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Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!comp.vuw.ac.nz!usenet From: Milton Ngan <Milton.Ngan@comp.vuw.ac.nz> Newsgroups: comp.unix.bsd.freebsd.misc Subject: Re: ATAPI CDROM Help needed: "atapi0.1: unknown phase" Date: 29 Oct 1996 09:22:32 +1300 Organization: Dept. of Computer Science, Victoria Uni. of Wellington, NZ. Lines: 38 Sender: milton@rialto.comp.vuw.ac.nz Message-ID: <ch4eniizvnb.fsf@rialto.comp.vuw.ac.nz> References: <550cf7$9ka@umcc.umcc.umich.edu> <3273DBAD.33D5@best.com> NNTP-Posting-Host: rialto.comp.vuw.ac.nz X-Newsreader: Gnus v5.3/Emacs 19.33 Burton Sampley <bsampley@best.com> writes: > Kelvin Li wrote: > > > > I'm still having trouble getting my IDE CDROM to become a device > > that I can mount. Does anyone know what I need to do when I get > > this message on startup? > > > > wdc0: unit 1 (atapi): <NEC CD-ROM DRIVE:282/3.04>, > > removable, dma, iordy > > atapi0.1: unknown phase > > > I had a similar problem. I was attemping to load FBSD 2.1.5 from > the Walnut Creek CDROM. I spoke to Jorden Harbert (Please forgive > me if I mis-spelled your name Jorden). When I told him that I would > get the message "unknown phase" he said FBSD could not "read/use" my > cdrom. I had a cheap 2X IDE (generic brand) cdrom. My solution was > to purchase a new IDE cdrom. I found a Sony CDU311 8X EIDE cdrom > for about $105.00 USD at a local computer shop. That solved the > problem. I hope this helps. Oh, one other thing, make sure the > cdrom drive is the slave drive. I've heard this is the only way > FBSD can use an IDE cdrom (don't quote me on this fact, as I have no > proof this is true) This problem is caused by older "cheap" CD-ROM Drives, but there is a work around. I submitted a patch to the author of the driver. I am not sure if it has made its way in to the FreeBSD tree yet. If people want it. I can post it. Basically it is a timing problem. The CD-ROM indicates that it has something for your computer, but it doesn't set the phase correctly until a little while after. So a simple delay loop until the phase gets itself sorted out works wonders. There are other problems with the audio support, but it has nothing to do with this :) M.