cdrom and cdrw

cdrom and cdrw

[Cheryl Homiak]

I'm a little confused even after reading all the docs so I could use some help
here.
I have an ide/atapi cdrom, which I have loaded as scsi because i'm getting ready
to get a cdrw in addition to the cdrom. Here are my questions:
1. Does placement of the cdrw and cdrom matter. The person installing wants to
put them on separate ides as he says this can make the cdrw slightly faster.
this means that one of them has to be hdb and the other has to be hdc or hdd (I
would think hdc). Is it better to put the cdrw as single or primary and let the
cdrom be the slave on my first ide?
2. Does this mean that i set up both the cdrom and the cdrw as scsi? I think I
read that if you compile both scsi and atap/ide into the kernel the atapi/ide
will take over which I don't want for the cdrw for sure.
3. If both are to be scsi, should my cdrw be scd0 and my cdrom scd1 or does this
matter?
4. What symlinks do I do? Right now I have /dev/cdrom linked to scd0, but is
this where the cdrw should be linked? Do I make an additional directory and
mount point so that both can be mounte?
Thanks.

Re: cdrom and cdrw

[Gregory Nowak]

You don't need to set up the cdrom as a ide-scsi device. This is only required for the cdrw.
Greg


On Tue, Mar 26, 2002 at 10:52:16AM -0600, Cheryl Homiak wrote:
> I'm a little confused even after reading all the docs so I could use some help
> here.
> I have an ide/atapi cdrom, which I have loaded as scsi because i'm getting ready
> to get a cdrw in addition to the cdrom. Here are my questions:
> 1. Does placement of the cdrw and cdrom matter. The person installing wants to
> put them on separate ides as he says this can make the cdrw slightly faster.
> this means that one of them has to be hdb and the other has to be hdc or hdd (I
> would think hdc). Is it better to put the cdrw as single or primary and let the
> cdrom be the slave on my first ide?
> 2. Does this mean that i set up both the cdrom and the cdrw as scsi? I think I
> read that if you compile both scsi and atap/ide into the kernel the atapi/ide
> will take over which I don't want for the cdrw for sure.
> 3. If both are to be scsi, should my cdrw be scd0 and my cdrom scd1 or does this
> matter?
> 4. What symlinks do I do? Right now I have /dev/cdrom linked to scd0, but is
> this where the cdrw should be linked? Do I make an additional directory and
> mount point so that both can be mounte?
> Thanks.
> 
> 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup

Re: cdrom and cdrw

[Janina Sajka]

Yes, both are either IDE or scsi when you use kernel mods for ide-scsi 
emmulation. I do it all the time, by the way.

If on the other hand one device is on an IDE bus and the other on a SCSI 
bus, then you let each be what it is..

Either way, simply create a new mount point directory and symlink as you 
wish. That part is all up to you. I use /cdr and /cdrw just to keep things 
clear for myself.
 On Tue, 26 Mar 2002, Cheryl Homiak wrote:

> I'm a little confused even after reading all the docs so I could use some help
> here.
> I have an ide/atapi cdrom, which I have loaded as scsi because i'm getting ready
> to get a cdrw in addition to the cdrom. Here are my questions:
> 1. Does placement of the cdrw and cdrom matter. The person installing wants to
> put them on separate ides as he says this can make the cdrw slightly faster.
> this means that one of them has to be hdb and the other has to be hdc or hdd (I
> would think hdc). Is it better to put the cdrw as single or primary and let the
> cdrom be the slave on my first ide?
> 2. Does this mean that i set up both the cdrom and the cdrw as scsi? I think I
> read that if you compile both scsi and atap/ide into the kernel the atapi/ide
> will take over which I don't want for the cdrw for sure.
> 3. If both are to be scsi, should my cdrw be scd0 and my cdrom scd1 or does this
> matter?
> 4. What symlinks do I do? Right now I have /dev/cdrom linked to scd0, but is
> this where the cdrw should be linked? Do I make an additional directory and
> mount point so that both can be mounte?
> Thanks.
> 
> 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 

-- 
	
				Janina Sajka, Director
				Technology Research and Development
				Governmental Relations Group
				American Foundation for the Blind (AFB)

