how to make cdrom drive auto remount or make it work without having to mount it

edmaul69

so i am on a raspberry pi 3 with retropie 4.1.12. so in the basilisk the mac emulator i can insert and eject disks witout any issues. the only way i could get the commandline or dosbox to recognize a disk was to mount the drive. however, as soon as you eject the disk the drive unmounts and you have to remount it again. even if i ssh into the pi and mount it, dosbox wont recognize the disk. so i cant install multi disk games this way. so i am curious if there was a way to make it auto remount maybe putting something in /etc/fstab or something? or a better method? the commands i did:

mkdir /media/cdrom

then:

mount -t iso9660 /dev/sr0 /media/cdrom

backstander

@edmaul69
This has spark my interest! Most users just have the ISOs of all the discs needed and use IMGMOUNT to mount all the ISOs at launch and just use Ctrl+F4 to toggle through the virtual discs. Like this:

imgmount d image1.cue image2.cue image3.cue -t cdrom

Are you talking about an actually physical disc drive that you are swapping out the actual CD-ROMs in? Then you do something like this:

mount d /mnt/cdrom -t cdrom -usecd 0

"-usecd # use sdl lowlevel cdrom routines to support more lowlevel stuff."
http://www.vogons.org/viewtopic.php?t=3563

More information here:
http://www.sierrahelp.com/Utilities/Emulators/DOSBox/DOSBoxGuide-Mount.html

Not sure if that works but that's what I found on The Internets.

edmaul69

@backstander well you helped me with something possibly. Using a bin and cue. I have it running from the disk. My issue is that i got it to mount on boot by modifying fstab. But i cannot get it to automount the drive after you eject and put a new disk in. I have also tried to chown -R pi:pi /media/cdrom0 plus /dev/sr0 and /dev/cdrom so i can eject without permissions but on reboot the files revert back to root. I wonder if their is a way to put in autostart to chown /media/cdrom0 or 0777 permissions?

backstander

@edmaul69

I wonder if their is a way to put in autostart to chown /media/cdrom0 or 0777 permissions?

You probably want to use 0555 since you can't actually write to the CD but yeah I have done this a long long time ago when I used Red Hat linux but I can't remember exactly what I did.

I think in your fstab you need to add something like user

update
maybe post your fstab file.

edmaul69

@backstander so playing a cd works fine in dosbox. To solve my mounting issue i just made a .sh file that i put with my dos .sh files with this in it:

sudo mount -t iso9660 /dev/sr0 /media/cdrom

Then i make the directory in /media/ called cdrom. So now i can mount it while i am in emulationstation. So i am satisfied. This is actually a better way. Because unless you set permissions or change ownership to /media/cdrom/ after every boot then you cant eject and reload new discs in basilisk. You dont need to mount the disc for it to work in the mac os. But you do for both linux and dosbox. Also @backstander if you didnt before get windows for workgroups 3.11 instead of just windows 3.1. Also do custom install so you get all your apps and control panel and stuff. Not sure why control panel isnt on by default. Kind of useless without it.

edmaul69

@backstander also, i forgot to say thanks for the good info and help. So thank you.

edmaul69

@backstander so here is the .sh i made for the 7th guest. first i tell linux to mount the cd. then you have to tell dosbox to mount the d:\ drive before the c:\ drive. and because this game looks for the soundblaster drivers you need to mount your c:\ drive and then "cd" change the directory to where your executable is and then the executable.

sudo mount -t iso9660 /dev/sr0 /media/cdrom
#!/bin/bash 
/opt/retropie/emulators/dosbox/bin/dosbox -c "mount d /media/cdrom -t cdrom" -c "mount c /home/pi/RetroPie/roms/pc/cdrive" -c "C:" -c "cd/ID/T7G" -c "T7G.BAT"

backstander

@edmaul69
Nice! Great choice of game! I also own the original version of The 7th Guest on a CD-ROM! I have actually never beat that game because I couldn't get the very last puzzle. I've heard that the iPad version has a much easier last puzzle and a few other bug fixes and tweaks.

edmaul69

@backstander yeah it has 3 less puzzles. I beat it on dos several times but i didnt play through as many times as i did the 11th hour. Excellent sequel imo.