How can I use a USB DVD Drive without having to mount it?

mitu

If you want to use a DVD/Disc without mounting it, then you'll have to implement your own access routine, by opening the disc device directly (/dev/sr0) and reading from it.
But this is kind of off-topic, you can probably look at existing DVD reading projects (like libdvdcss).

RetroFloppy08

What is libdvdcss?

And how can i install it?

Clyde

@RetroFloppy08 said in How can I use a USB DVD Drive without having to mount it?:

What is libdvdcss?

https://en.wikipedia.org/wiki/Libdvdcss

And how can i install it?

On any Debian-based Linux like Retropie with this command:

sudo apt install libdvdcss2

That said, care to elaborate a bit further what kind of DVD-ROM support you want to have in your console? (playing videos, loading games etc.)

RetroFloppy08

Does it require an internet connection?

Clyde

It needs one for updates and installing new software (like libdvdcss2).

RetroFloppy08

@Clyde Thanks 4 the pro tip.

RetroFloppy08

Also, i use the dvd-roms for playing games.

RetroFloppy08

Any clue how to load games from a dvd rom?

Clyde

Please give us the information about your system that is asked for in https://retropie.org.uk/forum/topic/3/read-this-first.

In addition to that, I asked you before what kind of DVD-ROM support you want to have in your console, but you didn't say anything about that.

RetroFloppy08

1st - I would like to load games from the dvds,

2nd, (faints because I can't understand what i'm actually using)

mitu

@RetroFloppy08 said in How can I use a USB DVD Drive without having to mount it?:

1st - I would like to load games from the dvds,

Which games ? What emulator are you talking about ?

wild snail

Is it possible to write save-files and save-states when playing from DVD ?

Clyde

@wild-snail You really should answer our former questions before asking new ones.

RetroFloppy08

@mitu Practically all of them.

mitu

With such general question, it's difficult to give an useful answer. Some emulators have support for real CD-ROM support (RetroArch - for some systems). You may want to look at each emulator that you're interested and find out if it supports playing games from DVD/CD.

RetroFloppy08

@mitu I have decided what emulators I want to use.

-SNES

-N64

-Sega Genesis/CD/32X

-PSP

-And Gamecube (if it exists)

mitu

I though you were talking about using the CD game media to play the games. The answer to your question is no, it's not possible to use the DVD media for ROM storage without mounting it, so that emulators can read and play the games.

RetroFloppy08

@mitu Is there a SIMPLE way to mount the disc drive?

mitu

@RetroFloppy08 Yes, using the mount command.

Clyde

@RetroFloppy08 See https://www.raspberrypi.org/documentation/configuration/external-storage.md (edit:) and https://wiki.debian.org/CDDVD.