Email: janina@afb.net		Phone: (202) 408-8175

Chair, Accessibility SIG
Open Electronic Book Forum (OEBF)
http://www.openebook.org

Re: cdrom and cdrw

[Kerry Hoath]

I would assume you allready have ide hard disks.
If you have an ide drive on the primary master, and nothing on
the secondary ide channel except a cdrom I would jumper like this:
primary master hard disk. Most bioses will try booting primary master first
unless overridden so leave the hard drive there.
Secondary master, cdrw drive.
this will map to hdc as far as the ide driver is concerned and scd0 if
ide-scsi is active.
cdrom secondary slave.
this will show as hdd to the ide subsystem but scd1 if you have ide-scsi configured.
You probably want ide-scsi controlling both cdrom and cdrw since
cdparanoia and cdrdao work better with ide-scsi even with atapi cdroms.
You should therefore compile out ide/atapi cdrom support and in ide-scsi or compile both
as modules and put the right device aliases in conf.modules.
Better to just compile out ide/atapi support and in ide-scsi generally speaking.
Here is the output of /proc/scsi on a system with
both scsi and ide-scsi devices.
This system has a writer and a cdrom. The cdrom is controled
by ide-scsi but the writer is scsi. My other system only has
an ide writer in it controlled by ide-scsi.

Attached devices:
Host: scsi0 Channel: 00 Id: 00 Lun: 00
  Vendor: IBM      Model: DCAS-34330       Rev: S65A
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 01 Lun: 00
  Vendor: IBM      Model: DCAS-34330       Rev: S61A
  Type:   Direct-Access                    ANSI SCSI revision: 02
Host: scsi0 Channel: 00 Id: 03 Lun: 00
  Vendor: YAMAHA   Model: CRW8424S         Rev: 1.0g
  Type:   CD-ROM                           ANSI SCSI revision: 02
Host: scsi1 Channel: 00 Id: 00 Lun: 00
  Vendor: LG       Model: CD-ROM CRD-8482B Rev: 1.00
  Type:   CD-ROM                           ANSI SCSI revision: 02

Regarding simlinks, once you have your system configured with ide-scsi and/or
ide/atapi support and know where the devices will show up you create 2
links one called /dev/cdrom and the other /dev/cdrecorder.
Make sure you have 2 mountpoints and you can list both in /etc/fstab but
make sure to specify both noauto and ro so they won't automount at boot
and are mounted read-only something like this:
/dev/scd0 /cdwriter iso9660 ro,noauto 0 1
/dev/scd1 /cdrom iso9660 ro,noauto 0 1

Also make sure to set the environment variable CDR_DEVICE to the adapter/id/lun tripple
of your cdrecorder for example:
export CDR_DEVICE=0,0,0
that way cdrecord knows which device to use. You can also do it in cdrecord.conf
see manpages. There is also a cdrdao.conf where you
can set various options to tell cdrdao what driver to use,
what speed to burn at etc.
If using burn speeds faster than 16x and your chipset does not automatically enable
dma for the cdrecorder device you might want to do it on the
legacy block device with hdparm to prevent buffer underruns.
Even though my cdrw is ide-scsi, I do the following in startup scripts,
hdparm -d1 /dev/hdc
without this, the fifo undr cdrecord empties and smartburn
(It is a liteon drive) gets used to prevent coasters.
When I enable DMA for the cdrw the minimum fill rate for the fifo
is 90% and no use of smartburn required.
This is on a duron 750 with via udma/66 controllers, a 7200 rpm
quantum running dma and sustaining 15 megabytes per second transferr.
The i/o subsystem on this board is plenty fast enough for what is required
but the lack of dma causes grief for the relatively slow to respond
cdrw so I must enable it.

