boot

  1. H

    MP 1,1-5,1 MP 5,1 (4,1) doesn't boot from PCIe NVME blade

    Greetings. I am on: 4,1 MP flashed to 5,1 Radeon RX 580 64 GB RAM 2x 3.33 GHz 6-Core Intel Xeon Catalina (10.15.7) Boot ROM MP51.0089.B00 SATA SSD as boot disk 2x NVME M.2 blades via PCIe adapters on my two PCIe 4x lanes remaining after putting in the GPU (which covers my two 16x lanes) All...
  2. B

    MacBook Air won't boot MacOS from new SSD but works with Ubuntu

    Losing my mind trying to problem solve this one. Have replaced an old SSD after it failed. Figured a new SSD would do the trick but after installing Mac OS on it and installing it in my MacBook all I get is a folder with a question mark. Disk utility won't load, connecting to online server just...
  3. G

    Power Cut Out When Updating OSX From Mojave To Big Sur

    I have a large problem As the title describes my power cut out (faulty power cable) when I was upgrading from Mojave to Big Sur about a month ago. My 2015 Macbook Pro now won't load past the Apple logo and my Macintosh HD partition won't mount no matter which method I use. I have a second...
  4. P

    I'm lost all the support will be welcome

    Dear all I have a 8,1 iMac which I just update with 8GB ram and a SSD CRUCIAL MX500 (1 TB - SATA - 560 MB/s). I create a bootable El Capitan usb with transmac and GPT partition. I thought I had all I need but I the true is I can't make the iMac boot by the USB. I tried different. dmg (old...
  5. Q

    Unable to Boot Windows from External Hard Drive on MacBook Pro

    Lately, I've been trying to create a bootable USB drive with Windows installed on it that I can plug into and boot on my MacBook Pro. I followed this tutorial to the word, right up the part where he modifies the boot security settings to permit booting from external sources. My Mac is old enough...
  6. JulianBoolean

    Dual 30" Apple Cinema Displays | Sync / Power Problems on Boot MP 5.1

    Intermittent Problems: On Boot ups, sometimes only one monitor will power up. Sometimes neither monitor will power up. Sometimes power to the USB ports will work, sometimes not. A Good Boot Up Sequence For My System : 0. Push power button on Mac. 1. I will see the power light come on my main...
  7. A

    Strange boot loop

    Hi, I’ve searched the interwebs high and low for an answer to no avail. I bought an original MacBook from a friend with a qwertz German keyboard. It was woefully slow and overheating so I opened it up and cleaned it best I could, and put on new thermal paste. It only worked intermittently while...
  8. nick7caz

    Resolved Flashed 5,1 2009 MP, need help Reinstalling OS

    Sorry if this has been discussed. Recently acquired a 2009 MP 4,1>5,1 with RX 580. I can see the os image from the bootcamp viewer, but it wont boot into macos Catalina. It will just re boot into windows. I may have deleted the macos boot from the image, but not sure. Holding option brings...
  9. S

    MP 1,1-5,1 Opencore not showing Showpicker on MSI RX 580 GAMING X 8 GB GPU

    Showpicker not shows on MSI RX580 Gaming 8GB GPU, however GT 680 was shows shows picker mode,Rx 580 frame buffer detected as Radeon Frame buffer ,after installing Radeon boost Kext enable H264 & HEVC ,Performance not the best expected for RX580 card with MacPro 5.1 with dual tray 3Ghz processor...
  10. HansBricks

    Keyboard and mouse do not work after initial startup

    Hello, I use a Mac Book Pro (running Mac OS Big Sur 11.1) for my desktop setup, which is connected to a Logitech MX Master 3 mouse, as well as a Logitech MX Keys keyboard ... I also use three external monitors - my Mac Book is in a stand and and turns on automatically as soon as I turn on the...
  11. DrCanard

    How to upgrade to 64bits windows on a 4,1 macbook ?

    Hi dear mac users, I recently acquired a Macbook 4,1 from early 2008. Unfortunately the latest version of macos supported is Lion. I managed to upgrade it to Mountain Lion and Mavericks (but that last one lost the graphic acceleration). The impossibility to use modern apps on those system made...
  12. S

    2008 iMac 10.5 boot stuck on blue or multicolor screen

    Hey guys, I'm having a huge problem. This morning I was working on a project on PT 8 LE on my 2008 iMac (10.5), when suddenly a plugin crashed. I had the multicolor wheel cursor for a while and couldn't force-quit or anything, so I rebooted my mac. Since that moment, the mac hasn't been able...
  13. DrEGPU

    MP 7,1 Trouble installing/booting linux ubuntu

    I'm trying to install any debian-based version of linux (ie, Ubuntu) on my Mac Pro 7,1 but am unable. I ran the Ubuntu desktop live-usb one time and managed to get ubuntu mostly installed on a separate nvme drive in a PCIe slot, albeit ruining my windows bootcamp partition on the Apple internal...
  14. robertcoogan

    Problems with chnages to firmware on boot

    I used to use rEFInd as a boot loader, but with the upgrade to Big Sur there have apparently been changes to the firmware that interferes with rEFInd's operation. So I am back to holding down the option key. Yay. <--(sarcasm) If I tried to boot normally, rEFInd should kick in and take me to...
  15. voraciousvegan

    MP 1,1-5,1 Windows on PCIe SATA SSD?

    4,1->5,1. Can I boot W10 on a PCIe 2.5" SSD if I'm just cloning my current W10 over, not a clean install (as I understand, you can't clean install over PCIe)? When I was initially installing W10 on this Mac Pro, I remember it was impossible to do thru Bootcamp, although Bootcamp drivers were...
  16. Cold.mira

    Resolved OS boot volume weirdness(?) in Disk Utility

    Hello, today while encountering some problems in trying to install the official release version of Big Sur (was on DevBuild/Public Beta before) i've noticed this... Macintosh HD in Container disk1 is greyed out and can't mount it, the text at center height in the main window should be...
  17. nfable

    Considering NVMe M.2 boot for 2014 iMac 5k, Have Questions

    Hi - in my iMac 15,1 I have USB 3.0 and ThunderBolt 2. I am considering an external enclosure connecting via TB as a boot option if I will see appreciable performance gains. I have a 1TB Fusion drive going on now. Looking for connecting 2 NVMe's. A double enclosure would be choice. One...
  18. P

    Late-2011 MacBook Pro doesn’t boot

    Hi, I just wanted to introduce myself by asking for help. I was introduced here by B S Magnet because I was told you folks are a community around PowerPC/early Intel-based Macs that are no longer supported by Apple. I know the MacBook I currently have is notorious for its finicky GPU, but with...
  19. W

    Help troubleshooting a problem

    Hey guys so I've got an iMac mid 2007 24" model number a1225 and I'm having some issues with it. When I try to boot up the computer I hear the chime and then the screen stays white and I get nothing. I've replaced the hard drive so I know that's good. I have software available to load I've...
  20. slimmy18222

    MacBook Pro Retina 15 late 2013 won't boot. Please help!

    Unfortunately I’ve got a big problem. Let me introduce myself, I’m Covid-19 researcher based in northert Italy, just a bit abroad from you. I constantly work with my MacBook 15” late 2013 and I have a tons of patients data inside it. Suddently my MacBook stop power on for no reason (no Water no...