Date: Sat, 16 Dec 1995 05:31:03 +1100 From: Bruce Evans <bde@zeta.org.au> To: d_burr@ix.netcom.com, freebsd-questions@FreeBSD.ORG Cc: freebsd-scsi@FreeBSD.ORG Subject: Re: question about Message-ID: <199512151831.FAA25465@godzilla.zeta.org.au>
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>Why does FreeBSD print "not ready", etc. for my CD-ROM, as evidenced by >the following extract from dmesg: Because the CD-ROM drive isn't ready :-). >... >(aha0:2:0): "TOSHIBA CD-ROM XM-3501TA 2694" type 5 removable SCSI 2 >cd0(aha0:2:0): CD-ROM >cd0(aha0:2:0): NOT READY asc:4,1 >cd0(aha0:2:0): Logical unit is in process of becoming ready >can't get the size >I'm just curious why these messages are displayed, if they are an >indication of something about to break, or if it's just one of those >little quirks that people live with. The driver resets the device (and/or the SCSI bus?) and some devices take a looong time to become ready. The device driver only waits a long time for SCSI devices to become ready. This is controlled by options SCSI_DELAY=nnn # nnn is 15 for GENERIC in the kernel config file. I use 8, which is this smallest value that avoids the above error message here. The drive LED indicator showed reliably when the drive was ready. Bruce
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