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Introduction
1. Installing CDRoller
2. Uninstalling CDRoller
3. Opening and Closing CDRoller
4. How to register the program
5. How to upgrade CDRoller
6. Recovering CD/DVD/BD Data
Overview
6.1. Disk recognition
6.2. Using Session Selector
6.3. Searching the lost UDF files on CD-R/DVD-R/DVD+R disks
6.4. Applying Scan UDF Disc
6.5. Recovering files
6.6. Recovering DVD video and photos
6.7. Recovering files from UDF discs in ISO mode
6.8. Retrieving the photos from mini discs created by Sony Mavica CD cameras
6.9. Identifying Raw ISO Data
6.10. Burning recovered data
7. Additional features
Overview
7.1. Testing Disc
7.2. Extracting Audio Tracks
7.3. Extracting ISO Image File
7.4. Creating Short CD/DVD image
7.5. Examining disc sectors at low level
7.6. Recovering flash data
8. FAQs
8.1. License and purchase
8.2. Installation
8.3. Opening CDRoller
8.4. Recovering disc data
8.5. Reading mini DVD-R discs created by Hitachi DVD camcorders
8.6. Retrieving the photos from mini discs created by Sony Mavica CD cameras
8.7. Recovering video data off the discs created by DVD recorders (standalone devices)
8.8. Reading mini DVDs created by Sony DVD Camcorders
8.9. General Questions
8.10. Troubleshooting
9. Customer Support
9.1. Contacting Technical Support
Annex A Controls and dialog boxes
A.1. Main Window
A.2. Main Menu Commands
A.3. The Toolbars
A.4. Preferences
A.4.1. Browser
A.4.2. UDF Reader
A.4.3. ISO Reader
A.4.4. CD/DVD Library
A.4.5. Audio Extraction
A.4.6. Disc Test
7.1. Testing Disc
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With the help of Disc Test, you can check if a disc contains errors. It can be useful to:
- Check the quality of the CD/DVD/BD media.
- If you have a CD/DVD/BD recorder, you can check whether the data (files and folders) on the disc are written correctly.
- Get advanced information from the Disc Volume.
The test can be used for both data and audio dscs. It also examines Multisession and Mixed mode discs.

The list of tests includes ISO 9660 File System test, Disc Surface test and Digital Audio Extraction (DAE) Quality test. Since the program automatically determines the disc type, it always knows what the test from the list can be applied to the CD/DVD/BD inserted into the drive. With the help of Disc Test options, you can manually include (exclude) an appropriate test to (from) the list, set scan ratio while testing the disc surface and also select tests of all sessions or only current session on multisession disc.

We recommend you to run the disc test periodically on the discs with ISO/Joliet file systems, in order to make sure a valuable files were really ("physically") placed on the disc, particularly in the following situations:
- if your DVD was created by Nero Burning ROM / Nero Express.
- if your CD with photos was burnt from memory cards.

To start the disc test, please select the Test Disc option in the Tools menu. The program displays a progress dialog similar to the one shown here.

testprogress

After all tests have completed, the program generates the report(s). An example of ISO/Joliet File System report is shown here.

testreport

Note. The Disc Test is not available for the UDF disks.