Re: CD/DVD drive not in /dev/

["Mad Marty" <madmarty@gmail.com>]

>
> What does ls /proc/ide say?  Look for a drive there that's not hdb.  The
> kernel sees your drive iff it's listed in /proc/ide.

$ ls /proc/ide
drivers  hdb  ide0  sis

Doesn't look hopeful...


$ cat /proc/ide/sis

SiS 5513 Ultra 133 chipset
--------------- Primary Channel ---------------- Secondary Channel
-------------
Channel Status: On                               Off
Operation Mode: Compatible                       Compatible
Cable Type:     80 pins                          40 pins
Drive 0:
                UDMA Enabled                     UDMA Disabled
                UDMA Cycle Time    8 CLK         UDMA Cycle Time
Reserved
Drive 1:
                UDMA Enabled                     UDMA Disabled
                UDMA Cycle Time    2 CLK         UDMA Cycle Time
Reserved

To me, this kinda suggests that nothing is attached to the secondary
channel.  It also doesn't agree with two of the lines in dmesg:

 SIS5513: SiS 962/963 MuTIOL IDE UDMA133 controller
    ide0: BM-DMA at 0xa400-0xa407, BIOS settings: hda:DMA, hdb:DMA


>
> Note that it's not a good idea to put your hard drives and optical drives on
> the same IDE controller.  The optical drive is much slower and will slow
> down the whole channel => your hard drive too.  If all you have is one hard
> drive and one optical, put them on separate IDE controllers, e.g. primary
> master and secondary master.
>

I agree - but I don't have much choice.  I only have one controller on
this board - I'm using an ASUS Pundit book style PC.  I will try
playing around with the BIOS, to diable DMA or something, and see if
that helps.

Thanks very much for your help.

Martin