Create DVD device 

ln -s /dev/hdd /dev/dvd

my dvd device is listed as /dev/Hdc 

http://www.linuxquestions.org/questions/history/177178

> my dvd device is listed as /dev/Hdc

You DVD is listed as /dev/hdc because it is the secondary master device on your IDE chain.

It sounds like the only problem you have is mapping in your software package, Xine in your case. I use mplayer to view my vids and dvd's etc. In mplayer there in the settings is where you can change what device you want the the software to look at for the media. I'm sure it would be somewhere in the settings in Xine however I don't use it sorry.

my dvd device is listed as /dev/Hdc 

> ok
>
> but i do not see a /dev/dvd on the computer. It doesnt exist. Must this
> entry exist in order to play dvd movies.

If /dev/dvd did exist, it would just be a link to your actual device (/etc/hdc).

If you really want to use /dev/dvd you could create a link yourself by doing this as root…

ln -s /dev/hdc /dev/dvd

That will let you hit /dev/dvd, which will jump straight to /dev/hdc.

my dvd device is listed as /dev/Hdc 

> i am more concerned about /dev/dvd, is this file necessary to play dvd in
> linux?  and why isnt it on my installation?

All /dev/dvd is, is a softlink to /dev/hdx (x being whatever your IDE is setup). If you know your DVD is /dev/hdc just do what I mentioned above….

ln -s /dev/hdc /dev/dvd

this will create the link for you.

Make DVD a SCSI device 

Goal 

My dvd is only shown as /dev/hdd in my system, not a SCSI device.

$ grep -1i dvd /var/log/messages.1
--
Jun  7 15:23:28 kernel: hdd: attached ide-cdrom driver.
Jun  7 15:23:28 kernel: hdd: ATAPI 48X DVD-ROM drive, 192kB Cache, UDMA(33)
Jun  7 15:23:28 kernel: Uniform CD-ROM driver Revision: 3.12

$ cdrecord -scanbus
Cdrecord 2.0 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jorg Schilling
Linux sg driver version: 3.1.24
Using libscg version 'schily-0.7'
scsibus0:
        0,0,0     0) 'SONY    ' 'CD-RW  CRX195E1 ' 'ZYS5' Removable CD-ROM
        0,1,0     1) *
        0,2,0     2) *
        0,3,0     3) *
        0,4,0     4) *
        0,5,0     5) *
        0,6,0     6) *
        0,7,0     7) *

I want to make it a SCSI device.

Solution 

Add 'hdd=ide-scsi' to the kenel parameter:

$ diff -wu grub.conf~ grub.conf
@@ -32,7 +32,7 @@

 title RedHatLive 9 on rh8
        root (hd0,2)
-        kernel /boot/vmlinuz-2.4.20-24.9 ro root=/dev/hda3 hdc=ide-scsi
+        kernel /boot/vmlinuz-2.4.20-24.9 ro root=/dev/hda3 hdc=ide-scsi hdd=ide-scsi
         initrd /boot/initrd-2.4.20-24.9.img

 title RedHatLive 9 on os1
Tip !!

Now:

$ grep -2i dvd /var/log/messages

Jun  9 15:50 kernel: blk: queue c03c5a64, I/O limit 4095Mb (mask 0xffffffff)
Jun  9 15:50 kernel: hdc: SONY CD-RW CRX195E1, ATAPI CD/DVD-ROM drive
Jun  9 15:50 kernel: hdd: Toshiba DVD-ROM DSM-1712, ATAPI CD/DVD-ROM drive
Jun  9 15:50 kernel: ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
 [...]

--
Jun  9 15:50 kernel: scsi0 : SCSI host adapter emulation for IDE ATAPI devices
Jun  9 15:50 kernel:   Vendor: SONY      Model: CD-RW  CRX195E1   Rev: ZYS5
Jun  9 15:50 kernel:   Type:   CD-ROM                             ANSI SCSI rev2
Jun  9 15:50 kernel:   Vendor: Toshiba   Model: DVD-ROM SD-M1712  Rev: 1808
Jun  9 15:50 kernel:   Type:   CD-ROM                             ANSI SCSI rev2
Jun  9 15:50 kernel: ip_tables: (C) 2000-2002 Netfilter core team

$ cdrecord -scanbus
Cdrecord 2.0 (i686-pc-linux-gnu) Copyright (C) 1995-2002 Jorg Schilling
Linux sg driver version: 3.1.24
Using libscg version 'schily-0.7'
scsibus0:
        0,0,0     0) 'SONY    ' 'CD-RW  CRX195E1 ' 'ZYS5' Removable CD-ROM
        0,1,0     1) 'Toshiba ' 'DVD-ROM SD-M1712' '1808' Removable CD-ROM
        0,2,0     2) *
        0,3,0     3) *
        0,4,0     4) *
        0,5,0     5) *
        0,6,0     6) *
        0,7,0     7) *

Mount DVD While Preserve Upper Case File Names 

http://www.linuxquestions.org/questions/showthread.php?t=391530

To maintain maximum compatibility, I write my DVD file names as FILE1, FILE2, etc (ie, all in upper cases). But after burning, when I mount it back I get file1, file2, etc (ie, all in lower cases). Is there any way that I can prevent this, ie, have my upper case file names preserved?

Mount DVD While Preserve Upper Case File Names 

Specify UDF as the file system when mounting instead of ISO9660 and you'll get all uppercase file names.

madluther