Regards, Kerry.
On Tue, Mar 26, 2002 at 10:52:16AM -0600, Cheryl Homiak wrote:
> I'm a little confused even after reading all the docs so I could use some help
> here.
> I have an ide/atapi cdrom, which I have loaded as scsi because i'm getting ready
> to get a cdrw in addition to the cdrom. Here are my questions:
> 1. Does placement of the cdrw and cdrom matter. The person installing wants to
> put them on separate ides as he says this can make the cdrw slightly faster.
> this means that one of them has to be hdb and the other has to be hdc or hdd (I
> would think hdc). Is it better to put the cdrw as single or primary and let the
> cdrom be the slave on my first ide?
> 2. Does this mean that i set up both the cdrom and the cdrw as scsi? I think I
> read that if you compile both scsi and atap/ide into the kernel the atapi/ide
> will take over which I don't want for the cdrw for sure.
> 3. If both are to be scsi, should my cdrw be scd0 and my cdrom scd1 or does this
> matter?
> 4. What symlinks do I do? Right now I have /dev/cdrom linked to scd0, but is
> this where the cdrw should be linked? Do I make an additional directory and
> mount point so that both can be mounte?
> Thanks.
> 
> 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 
> 

-- 
Kerry Hoath:  kerry@gotss.net kerry@gotss.eu.org or  kerry@gotss.spice.net.au
ICQ: 8226547 msn: kerry@gotss.net Yahoo: kerryhoath@yahoo.com.au

Re: cdrom and cdrw

[Kerry Hoath]

Wrong again greg,
failing to set the cdrom up as ide-scsi
will prevent utilities from using the read raw p-w subchannel command.
This foils index detection and can prevent some drives from reading cd-text 
informantion and isrc information.
Some drives do not support the read-raw p-w subchannel command and will only read
the pq subchannel but why take the risk?
Also, cdparanoia will work with some drives in ide-scsi emulation that will fail when
controlled by the ide/atapi driver.
Your milage may vary but I have found that the ide-scsi layer is more
affective at digital audio extraction than the ide/atapi driver.

Regards, Kerry.
On Tue, Mar 26, 2002 at 11:29:44AM -0600, Gregory Nowak wrote:
> You don't need to set up the cdrom as a ide-scsi device. This is only required for the cdrw.
> Greg
> 
> 
> On Tue, Mar 26, 2002 at 10:52:16AM -0600, Cheryl Homiak wrote:
> > I'm a little confused even after reading all the docs so I could use some help
> > here.
> > I have an ide/atapi cdrom, which I have loaded as scsi because i'm getting ready
> > to get a cdrw in addition to the cdrom. Here are my questions:
> > 1. Does placement of the cdrw and cdrom matter. The person installing wants to
> > put them on separate ides as he says this can make the cdrw slightly faster.
> > this means that one of them has to be hdb and the other has to be hdc or hdd (I
> > would think hdc). Is it better to put the cdrw as single or primary and let the
> > cdrom be the slave on my first ide?
> > 2. Does this mean that i set up both the cdrom and the cdrw as scsi? I think I
> > read that if you compile both scsi and atap/ide into the kernel the atapi/ide
> > will take over which I don't want for the cdrw for sure.
> > 3. If both are to be scsi, should my cdrw be scd0 and my cdrom scd1 or does this
> > matter?
> > 4. What symlinks do I do? Right now I have /dev/cdrom linked to scd0, but is
> > this where the cdrw should be linked? Do I make an additional directory and
> > mount point so that both can be mounte?
> > Thanks.
> > 
> > 
> > _______________________________________________
> > Speakup mailing list
> > Speakup@braille.uwo.ca
> > http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 

-- 
Kerry Hoath:  kerry@gotss.net kerry@gotss.eu.org or  kerry@gotss.spice.net.au
ICQ: 8226547 msn: kerry@gotss.net Yahoo: kerryhoath@yahoo.com.au

Re: cdrom and cdrw

[Gregory Nowak]

The only reason why I said that was because when I had a cdrom drive in this machine in addition to the cdrw drive, I had the cdrw as ide-scsi, and the cdrom as ide, and everything worked smoothly.
Greg


