srock61

hello,

did anyone try to flash stock bios? i try to flash my backup .bin file but i got this error.

PDR Region does not exist.

GBE Region does not exist.

Error 28: Protected Range Registers are currently set by BIOS preventing flash access.

Please contact the targetsystem BIOS vendor for an option to disable Protected Range Registers

Solution: After enabling back bios flash option in current bios, i flashed stock bin file without problem.

Can't you choose "UMA" from BIOS instead of "Discrete"?

FYI You can boot into OS X with or without Ultrabay. The actual problem comes with enabling Graphics Acceleration. Switchable graphics WILL NOT work with OS X.

One more thing, using DSDT from another computer is a very bad idea even if its the same model/pc. A small change in ACPI can result in unexplained behaviors. I would advice anyone not to download or use DSDT from internet.

PS. Its pretty easy to extract your ACPI tables (DSDT, SSDT etc) from any OS. RW-everything in windows for example.

Before, I installed hackintosh to several machines. But I fail on y500. I tried with my own patched DSDT, with combinations of boot flags, clover - chamelon, w/w-o ultrabay. Removed Intel - Nvidia etc kexts, patched mach_kernel etc etc. Nothing works. Best way is installing it to vmware.

It's not that difficult to install OS X in y500. In my y510p it's running flawless without any probs.

in y510p, when you remove sli card, you can use intel hd graphics. But in lenovo y500 you cant. So install fails. Laptop shut downs instantly.

Can anyone please help me?

flash bios with white list removal,

uninstall your current driver from device manager,

install your new wifi card,

boot to windows and install wifi driver.

after doing the mod if I change my hard drive will I have to do it again?

no, you install bios to your motherboards rom. not hard drive.

Hey there, I've tried some patching, but my Y500 does not even boot from a USB Boot Medium.

USB-Boot Option ist enabled in the Bios (2.04)

I Have the Y500 with the HD ready Display und the Core i5.

Can Anyone help me ?

you should enable legacy boot support in bios too if you booting non uefi media.