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Prevent CD and DVD disks from becoming stuck
OK - this has hint has really saved from a major PITA :-) I've got one of the original iMac (Flat Panel) "Tessera, P80" at 800MHz from 2002. Last year, the DVD drive went titsup and had to be replaced. I got the following:
and so far when it went to sleep with a CD or DVD in the drive, I was unable to eject the tray short of rebooting the whole computer and holding down the eject button at startup. This hint works perfectly in resolving this issue. I have, however, the following comments: Normally, when the tray has been ejected, it's automagically pulled retracted again after the infamous 10 minutes. When this hint is implemented, this is no longer the case: once ejected it stays ejected, and has to be manually closed again. As to launchd and where it's loading stuff from, man launchctl provides the following information:
We'll keep our dirty hands way off the last two. But the first three are interesting. Provided where you place the file, launchd treats it a somewhat differently: ~/Library/LaunchAgents /Library/LaunchAgents
Of these users, only bjarne and maria had active sessions, while tina had been logged out. The plist had been created and loaded into launchd with only bjarne logged in. As you can see, bjarne doesn't get the process while both tina and maria get it. And furthermore, even though tina has subsequently logged out, she's still got the process running. You can also see that even after having unloaded the plist, the maria launchd still re-starts the process. /Library/LaunchDaemons As to the load/unload issue with active/inactive account there might be a plist parameter that fixes this, but I don't know enough about launchd to be able to provide a solution.
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