On Wed, Mar 27, 2002 at 01:40:13AM +0800, Kerry Hoath wrote:
> Wrong again greg,
> failing to set the cdrom up as ide-scsi
> will prevent utilities from using the read raw p-w subchannel command.
> This foils index detection and can prevent some drives from reading cd-text 
> informantion and isrc information.
> Some drives do not support the read-raw p-w subchannel command and will only read
> the pq subchannel but why take the risk?
> Also, cdparanoia will work with some drives in ide-scsi emulation that will fail when
> controlled by the ide/atapi driver.
> Your milage may vary but I have found that the ide-scsi layer is more
> affective at digital audio extraction than the ide/atapi driver.
> 
> Regards, Kerry.
> On Tue, Mar 26, 2002 at 11:29:44AM -0600, Gregory Nowak wrote:
> > You don't need to set up the cdrom as a ide-scsi device. This is only required for the cdrw.
> > Greg
> > 
> > 
> > On Tue, Mar 26, 2002 at 10:52:16AM -0600, Cheryl Homiak wrote:
> > > I'm a little confused even after reading all the docs so I could use some help
> > > here.
> > > I have an ide/atapi cdrom, which I have loaded as scsi because i'm getting ready
> > > to get a cdrw in addition to the cdrom. Here are my questions:
> > > 1. Does placement of the cdrw and cdrom matter. The person installing wants to
> > > put them on separate ides as he says this can make the cdrw slightly faster.
> > > this means that one of them has to be hdb and the other has to be hdc or hdd (I
> > > would think hdc). Is it better to put the cdrw as single or primary and let the
> > > cdrom be the slave on my first ide?
> > > 2. Does this mean that i set up both the cdrom and the cdrw as scsi? I think I
> > > read that if you compile both scsi and atap/ide into the kernel the atapi/ide
> > > will take over which I don't want for the cdrw for sure.
> > > 3. If both are to be scsi, should my cdrw be scd0 and my cdrom scd1 or does this
> > > matter?
> > > 4. What symlinks do I do? Right now I have /dev/cdrom linked to scd0, but is
> > > this where the cdrw should be linked? Do I make an additional directory and
> > > mount point so that both can be mounte?
> > > Thanks.
> > > 
> > > 
> > > _______________________________________________
> > > Speakup mailing list
> > > Speakup@braille.uwo.ca
> > > http://speech.braille.uwo.ca/mailman/listinfo/speakup
> > 
> > _______________________________________________
> > Speakup mailing list
> > Speakup@braille.uwo.ca
> > http://speech.braille.uwo.ca/mailman/listinfo/speakup
> > 
> 
> -- 
> Kerry Hoath:  kerry@gotss.net kerry@gotss.eu.org or  kerry@gotss.spice.net.au
> ICQ: 8226547 msn: kerry@gotss.net Yahoo: kerryhoath@yahoo.com.au
> 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup

Re: cdrom and cdrw

[Igor Gueths]

Hi Cheryl. Is the cdrw drive a scsi drive? Because if it is an atapi/ide drive, here's my set up. My hd and floppy drive are on one ide controller, and the Cdrom and Cdrw are on another controller. The cdrw is slaved to the Cdrom I believe. I haven't checked the wiring, so this could be wrong. But if you were to set it up that way, I suppose it would probably work. Also, is your cdrom a scsi drive? 
----- Original Message ----- 
From: Cheryl Homiak <chomiak@chartermi.net>
To: speakup <speakup@braille.uwo.ca>
Sent: Tuesday, March 26, 2002 11:52 AM
Subject: cdrom and cdrw


> I'm a little confused even after reading all the docs so I could use some help
> here.
> I have an ide/atapi cdrom, which I have loaded as scsi because i'm getting ready
> to get a cdrw in addition to the cdrom. Here are my questions:
> 1. Does placement of the cdrw and cdrom matter. The person installing wants to
> put them on separate ides as he says this can make the cdrw slightly faster.
> this means that one of them has to be hdb and the other has to be hdc or hdd (I
> would think hdc). Is it better to put the cdrw as single or primary and let the
> cdrom be the slave on my first ide?
> 2. Does this mean that i set up both the cdrom and the cdrw as scsi? I think I
> read that if you compile both scsi and atap/ide into the kernel the atapi/ide
> will take over which I don't want for the cdrw for sure.
> 3. If both are to be scsi, should my cdrw be scd0 and my cdrom scd1 or does this
> matter?
> 4. What symlinks do I do? Right now I have /dev/cdrom linked to scd0, but is
> this where the cdrw should be linked? Do I make an additional directory and
> mount point so that both can be mounte?
> Thanks.
> 
> 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup


