


The first 10 tests – tests number 0 through 9 – are straightforward: each test writes a specific pattern of bits to a section of your computer’s memory. There are up to fourteen different tests that MemTest86 can do on your computer’s memory.
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Boot into the device on which you installed MemTest86 and the software will run the tests automatically. The software is installed onto a USB flash drive or CD. MemTest86 is made and maintained by PassMark Software. MemTest86 is a program that tests the entire range of a computer system’s RAM. MemTest86: A program that provides robust testing of your computer's memory. So let’s dive into how we discovered the MemTest bug, devised a reliable work-around, and get into some nitty gritty details of MemTest86 operation. But there is good news: while normal operation of MemTest86 is limited under these new EFI updates, we also discovered some simple workarounds for testing your Apple’s memory in MemTest86. In short, the newly updated EFI causes MemTest86 to incorrectly fail certain tests. At Beetstech, we use a long-time industry standard, MemTest86 to perform a comprehensive test of each computer’s RAM.īut never the type to blindly accept test results, strange testing outcomes led us to discover a bug in MemTest86 affecting computers running the new EFI firmware. However, these EFI updates can cause some unwanted behavior when you test your Apple computer’s memory. Several of the changes include: the introduction of the Apple File System, support for NVMe drives, and the usual batch of security updates. I will use my system for a while under this configuration over the next few days, and report on how it goes in practice.With macOS 10.13, otherwise known as High Sierra, Apple introduced an ambitious EFI update. However, apple seems to have problems reporting the fact i have 2x 16 GB sticks. So it *seems* so far, that OS X (both the operating system and menumeters) now recognises my 32 GB of memory. Okay., So I reboot the system from the USB drive which has the modified memory settings. If i open the ist file again in Clover Configurator, i get: I then modified the memory size from 8192 to 16384:

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(You need to install Xcode development environment to do this next step). I used the following memory settings.Īfter saving those changes, I then double clicked on the EFI/EFI/CLOBER/ist file to open the plist file in Xcode. I experimented by changing the SMBIOS settings in the ist file on a USB boot stick by using Clover Configurator. Has anybody else got any experience with using 16 GB sticks with El Capitan? Is there any special care required over and above the guidance provided in. When I try to use Clover Configurator (Vibrant Edition) 4.25.0, there is no option to set 16 GB of memory per stick. I am aware of the SMBIOS tweak, as described here. 16 GB installed (2 sticks of 8 GB, with 2 slots free).
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The memory tab reports: Your Mac contains 4 memory slots, each of which acceptsa 3200 MHz DDR4 memory module. The overview tab reports: 16 GB 3200 MHz DDR4 However, in theMenubar / Apple / About this Mac window: The operating system appears to use the entire 32 GB. That is, I have installed 2 sticks of DDR4, each stick of DDR4 being 16 GB in size. I have purchased and installed one set of G.Skill F4-3200C16D-32GVK ( ). I have setup a El Capitan on a Skylake (Asus Maximus VIII Ranger). Building a CustoMac Hackintosh: Buyer's Guide
