Date: Fri, 11 Aug 95 12:12:44 MDT From: terry@cs.weber.edu (Terry Lambert) To: bsd@jaguar.cris.com (BSD Mailing List) Cc: freebsd-questions@freebsd.org Subject: Re: Multidisc SCSI CD Rom Drives & More Message-ID: <9508111812.AA07913@cs.weber.edu> In-Reply-To: <199508111017.KAA01337@jaguar.cris.com> from "BSD Mailing List" at Aug 11, 95 10:17:15 am
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> Hi everyone! I am a recent FreeBSD convert from Linux, and I'm very impressed > with the product so far. I have a few questions. > > 1) FreeBSD detects the first disc in my Pioneer DRM-602X SCSI 6-disc > cdrom drive, but doesn't check for more discs in the unit. Does FreeBSD > support the full capacity of this (and other multi-disc drives), and if so, > how can I get it working properly? Look in the file /usr/src/sys/i386/conf/LINT. In it you will see a device named "ch0". You need to add one of these to your kernel. > 2) Last night, I recompiled the kernel as documented in the FAQ, and > changed some of the default devices (ie. removed some I didn't need, > adjusted the IRQs to my network card, etc). When the kernel boots, I > get the following panic message: > > pmap_zero_page: CMAP BUSY > kernel panic > > This happens (it appears) as FreeBSD is displaying the devices on the > system. Diff your config file and /usr/src/sys/i386/conf/GENERIC. Your old kernel should still be there, so make sure you save it (boot /kernel.old and copy it to /kernel.goo in case you have to build several kernels). The diff should tell you what went wrong/what you left out. Terry Lambert terry@cs.weber.edu --- Any opinions in this posting are my own and not those of my present or previous employers.
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