_________________________________________________________
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Re: cdrom and cdrw

[Gregory Nowak]

Now, how can you have a floppy and hard drive on the same controller?
Greg


On Tue, Mar 26, 2002 at 02:35:16PM -0500, Igor Gueths wrote:
> Hi Cheryl. Is the cdrw drive a scsi drive? Because if it is an atapi/ide drive, here's my set up. My hd and floppy drive are on one ide controller, and the Cdrom and Cdrw are on another controller. The cdrw is slaved to the Cdrom I believe. I haven't checked the wiring, so this could be wrong. But if you were to set it up that way, I suppose it would probably work. Also, is your cdrom a scsi drive? 
> ----- Original Message ----- 
> From: Cheryl Homiak <chomiak@chartermi.net>
> To: speakup <speakup@braille.uwo.ca>
> Sent: Tuesday, March 26, 2002 11:52 AM
> Subject: cdrom and cdrw
> 
> 
> > I'm a little confused even after reading all the docs so I could use some help
> > here.
> > I have an ide/atapi cdrom, which I have loaded as scsi because i'm getting ready
> > to get a cdrw in addition to the cdrom. Here are my questions:
> > 1. Does placement of the cdrw and cdrom matter. The person installing wants to
> > put them on separate ides as he says this can make the cdrw slightly faster.
> > this means that one of them has to be hdb and the other has to be hdc or hdd (I
> > would think hdc). Is it better to put the cdrw as single or primary and let the
> > cdrom be the slave on my first ide?
> > 2. Does this mean that i set up both the cdrom and the cdrw as scsi? I think I
> > read that if you compile both scsi and atap/ide into the kernel the atapi/ide
> > will take over which I don't want for the cdrw for sure.
> > 3. If both are to be scsi, should my cdrw be scd0 and my cdrom scd1 or does this
> > matter?
> > 4. What symlinks do I do? Right now I have /dev/cdrom linked to scd0, but is
> > this where the cdrw should be linked? Do I make an additional directory and
> > mount point so that both can be mounte?
> > Thanks.
> > 
> > 
> > _______________________________________________
> > Speakup mailing list
> > Speakup@braille.uwo.ca
> > http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 
> 
> _________________________________________________________
> Do You Yahoo!?
> Get your free @yahoo.com address at http://mail.yahoo.com
> 
> 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup

Re: cdrom and cdrw

[Igor Gueths]

Hi Greg. The floppy drive is slaved to the hard disk and the hd is primary master, the floppy is primary slave. 
----- Original Message ----- 
From: Gregory Nowak <gnowak1@uic.edu>
To: <speakup@braille.uwo.ca>
Sent: Tuesday, March 26, 2002 5:16 PM
Subject: Re: cdrom and cdrw


> Now, how can you have a floppy and hard drive on the same controller?
> Greg
> 
> 
> On Tue, Mar 26, 2002 at 02:35:16PM -0500, Igor Gueths wrote:
> > Hi Cheryl. Is the cdrw drive a scsi drive? Because if it is an atapi/ide drive, here's my set up. My hd and floppy drive are on one ide controller, and the Cdrom and Cdrw are on another controller. The cdrw is slaved to the Cdrom I believe. I haven't checked the wiring, so this could be wrong. But if you were to set it up that way, I suppose it would probably work. Also, is your cdrom a scsi drive? 
> > ----- Original Message ----- 
> > From: Cheryl Homiak <chomiak@chartermi.net>
> > To: speakup <speakup@braille.uwo.ca>
> > Sent: Tuesday, March 26, 2002 11:52 AM
> > Subject: cdrom and cdrw
> > 
> > 
> > > I'm a little confused even after reading all the docs so I could use some help
> > > here.
> > > I have an ide/atapi cdrom, which I have loaded as scsi because i'm getting ready
> > > to get a cdrw in addition to the cdrom. Here are my questions:
> > > 1. Does placement of the cdrw and cdrom matter. The person installing wants to
> > > put them on separate ides as he says this can make the cdrw slightly faster.
> > > this means that one of them has to be hdb and the other has to be hdc or hdd (I
> > > would think hdc). Is it better to put the cdrw as single or primary and let the
> > > cdrom be the slave on my first ide?
> > > 2. Does this mean that i set up both the cdrom and the cdrw as scsi? I think I
> > > read that if you compile both scsi and atap/ide into the kernel the atapi/ide
> > > will take over which I don't want for the cdrw for sure.
> > > 3. If both are to be scsi, should my cdrw be scd0 and my cdrom scd1 or does this
> > > matter?
> > > 4. What symlinks do I do? Right now I have /dev/cdrom linked to scd0, but is
> > > this where the cdrw should be linked? Do I make an additional directory and
> > > mount point so that both can be mounte?
> > > Thanks.
> > > 
> > > 
> > > _______________________________________________
> > > Speakup mailing list
> > > Speakup@braille.uwo.ca
> > > http://speech.braille.uwo.ca/mailman/listinfo/speakup
> > 
> > 
> > _________________________________________________________
> > Do You Yahoo!?
> > Get your free @yahoo.com address at http://mail.yahoo.com
> > 
> > 
> > _______________________________________________
> > Speakup mailing list
> > Speakup@braille.uwo.ca
> > http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup


