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Lenovo X220 cannot install VoodooHDA v2.8.4

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Thank you for the guide! I can boot into Mavericks on my Lenovo X220 successfully.

I am trying to get audio from my machine. After running Multibeast 6.5.0, I am presented with the following message:
-----
System extension cannot be used
The system extension "/System/Library/Extensions/VoodooHDA.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.
-----

If it is helpful, I have the following specs taken from a Linux USB on my X220:

system 4291A21 ()
/0 bus 4291A21
/0/1 processor Intel(R) Core(TM) i5-2540M CPU @ 2.60GH
/0/1/2 memory 64KiB L1 cache
/0/1/3 memory 256KiB L2 cache
/0/1/4 memory 3MiB L3 cache
/0/5 memory 6GiB System Memory
/0/5/0 memory 4GiB SODIMM DDR3 Synchronous 1333 MHz (
/0/5/1 memory 2GiB SODIMM DDR3 Synchronous 1333 MHz (
/0/d memory 128KiB BIOS
/0/100 bridge 2nd Generation Core Processor Family DR
/0/100/2 display 2nd Generation Core Processor Family In
/0/100/16 communication 6 Series/C200 Series Chipset Family MEI
/0/100/19 eth0 network 82579LM Gigabit Network Connection
/0/100/1a bus 6 Series/C200 Series Chipset Family USB
/0/100/1b multimedia 6 Series/C200 Series Chipset Family Hig
/0/100/1c bridge 6 Series/C200 Series Chipset Family PCI
/0/100/1c.1 bridge 6 Series/C200 Series Chipset Family PCI
/0/100/1c.1/0 wlan0 network Centrino Advanced-N 6205 [Taylor Peak]
/0/100/1c.3 bridge 6 Series/C200 Series Chipset Family PCI
/0/100/1c.4 bridge 6 Series/C200 Series Chipset Family PCI
/0/100/1c.4/0 generic MMC/SD Host Controller
/0/100/1d bus 6 Series/C200 Series Chipset Family USB
/0/100/1f bridge QM67 Express Chipset Family LPC Control
/0/100/1f.2 storage 6 Series/C200 Series Chipset Family 6 p
/0/100/1f.3 bus 6 Series/C200 Series Chipset Family SMB
/0/0 scsi0 storage
/0/0/0.0.0 /dev/sda disk 128GB SAMSUNG MZ7PA128
/0/0/0.0.0/1 /dev/sda1 volume 119GiB Darwin/OS X HFS+ partition
/0/2 scsi6 storage
/0/2/0.0.0 /dev/sdb disk 8178MB SCSI Disk
/0/2/0.0.0/1 /dev/sdb1 volume 7799MiB Windows FAT volume
/1 power 42T4861


Thank you for all the guides and help!
 
Thank you for the guide! I can boot into Mavericks on my Lenovo X220 successfully.

I am trying to get audio from my machine. After running Multibeast 6.5.0, I am presented with the following message:
-----
System extension cannot be used
The system extension "/System/Library/Extensions/VoodooHDA.kext" was installed improperly and cannot be used. Please try reinstalling it, or contact the product's vendor for an update.
-----

Repair permissions & rebuild cache.
 
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