From rlotz@u.washington.edu Fri Feb  4 17:28:06 2000
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Date: Fri, 4 Feb 2000 17:28:02 -0800 (PST)
From: "Richard M. Lotz" <rlotz@u.washington.edu>
To: UW Linux Group <linux@u.washington.edu>
Subject: Re: block devices?
In-Reply-To: <Pine.A41.4.10.10002041614260.80362-100000@dante05.u.washington.edu>
Message-ID: <Pine.A41.4.10.10002041718350.96800-100000@dante31.u.washington.edu>
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The message you are getting is most likely just the kernel telling you
what is on the IDE bus, and its model/vendor info.  Ideally the kernel
should be auto-loading the modules for you (when you try to access
/dev/hdc).  Instead try issuing an `insmod ide-cd && insmod cdrom` to
manually install them.  If that doesn't work you may want to recompile the
stock kernel and add ide cdrom support (not as a module).

You can also poke around /proc to see what is loaded, kernel 2.3.42 has a
and ide directory that lists the devices attached to each channel.
/proc/ide/ide1/hdc should have files in there telling you about the
device.  Kernel 2.2 may be setup differently.

-richard

-----------------------------------------------------------
Richard Lotz				http://sidereus.net
rlotz@u.washington.edu			ICQ: 12348088

On Fri, 4 Feb 2000, R. David Whitlock wrote:

> After installing fresh to someone's machine, no problems with using the
> cdrom or anything, I get the following:
> 
> [root@cartman ~]# mount /dev/cdrom
> mount: /dev/hdc is not a valid block device                                     
> 
> dmesg reports every time I try to mount that the driver is not present.
> 
> [root@cartman ~]# lsmod 
> Module 		Size 	Used by 
> ne2k-pci 	4256 	1 (autoclean)
> 8390 		6436 	0 (autoclean) [ne2k-pci] 
> nls_iso8859-1 	2052 	1 (autoclean)
> nls_cp437 	3580 	1 (autoclean) 
> vfat 		11004 	1 (autoclean)
> fat             33120   1  (autoclean) [vfat]                            
> 
> dmesg reports the following in bootup:
> 
> hda: IBM-DPTA-371360, ATA DISK drive 
> hdc: CR-4804TE, ATAPI CDROM drive
> ide0 at 0x1f0-0x1f7,0x3f6 on irq 14 ide1 at 0x170-0x177,0x376 on irq 15
> hda: IBM-DPTA-371360, 13042MB w/1961kB Cache, CHS=1662/255/63                   
> 
> explicitly stating that the hdc has been located, and I thought, added.
> 
> Anyone got any ideas why /dev/hdc appears to not be a block device (or
> why the heck that error comes up) ?
> 
> Later,
>  David
> 
> 

.