A.P. Lawrence

mkdev hd fisk no such device

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Date: Tue, 27 Nov 2001 17:06:36 -0500
From: Tony Lawrence <tony@aplawrence.com>
Subject: Re: SCSI Hard Drive References: <u082idmfu8ppa7@corp.supernews.com>

Ron wrote:
> 
> I'm trying to install an additional hard drive. The drive is a Seagate
> ST15150W. When I attempt to run mkdev hd for the second time to initialize
> the drive I get the following:
> 
> /etc/fdisk: cannot open /dev/rdsk/1s0 for reading no such device or address
> (error 6)
> /etc/fdisk failed

I suspect you may be confused as to what the first invocation of mkdev
hd did, which really was nothing more than to trust you: in other words,
you said "there's a scsi disk attached to this controller and it has
this id, etc." and mkdev hd said "Kewl- I'll add that to
/etc/conf/cf.d/mscsi and build a new kernel which can access that".

But that's all it does.  It doesn't even bother to run sconf -v to see
if any hardware remotely like what you described is out there.

The second invocation (after rebooting) really goes out and tries to
access the physical hardware.  Apparently it doesn't find the drive.  
That could be because (just listing a few things I've done or not done)

o You forgot to plug in the power
o You forgot the cable- at one end or the other
o You forgot the cable completely (ayup, I did that!)
o You misidentified the adaptor bus, the scsi id, the lun- or all of
'em.
o You misidentifed which driver to use- arad, alad, what's the
difference?    Hate to say how many times I've done that..
o You really installed a tape drive (I didn't actually do that but I
came very, very close to it once.  But I have, at least twice, installed
a tape drive in a hard drive bay where there was no opening to the
outside world to put the tape in..)

If this is 5.0.5 or better, run sconf -v and see if it sees your
hardware and that it matches what you (or mkdev hd) put in
/etc/conf/cf.d/mscsi.  If it doesn't, you can just manually edit mscsi,
relink, and reboot.

--
Tony Lawrence
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