Date: Tue, 25 Jun 1996 09:31:59 -0700 (PDT) From: "Rodney W. Grimes" <rgrimes@GndRsh.aac.dev.com> To: rg@gds.de (Richard Gresek) Cc: freebsd-isp@freebsd.org Subject: Re: AHA 2940UW Problem Message-ID: <199606251631.JAA10160@GndRsh.aac.dev.com> In-Reply-To: <199606250701.HAA14101@gds.de> from Richard Gresek at "Jun 25, 96 11:46:04 am"
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> We use the AHA2940UW with two 4GB Quantum-Atlas disks. > > We have the problem that FreeBSD cannot boot from the UW-SCSII-disk. > We get the messagen "missing operating system". For now, the machine > got a IDE-disk with a root-partition and the kernel on it to make > the system boot. > > Has anybody some idea what the cause is and how to solve this? More than likely there is a difference between what the BIOS thinks the translation of your drive is and what FreeBSD thinks it is. On a 2940xx this is often caused by an incorrect setting of the SCSISelect advanced option menu item ``support drives >1G''. If this is set to ``no'' the fdisk/disklabel output should show the drive as a 32 sector 64 head drive, if set to ``yes'' the drive should be 255 sector 63 head drive. The output of fdisk /dev/rsdX would tell me quickly which way your controller should be set. The most common way that this happens is moving drives between controllers that have this option set differently. -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Reliable computers for FreeBSD
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