vao boot -s
/sbin/fsck -fy
/sbin/mount -uw /
sau do remove may cai card do hoa di
rm -rf /System/Library/Extension/AppleIntel*
rm -rf /System/Library/Extension/ATI*
rm -rf /System/Library/Extension/NVD*
rm -rf /System/Library/Extension/AppleIntel*
rm -rf /System/Library/Extensions.mkext
diskutil repairpermissions (cai này có thể k có tác dụng )
reboot