Again, keep in mind that the important percentage is the one of the unreadable sectors. Of course the less, the better:
| Scratched Disc | Good | Damaged | Unreadable | ||||
| Plextor | 99.89% | 0.11% | 0.0% | ||||
| Plextor | 99.44% | 0.56% | 0.0% | ||||
| VisionTek | 59.44% | 40.56% | 0.0% | ||||
| PleXCombo | 89.49% | - | 10.51% | ||||
| TEAC | 66.21% | 11.75% | 22.03% | ||||
| Mitsumi | 60.34% | - | 39.66% | ||||
| Yamaha | 48.81% | - | 51.19% | ||||
| The grey area's indicate the least amount of unreadable sectors - : drive cannot report damaged sectors | |||||||
Audio Read Tests
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1) IF I make an order of two to three pcs, can you provide me certain discount?
2) Is your product brand new or second-handed?
3) You know, I'm in China, can you tell me where you are so that I can calculate the frieght, OK?
4) Can you contact me by mail for further discussion?
My E-mail is power_servo_gz@yahoo.com
Looking forward to your soonest reply.
My Best Regards,
Rebecca
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