Fix for "LG" optical drives

[Robert_L]

Several people (including me) found out that recent "LG" DVD drives, while being able to read CD/DVD media and to write CD media, will fail when trying to write DVD media under OSX. It turns out that those LG drives do not fully conform to the "MultiMedia Command" (MMC) specification. Anyone who faces the same trouble might try out the attached fix. Feedback is welcome. Please note that currently only SATA or PATA/IDE drives are supported (no USB, no FireWire).

LGmmcAtapiFix.zip

[MacSer]

Didn't help (((((

[schell]

Thank you, Robert!

This was the solution for my LG GH22NP20 DVD writer, now it works as advertised in my PowerMac G5 (Mac OS X 10.4.11). PatchBurn did not help, at least not alone. Maybe both your patch/fix and PatchBurn are necessary; I didn't uninstall PatchBurn...

 

Thanks again and all the best,

--Hans

[Cycle Tron]

System = Dual g4 1.25, OS X 10.5 (latest updates), burner = LG GH22NP20, burner software, both Toast 9 & 10 Professional.

 

I can burn CDs with no problems, but not DVDs.

 

Installed the above patch, but no difference. PatchBurn won't install on a OS X 10.5 system.

 

Anyone got any thoughts?

 

Sincerely,

Scott

[verdant]

Have you tried Dragon Burn.....?

[delatorre]

Thank you Robert.

 

Working for me on Mac Pro with OS X 10.4.11. As with a user above, I'd also used PatchBurn before installing your kext.

[Fuggy]

THX Robert!

 

This works fine with my LG GH22NS50 !

[rolink]

Hey, a new bee just here.

I'm trying to install the .ketx with terminal in a Power Mac G4 933 running osx 10.4 just to give a try to a Lg gh22np21.

The problem is that I have not enough skills to make this in the Terminal.

Instructions copy from the .txt from the zip that Robert_L linked :

Installation:

- "sudo su"

"cp LGmmcAtapiFix.kext /System/Library/Extensions"

"chown -R root:wheel /System/Library/Extensions/LGmmcAtapiFix.kext"

"chmod -R 755 /System/Library/Extensions/LGmmcAtapiFix.kext"

- Reboot

(or use kext installer tool)

 

I don't know where to put the .kext on the computer to have it copy with terminal.

Please help, and sorry for boder you!

[Gringo Vermelho]

You can copy it to anywhere you like. But you have to CD to that directory before you can follow the instructions.

http://en.wikipedia....d_%28command%29

Just like you can't drag a file out of a folder without opening the folder first. It's the same thing on the command line. You have to "be in the folder" before you can work with its contents.

 

Extract it to your desktop for example.

Run Terminal and enter cd ~/desktop to navigate to your desktop. See?

Enter ls to verify that you are in the right place. (ls is the same as dir in DOS and the Windows command line)

 

Congratulations, you have learned two Terminal commands. Don't be afraid of the Terminal.

 

Be careful though:

.ketx

it's .kext (short for KErnel EXTension).

 

Now continue as directed.

[rolink]

Hey, still here!

Thank you Gringo Vermelho for your quick answer, it was helpfull. And not, I'm not afraid from Terminal but I have non too much idea of how it works.

 

I managed to put the commands in Terminal (erasing some extra spaces before some/) and what you can see bellow is a summary, but the thing is that Toast still doesn't record dvd's, as well I recorded a dvd single layer with a recordable folder from the OSx as a PC & Mac, but for having a VIDEO_TS folder working on a dvd standard player it's not enough.

 

It was like this:

cd ~/desktop
  ~/desktop sudo su
  desktop root# LS 
  LGmmcAtapiFix.kext
  /desktop root# cp LGmmcAtapiFix.kext/System/Library/Extensions
  usage: cp [-R [-H | -L | -P]] [-f | -i | -n] [-pv] src target
	  cp [-R [-H | -L | -P]] [-f | -i | -n] [-pv] src1 ... srcN directory
  /desktop root# chown -R root:wheel/System/Library/Extensions/LGmmcAtapiFix.kext
  usage: chown [-fhv] [-R [-H | -L | -P]] owner[:group] file ...
	  chown [-fhv] [-R [-H | -L | -P]] :group file ...
  /desktop root# chmod -R 755/System/Library/Extensions/LGmmcAtapiFix.kext
  usage: chmod [-fv] [-R [-H | -L | -P]] [-a | +a | =a  [i][# [ n]]] mode|entry file ...
  /desktop root# reboot

 

After this I asume that changes had been well made.

 

Some help will be great at this point. Thank you!

[pjvdm]

I have an identical problem, but are using a HP DVD Writer 1070d, can anyone adapt the kext for HP?

 

Thanx

[Gringo Vermelho]

After this I asume that changes had been well made.

 

No, none of your commands have been entered. Note how it politely shows you usage instructions after entering each command, that's because you're doing it wrong.

 

I managed to put the commands in Terminal (erasing some extra spaces before some/)

 

There's where it went wrong. There should be a space between the filename and the path.

 

cp [filename] [space] [path]