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  1. Manek43509

    MacBook Pro Makes Me Login Before It Boots Up

    Right, this is very odd. I have never seen this or come across this before, so I'm wondering what thoughts people have… I have an A1278 mid-2012 MacBook Pro which has been my workhorse laptop for many years, and I still love it. It runs on Mojave with no issues. But I wanted to do some upgrades...
  2. Alvin777

    Any Way to Boot FreeDOS, MS-DOS 6.22, 7.1 or MS-DOS 8 (if that Exists) Off an Intel Mac?

    Hello MacRumor, Apple and Mac friends. Is there any way to make FreeDOS, MS-DOS 6.22, 7.1 or MS-DOS 8 (if a real DOS mode, standalone of version 8 exists) boot on the Mac, specifically an iMac, be it off an internal Mac drive, external one, CD/DVD or via network (external drive like a USB-A...
    • Alvin777
    • Thread
    • boot external usb drive freedos mac ms-dos
    • Replies: 26
    • Forum: iMac
  3. Alvin777

    masOS Boot Volume Disappeares After Boot Camp Resize

    Hello Apple friends I was planning of backing up my Boot Camp volume so I resizzed it to become smaller with a Windows app, now, after it resized it to be smallwr even though Big Sur is still there, it wasn’t deleted, the iMac can’t find it, it won’t boot to Recovery Mode and if I boot to an...
  4. 268unlock

    macbook pro mid 2012 What can cause the SMC to repeatedly need to be reset?

    i have a MacBook pro mid 2012 ever so often it wont boot and i would have to reset the SMC what would cause this to happen. am in the Caribbean so their is no apple store close by
  5. 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...
    • hollja01
    • Thread
    • boot mac pro (2008) mp 4.1 mp 5.1 nvme pcie pcie adaptor sata ssd startup
    • Replies: 1
    • Forum: Mac Pro
  6. 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...
  7. 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...
  8. 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...
    • PG_iMAC8. 1
    • Thread
    • boot desperate imac
    • Replies: 9
    • Forum: iMac
  9. 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...
  10. 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...
  11. 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...
  12. 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...
    • nick7caz
    • Thread
    • boot boot camp assistant macpro 4.1 macpro 5.1 dual boot
    • Replies: 2
    • Forum: Mac Pro
  13. 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...
  14. 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...
    • HansBricks
    • Thread
    • boot keyboard macos mouse not working
    • Replies: 16
    • Forum: macOS
  15. 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...
  16. 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...
  17. 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...
    • DrEGPU
    • Thread
    • boot linux ubuntu
    • Replies: 18
    • Forum: Mac Pro
  18. 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...
  19. 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...
    • voraciousvegan
    • Thread
    • 2.5" ahci boot bootcamp pcie sata ssd w10 windows windows 10
    • Replies: 7
    • Forum: Mac Pro
  20. 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...
    • Cold.mira
    • Thread
    • bigsur boot catalina container macos snapshot volume
    • Replies: 5
    • Forum: macOS
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