IBM 22P7035 User Manual page 20

DLA is used to make file archives and data CDs that can be altered many
times. It also provides the convenience of direct drive-letter access. When used
with CD-RW media, DLA is very much like using a floppy diskette to store
files. If DLA is used with CD-R media, you can write and rewrite until the CD
is full, and then the data becomes fixed. DLA-created media can be read only
with newer CD-ROM drives and DVD-ROM drives that support multi-read
mode.
A UDF reader might be required when using other computers to read unclosed
DLA media. Install the provided UDF reader on other systems that need to
read the disc, not on yours.
CD-R discs are playable on audio CD players. CD-RW discs are not playable
on most audio CD players.
CD-RW media comes in three different types: normal, High Speed, and Ultra
Speed. Normal media is usually designated 2X or 2X-4X. High Speed Media is
often listed as 4X-10X or 4X-12X and bears the High Speed logo. Ultra Speed
Media is usually listed as 16X-24X and bears the Ultra Speed logo. Your
CD-RW can write to all three types of CD-RW media. If you use High Speed or
Ultra Speed CD-RW media, computers with lower speed CD-RW drives cannot
add data to this media. The following table shows the compatibility of
different media in different drives, along with the logos that are on the drives
and the media.
Media type
2X - 4X media
4X - 12X media
16X - 24X media
1-10
IBM 48X/24X/48X/16X Max CD-RW/DVD-ROM Combination Drive: User's Guide
Read
Write
Read
Read
Drive type
Read
Write
Read
Write
Read
Read
Write
Read
Write
Read
Write