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Nvidia gt 620 black screen on Mavericks 10.0

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Hello guys i have a nvidia gt620  2gb which perfectly works  on ml 10.8.5. I recently installed mavericks and i experienced black screen on boot. I can see desktop with generic vesa driver but i cannot find any kext to make my gpu fully operational. I recently read that nvidia series are obb on mavericks. Any ideas?

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Use this flags 

GraphicsEnabler=Yes PciRoot=1
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Hello guys i have a nvidia gt620  2gb which perfectly works  on ml 10.8.5. I recently installed mavericks and i experienced black screen on boot. I can see desktop with generic vesa driver but i cannot find any kext to make my gpu fully operational. I recently read that nvidia series are obb on mavericks. Any ideas?

Boot with -v GraphicsEnabler=No once you booted replace the copy this kext from 10.8.5 NVIDIAGF100Hal.kext and replace it in

System/Library/Extensions/

and make sure always boot with GraphicsEnabler=No or add

<key>GraphicsEnabler</key>

<string>Yes</string>
In you OCBP.........:D

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Thanks for your replies. Deepak's answer works perfectly.  I did not try the HackintoshMumbai way. Thanks both anyway!!

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