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I have a second hard drive in my macbook pro that is bootable into my older os install after installing a new SSD with a clean build of OSX Mavericks. When booted into my SSD, I want my old drive to be only used storage space, however it keeps using it for other things. For example when I press open with, it shows me all my apps from the old drive. I already disabled Spotlight for the old drive, but how can I prevent all function except as an external drive?

PS. I still need to boot into it occasionally and I cant just eject it when using my SSD because I need to access files on it.

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    You can try unregistering dirs from Launch Services. /System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -u /path/to/dir – Mateusz Szlosek Sep 4 '14 at 18:51
  • Not clear to me:( so you want it to be connected but not functional at all, or partially functional or sometimes functional, or ? – Ruskes Sep 4 '14 at 18:51
  • I agree with Buscar웃, please clarify what you are wanting. I was starting to write an answer about using fstab to prevent drives from being auto mounted or set to read only. Also, is this internal drive really behaving differently from how an external drive would work? – Lee Joramo Sep 4 '14 at 19:54
  • @Buscar웃 I just want it to work as storage and for the OS not to use it for anything unless I explicitly read or write files on it. – stas Sep 4 '14 at 20:09
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I have a similar configuration. Two physical drives: one Mavericks, the other Mountain Lion as failsafe. When Yosemite comes out, I can leap Mountain Lion ahead.

In your primary OSX, exclude the /oldpartitionname/ (or, /oldpartitionname/Applications) from Spotlight.

Then reset "Open With" menu with Terminal:

/System/Library/Frameworks/CoreServices.framework/Frameworks/LaunchServices.framework/Support/lsregister -kill -r -domain local -domain system -domain user

Your OSX will rebuild a new list of apps, within the newly defined scope.

  • I wrote in the question that I already did that – stas Sep 12 '14 at 21:32
  • You didn't say that you did actually reset LaunchService. – fartheraway Sep 13 '14 at 0:29

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