Add info on game discs

[mborgerson]

What's supported, what isn't, and how to create a compatible game disc using extract-xiso.

[LittleStinky123]

Please add this disclaimer.
Especially mention that backups made with kreon drives don't work at the moment.
I wasted so much time figuring out why the booted vm said to "Please insert Xbox disc..." while the md5 of my copy of Conker Live & Reloaded matched so I didn't think of the possibility that the backup had to be extracted and rebuilt.

[JayFoxRox]

I wasted so much time [...]

Sorry about that.

Please add this disclaimer.

XQEMU is an open-source project: If someone sends a PR and it will be reviewed / integrated.

We are aware of many issues, and usually update our issue-tracker as soon as possible.

However, we don't regularly update our website. We can't handle this differently, as XQEMU has very few active developers and most of our free time goes into actual emulation and new features.

We don't have a dedicated webmaster so we depend on contributions from other people; like you.

Especially mention that backups made with kreon drives don't work at the moment.

We generally recommend people to use redump-quality dumps, but inform them to repack them using extract-xiso due to a lack of disc protection emulation (which also requires a modified kernel).

why the booted vm said to "Please insert Xbox disc..."

This is part of the dummy dashboard. I've created an issue at xqemu/xqemu-hdd-image#1

There's currently work on an legal open-source dashboard which might solve this in the future; for now improving our image is probably the best idea.