IBM 20X - Manual (Page 17)

You cannot read from the CD after successfully writing to it.
Take the following actions:
1. If you can read the CD in another CD player or you can see previous
sessions, the directory information might be damaged on the volume, making
it unreadable. Check the documentation that comes with the Adaptec Easy
CD Creator/Direct CD software for troubleshooting ideas.
2. You might have a damaged CD-R or CD-RW disc. Try a new CD-R disc or
CD-RW disc, or another brand of CD.
3. If you can read from a CD-RW disc in the writing drive, but not in another
MR drive, be sure that a UDF Reader program is installed in the computer.
For more information on installing the UDF Reader program, go to
“Installing the Easy CD Creator/DirectCD software” on page 1-6.
4. Avoid writing at the slower 1X speed unless required by your computer.
Part 1: Installation and user’s guide 1-11