Date: Thu, 14 May 1998 19:22:15 -0700 (PDT) From: Julian Elischer <julian@whistle.com> To: Randall Hopper <rhh@ct.picker.com> Cc: freebsd-questions@FreeBSD.ORG Subject: Re: Rescanning SCSI-Bus without Rebooting? Message-ID: <Pine.BSF.3.95.980514192123.12079A-100000@current1.whistle.com> In-Reply-To: <19980514220155.B20919@ct.picker.com>
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wire down uk0 then just as you'd wire down sd0 then it'll be there whether or not the device is on. On Thu, 14 May 1998, Randall Hopper wrote: > Julian Elischer: > |if your scanner is uk0 then it has already been found and no > |amount of reprobing will write a driver for it. > > I'm pretty green with SCSI internals so please bear with me :-) > > uk0 (the Microtek E6 SCSI Scanner) is found when I boot with the scanner > on. It is "not" found I boot with the scanner off. > > That's the whole reason I need that unit rescan to work. I want to avoid > leaving the scanner on all the time (shortens lamp life), and I'd rather > not reboot (to configure uk0) everytime I have a need to use it. I hope > that makes sense. > > |uk stands for "unknown" > |there is no scanner driver > | > |did it come up as uk0 in the dmesg? > > Yes, but only when the scanner is on. > > |if so you ar ewher eyou wnt to be.. > |if not then do as the example you quote says > |AND USE sd0! > > Can I use sd0 (SCSI Disk?) for a SCSI device that reports itself as a > "Scanner"? > > |you cannot use uk0 until IT HAS BEEN FOUND > |so you need to ask the scsi system via some OTHER scsi device that > |actually exists. > > Ok. So there's something fundamentally different about the uk driver. I > assumed (wrongly) that it was a "generic" SCSI driver with a minimal > implementation that could be treated like any other SCSI device for generic > SCSI operations. > > So, what device is recommended for use in this case where you want to wire > a known scanner device down? > > Thanks, > > Randall > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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