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 Post subject: DASPI kernel extension
PostPosted: Sat Feb 05, 2011 7:54 am 
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Joined: Wed Nov 26, 2008 2:26 am
Posts: 3324
Starting from version 1.6.4 MakeMKV installation includes a lightweight open-source DASPI kernel extension. Installing this driver would allow MakeMKV to access optical drive directly, eliminating all problems related to "OS access" mode. DASPI driver is required only for a very small fraction of blu-ray drives. There is no need to install this driver unless explicitly requested by MakeMKV. On the other hand, DASPI driver is transparent - installing DASPI driver won't change any system behavior. The fall-back "OS access" mode will still work if DASPI is unavailable and blu-ray drive can't be accessed directly, but all problems described at http://www.makemkv.com/osxbd would still show up if DASPI is not installed.

UPDATE: Starting with OS X 10.10 "Yosemite" all kernel mode extensions (drivers) must be approved by Apple, one way or another (signed with an Apple-rooted certificate or white-listed by OS). For now, the only way to install DASPI driver on OS X 10.10 "Yosemite" is by disabling the driver signature checks for ALL drivers in the system. Please use this method as the last resort, only if your blu-ray drive doesn't work without DASPI and you've got "Please install DASPI" message from MakeMKV.

The following command has to be typed from the terminal in order to disable "approved by Apple" check for device drivers after next reboot:
Code:
sudo nvram boot-args="kext-dev-mode=1"


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