efi

AS REQUEST OF EXPÉRIENCED MEMBER, I'D LIKE TO MENTION AT THE BEGINNING, THIS TOPIC IS BASED ON MY OWN TEST, I BOUGHT THESE CARDS, MAKE EFI ROM DIRECTLY ON NETKAS SCRIPT, WITHOUT ANY OTHER MODIFICATIONS, AND FALSHED BACK THEN TESTED ON MAC PRO 5.1, 3.1, SO THIS IS AND ONLY IS A PERSONNAL ADVICE...

Hello, I know if I remove the whole internal HDD and I install only Linux, it will not work. Therefore, I think of keeping EFI and Recovery Mode, so Linux partition would. I looked at the topic Can I replace MacOS with Ubuntu but keep my Windows partition?. But he did not say he removed or did...

Hi, After a loong time (almost 2 years), I had some time today to try one more time to revive a Mac Pro 4.1 that I had to stash away since it died on me back in April 2017. The original post was this...

I'd like to try downgrading from a MacPro5,1 firmware to a MacPro4,1 (for testing). The machine was originally a MacPro4,1. I flashed it to a 5,1 and then installed macOS High Sierra (which updated the firmware in the process). I have both a Sapphire Radeon GTX 580 and an Nvidia GT 120...

I'm attempting to try out Next Loader. However I've run into a problem with the `bless` command (not with Next Loader itself). `bless` can't seem to change or read the efi-boot-device NVRAM variable. This is on a MacPro4,1 flashed to a 5,1 running macOS 10.13.6 from a SATA SSD formatted as...

I've been searching for hours and can't find a straight answer. Is it possible to flash an RX 580 to get the boot screen?

Do the RX Vega cards need to be flashed to work with the old Mac Pros? I've done a lot of research about Nvidia cards, but I don't really know how it works with the AMD cards. I've seen some stuff about editing kext files. If you do that does it work with the EFI, or would it need to be flashed...

Heya! I saw gilles_polysoft made a miracle and gave our dusty machines to native NVMe abilities. I look at his twitter and he can edit Apple Efi with UEFITool. I am familiar with this kind of editing. I just ask myself to why didn't Apple release efi/bootrom files to public for corruption or...

Hi I have a Asus GTX 660 OC with 2GB Ram working fine in Mac Pro 3.1 It´s avaible a Efi Bios for that card? Thanks

Topic closed

Why is this happening? This has happened with any type of storage - HDD, SSD, and flash drives. Example: “Drive A” works fine with 1TB of data. Then, when hooking it back up, my lap top turns it into “MyBook” and EFI” with both partitions showing no data. Would doing a fresh reinstall of...

Hi, I just tried to move my whole main drive partition (It was just 1 "usable" that I was aware of, with Mac OSX High Sierra) to a new Samsung EVO 850 1TB Harddrive. I had to initialise it and convert it to "GPT"-format with my Windows 10 Desktop, because the installer tool from High Sierra...

Just updated my flashed cMP 4,1 and I can't use my GTX 1080 Ti anymore. Usually, I can remote login just after an update to fix driver issues but I can't-do that either anymore. The only solution that has worked, so far, is switching back to the stock GTX 120. The firmware update and 'upgrade'...

I am running 10.12.6 and have 5 old hard drives connected to my Mac, each of them had previous OS on them at one point or another.. I am trying to keep all the user/application and other data on them, but remove the OS system and library folders. The problem is, as soon as they get put in the...

Hey guys, A quick bit of background. Woke up one morning to an email from Apple saying my account was accessed. Because of this I quickly changed my password and security questions to re secure my account. All seemed well until I turned on my Macbook Air to find the hacker had applied an iCloud...

Hello, (my first post, please be patient if I don't get things quite right yet) I currently run a Mac Pro 2,1 (OS 10.6.8) which I am considering to replace with a Mac Pro 3,1. Even though the 2,1 is 64-bit architecture (but 32-bit EFI) it runs quite successfully some of my old 32-bit software...

Since 2012 I own an iMac computer model A1311. In December of 2016 it had installed the latest version of "OS X El Capitan" 10.11.6. In mid-December 2016, I received a balloon or notification on my own computer about a "security update for the operating system." Namely 2016-003 (see...

Hi again people, As you may be able to deduce from my recent posts I'm currently playing around a bit with my 2009 4,1 with 5,1 update. I have recently installed a flashed XFX 5770 and despite probs with known issues such as pci fan speed and display port output was pleased with how it was...

Hi all, long time lurker first time poster. I've got a Mac pro 4.1 2.26Ghz that has been flashed with 5.1 firmware. The issue is that I've just installed a flashed XFX HD 5770 like this one to use as a back up card and it all works fine apart from the mini display port. I get the apple logo and...

I have a 2006 Apple Mac Pro 1,1 that I have upgraded the CPU's to 2x Intel Xeon X5355 SLAEG CPU's and upgraded the ram to 11GB. I have also flashed the firmware to the 2,1 firmware and installed Yosemite with SFOTT. I have also upgraded the Graphics card to a Zotac GTX 570 1280MB . I have been...