This dialog is used for configuring CDFS.IFS.

For introductory information about file systems, select from the following list:

Press "Optimize" to have &xwp; propose you new, optimized settings.

Press "Default" to have the &os2; default settings displayed on the notebook page.

By pressing "OK", the selections you made will be translated into the "Parameters" field on the "Drivers" page in the "&os2; Kernel" properties notebook. This does not change your &cfgsys; yet. To do that, press "Apply" on the "Drivers" page after pressing "OK" in this dialog.

It is strongly recommended to enable Joliet support. This is Microsoft's extension of the ISO standard CD-ROM file system to support long file names (up to 64 characters) on CD-ROMs also. Many newer CD-ROMs are unreadable on &os2; if this setting is not enabled.

Kanji adds additional support for the Japanese language.

The "cache size" slider sets the size of the CD-ROM file system cache. The default of 128 KB is not a whole lot, so it is recommended to set this to 512 KB or higher. Since the read head of a CD-ROM drive is a lot slower than those of a hard disk, a larger cache can really speed up CD-ROM reading.

For the same reason, you should set the "File sectors to read at a time" to the maximum value. This setting determines how many sectors are read in when a single sector is requested from the file-system driver. Since it is likely that not only one sector, but the following sectors will also be read when a CD-ROM is accessed, the following sectors will already be in the cache, which reduces physical access to the CD-ROM also. Finally, the settings in the "Initialization" group determine what the IFS driver displays at startup. Per default, it will give a short message that it has been loaded. "Quiet" will force it to display nothing, while "Verbose" will have it display the current IFS settings, as specified above.