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Newsgroups: comp.unix.bsd.freebsd.misc Path: euryale.cc.adfa.oz.au!newshost.carno.net.au!harbinger.cc.monash.edu.au!munnari.OZ.AU!news.ecn.uoknor.edu!news.wildstar.net!newsfeed.direct.ca!portc01.blue.aol.com!cliffs.rs.itd.umich.edu!howland.erols.net!EU.net!sun4nl!Utrecht.NL.net!news.iaf.nl!news.es.iaf.nl!yedi!wilko From: wilko@yedi.iaf.nl (Wilko Bulte) Subject: Re: does freebsd support scsi cdrom with 1024 bytes block transfers? Organization: Private FreeBSD site - Arnhem, The Netherlands Message-ID: <E3CCvv.rB@yedi.iaf.nl> References: <32C8C93D.72A8@direct.ca> <5abpis$d3a@flea.best.net> <5ac2iq$4vs@raven.eva.net> Date: Wed, 1 Jan 1997 18:04:42 GMT Lines: 29 Xref: euryale.cc.adfa.oz.au comp.unix.bsd.freebsd.misc:33479 jca@bighorn.accessnv.com (J.C. Archambeau) writes: >Matt Dillon (dillon@flea.best.net) wrote: >:: In article <32C8C93D.72A8@direct.ca>, >:: Peter Schiller <schiller@direct.ca> wrote: >:: >I hope Iam wording this question correctly. I have a >:: >pioneer scsi cdrom with a jumper that allows me to >:: >switch between 512bytes and 1024 bytes block transfers. >:: >Will FreeBSD work in 1024 bytes mode? >: This sounds like some weird pioneer thing. The block size is >: mostly meaningless as far as SCSI performance goes. I >: wouldn't touch it. >Both of my Plextors (PX-63CS and PX-83CS) have a jumper for block mode. >The manual states that it's for booting Unix from CD-ROM. It doesn't >mention anything more than that. Is this for workstations or for Intel >PC based Unixes as well? Is FreeBSD even bootable from CD-ROM? FreeBSD is not currently bootable from CDROM. My guess would be that it is for booting systems that only knew about 1024 byte/block harddisks and treated CDs just like HDs. Sun did something similar but used 512 bytes/sec for their CD drives. CDs normally are 2048 bytes/sec Wilko