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OSR5 FAQ


Some material is very old and may be incorrect today

© December 2003 (various)

This article is from a FAQ concerning SCO operating systems. While some of the information may be applicable to any OS, or any Unix or Linux OS, it may be specific to SCO Xenix, Open This is an old article about SCO Unix and is only left here for historical purposes. There is lots of Linux, Mac OS X and general Unix info elsewhere on this site: Search this site is the best way to find anything.

I'm having trouble using my ATAPI CD-ROM (Old Sco Unix)

This is an ancient post with no relevance to modern systems.

The two most common problems are that your "IDE" CD-ROM drive may not follow the ATAPI spec, or that you are unsure of what parameters to enter when asked for the configuration of your drive. Check the drive's documentation, or consult the manufacturer, for the first problem.

The support for ATAPI CD-ROMs in OSR5 is done by using a driver which makes the drive appear to be a SCSI drive, and so you need to enter the same information as for a SCSI drive. The correct answers are as follows:


If all of these have been done correctly and the drive still does not work, try changing its configuration. If it's the master on the secondary host adapter, try making it a slave on the primary, or vice versa.

Also, on some systems there is a conflict with the driver for the Western Digital/Future Domain 7000. If you don't have such a card, and your machine hangs at a line including wdhainit, boot with defbootstr disable=wdha to disable the wdha driver. There have also been reports of conflicts with the dptr and ncr drivers. For more information on disabling drivers, see the section entitled "My kernel locks up at boot time" in section 3.


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