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[Guide] Asrock UEFI Boot Fix

I did try to drive a third monitor via the VGA connector but wasn't successful. While Linux immediately detected it, popped up the display configuration app and even detected all the supported resolutions correctly, I could never actually get a picture on the monitor. If I disconnected one of the other two displays the VGA connection would work, but I could never Asrock H77M Instant Boot all three monitors at once. I tried lowering the resolution on all monitors to x to see if it was a total bandwidth issue, but no joy.

I haven't tried Windows on this motherboard but wouldn't expect any issues since the hardware seems to perform fine. Make use of this.

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If you haven't already done so, make sure your system is set to boot using UEFI instead of legacy. This Asrock H77M Instant Boot usually found in the boot settings of your bios. The way we do this is by using linux, working from the command line, using elevated privileges. If you are not comfortable with this then do not proceed.

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Elevated privileges mean you could easily cause damage to your otherwise shiny new OSX installation. Finally, if your Clover install is hosed or incorrectly configured, this method will not fix it for you. This is about helping the motherboard UEFI to 'see' the Clover bootloader correctly; it does not fix a broken or incomplete Clover install. So now you have read all that, what to do next? Follow these steps in order; do not deviate. Take your time and read the instructions very carefully. Part 1: What You Need Asrock H77M Instant Boot weapon of choice here is a good linux distribution.

You are free to choose whichever you like, but Asrock H77M Instant Boot must make sure that it contains the package 'efibootmgr', and also that it contains an EFI kernel module. This module if often called 'efivars'. The tested distribution at this time is Mint Linux.

This is a modern, up-to-date distribution, and contains the package and module described above. It does not require a network connection, which some other distros may need. Follow this link to download the version I used successfully. The instructions in this guide assume you are using this distribution, other distributions may be slightly different. You will need to Asrock H77M Instant Boot a bootable drive with the linux you downloaded.

Since the download is a standard. Make sure you do not overwrite your OSX Unibeast installer.

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Part 2: Press F11 or whichever key your system uses to get to the boot selection list. In the list you will see several entries, and the one you are looking for is UEFI and represents the drive containing your linux.

Here is what mine looked like: In this case, I wrote the linux iso image to DVD and booted from that. Only boot from the UEFI entry.


Using non-UEFI means it will not work as expected. Asrock H77M Instant Boot may seem odd that you have a UEFI entry for your removable drive with linux on it, but not for your system drive with the OSX installation. This is the quirk we are attempting to fix with this method. Wait for the linux desktop to load.


When launched, it displays a set of three main options, which Asrock H77M Instant Boot you to choose between fast or regular mode, or to disable it altogether. The regular mode uses the S4 ACPI and is able to boot your system in about 20 seconds from a shutdown Asrock H77M Instant Bootwhile with the fast mode, you will be able to see your desktop in about four seconds. Note that in order for any of these to work, the system must have a single user-account, which cannot be password protected. Otherwise, the purpose of the software won't be accomplished at all. ASRock Instant Boot ensures clean OS.

S3/S4 will slow down system, causing no response to the applications or system hang due to accumulated garbage data. Supports Intel® Rapid Start Technology and Smart Connect Technology Supports Intel® HD Graphics Built-in Visuals: Intel® Quick Sync VideoIntel®.

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