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Re: cdrom and cdrw

[Kerry Hoath]

It's an atapi floppy drive, an ls-120 or similar
it reads floppies of standard capacity and super floppies.
when I say floppies of standard capacity you can't read a 1.72m
floppy in a superfloppy drive.
On Tue, Mar 26, 2002 at 04:16:33PM -0600, Gregory Nowak wrote:
> Now, how can you have a floppy and hard drive on the same controller?
> Greg
> 

-- 
Kerry Hoath:  kerry@gotss.net kerry@gotss.eu.org or  kerry@gotss.spice.net.au
ICQ: 8226547 msn: kerry@gotss.net Yahoo: kerryhoath@yahoo.com.au

Re: cdrom and cdrw

[Gregory Nowak]

That sounds like a more normal setup (grin).
Greg


On Tue, Mar 26, 2002 at 05:28:32PM -0500, Igor Gueths wrote:
> Hi Greg. The floppy drive is slaved to the hard disk and the hd is primary master, the floppy is primary slave. 
> ----- Original Message ----- 
> From: Gregory Nowak <gnowak1@uic.edu>
> To: <speakup@braille.uwo.ca>
> Sent: Tuesday, March 26, 2002 5:16 PM
> Subject: Re: cdrom and cdrw
> 
> 
> > Now, how can you have a floppy and hard drive on the same controller?
> > Greg
> > 
> > 
> > On Tue, Mar 26, 2002 at 02:35:16PM -0500, Igor Gueths wrote:
> > > Hi Cheryl. Is the cdrw drive a scsi drive? Because if it is an atapi/ide drive, here's my set up. My hd and floppy drive are on one ide controller, and the Cdrom and Cdrw are on another controller. The cdrw is slaved to the Cdrom I believe. I haven't checked the wiring, so this could be wrong. But if you were to set it up that way, I suppose it would probably work. Also, is your cdrom a scsi drive? 
> > > ----- Original Message ----- 
> > > From: Cheryl Homiak <chomiak@chartermi.net>
> > > To: speakup <speakup@braille.uwo.ca>
> > > Sent: Tuesday, March 26, 2002 11:52 AM
> > > Subject: cdrom and cdrw
> > > 
> > > 
> > > > I'm a little confused even after reading all the docs so I could use some help
> > > > here.
> > > > I have an ide/atapi cdrom, which I have loaded as scsi because i'm getting ready
> > > > to get a cdrw in addition to the cdrom. Here are my questions:
> > > > 1. Does placement of the cdrw and cdrom matter. The person installing wants to
> > > > put them on separate ides as he says this can make the cdrw slightly faster.
> > > > this means that one of them has to be hdb and the other has to be hdc or hdd (I
> > > > would think hdc). Is it better to put the cdrw as single or primary and let the
> > > > cdrom be the slave on my first ide?
> > > > 2. Does this mean that i set up both the cdrom and the cdrw as scsi? I think I
> > > > read that if you compile both scsi and atap/ide into the kernel the atapi/ide
> > > > will take over which I don't want for the cdrw for sure.
> > > > 3. If both are to be scsi, should my cdrw be scd0 and my cdrom scd1 or does this
> > > > matter?
> > > > 4. What symlinks do I do? Right now I have /dev/cdrom linked to scd0, but is
> > > > this where the cdrw should be linked? Do I make an additional directory and
> > > > mount point so that both can be mounte?
> > > > Thanks.
> > > > 
> > > > 
> > > > _______________________________________________
> > > > Speakup mailing list
> > > > Speakup@braille.uwo.ca
> > > > http://speech.braille.uwo.ca/mailman/listinfo/speakup
> > > 
> > > 
> > > _________________________________________________________
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> > > Get your free @yahoo.com address at http://mail.yahoo.com
> > > 
> > > 
> > > _______________________________________________
> > > Speakup mailing list
> > > Speakup@braille.uwo.ca
> > > http://speech.braille.uwo.ca/mailman/listinfo/speakup
> > 
> > _______________________________________________
> > Speakup mailing list
> > Speakup@braille.uwo.ca
> > http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 
> 
> _________________________________________________________
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> Get your free @yahoo.com address at http://mail.yahoo.com
> 
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Re: cdrom and cdrw

[Gregory Nowak]

That clarifies it. I didn't know they were referred to as "floppy drives" for short, when I think of thoes 2 words, the other kind comes to mind.
Greg


On Wed, Mar 27, 2002 at 10:07:17AM +0800, Kerry Hoath wrote:
> It's an atapi floppy drive, an ls-120 or similar
> it reads floppies of standard capacity and super floppies.
> when I say floppies of standard capacity you can't read a 1.72m
> floppy in a superfloppy drive.
> On Tue, Mar 26, 2002 at 04:16:33PM -0600, Gregory Nowak wrote:
> > Now, how can you have a floppy and hard drive on the same controller?
> > Greg
> > 
> 
> -- 
> Kerry Hoath:  kerry@gotss.net kerry@gotss.eu.org or  kerry@gotss.spice.net.au
> ICQ: 8226547 msn: kerry@gotss.net Yahoo: kerryhoath@yahoo.com.au
> 
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Re: cdrom and cdrw

[Cheryl Homiak]

Hi Kerry and all!
Outstanding post, Kerry; thanks.
the person installing still wants to put the cdrw and cdrom on different cables,
but I'm concerned about this. If he puts the cdrw as the primary on the second
cable, and the cdrom as the slave on the first, that would make the cdrom scd0
and the cdrw scd1. Dooes the cdrw need to be scd0 and should it be a
primary/master?
Thanks.

Re: cdrom and cdrw

[Kerry Hoath]

It makes no difference which way they go on except
copying from cdrom to hard drive may be less efficient
if they are both on one controller. I would put cdrom
and cdrw on secondary controler because if you are copying
cds you will use a temp file on hard drive and _not_
do an on the fly copy unless it is a data only cd. Even then the runout
blocks can cause trouble.
I would put cdrw as secondary master and cdrom as
secondary slave.
That way digital extraction from either cdrom or cdrw to hard disk will run at full speed.
Note that if a cd is hard to read and you are doing an on the fly copy without
using a temp file and the source disk spins down you get a frisby so use
temp files on hard disk to do cd copies.

Regards, Kerry.
On Wed, Mar 27, 2002 at 08:57:08AM -0600, Cheryl Homiak wrote:
> Hi Kerry and all!
> Outstanding post, Kerry; thanks.
> the person installing still wants to put the cdrw and cdrom on different cables,
> but I'm concerned about this. If he puts the cdrw as the primary on the second
> cable, and the cdrom as the slave on the first, that would make the cdrom scd0
> and the cdrw scd1. Dooes the cdrw need to be scd0 and should it be a
> primary/master?
> Thanks.
> 
> 
> _______________________________________________
> Speakup mailing list
> Speakup@braille.uwo.ca
> http://speech.braille.uwo.ca/mailman/listinfo/speakup
> 

-- 
Kerry Hoath:  kerry@gotss.net kerry@gotss.eu.org or  kerry@gotss.spice.net.au
ICQ: 8226547 msn: kerry@gotss.net Yahoo: kerryhoath@yahoo.com.au