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boot

  1. S

    Other Samsung SM951 AHCI SSD bootable Mac Pro 5.1

    Hi. Guys, can someone confirm to Samsung SM951 AHCI SSD bootable for Mac Pro 4.1 or 5.1 under legacy boot. this I need for install windows 7 on nvme and boot is in legacy. or what nvme drive with AHCI can boot in legacy - for Mac Pro thanks.
  2. M

    MP 1,1-5,1 Monterey won't boot after restore VMM flag and SMBIOS to default, Opencore Martin Lo.

    I've BigSur on an ssd on a pcie slot, and Monterey newly installed in another, I've installed Monterey after turning ON the VMM flag and SMBIOS spoofing OFF, but when it finished, and reset the two tweaks to default to get full acceleration as recommended by Marin Lo, Monterey can't boot, it...
    • mohnumber7
    • Thread
    • boot mac pro 5.1 martin lo monterey opencore smbios vmm flag
    • Replies: 0
    • Forum: Mac Pro
  3. Alvin777

    Is there a Way to Install Windows (Overwrite, not Fresh Install) onto Another Drive to fix Boot Loop

    Hi Mac friends. Is there a way to install to overwrite the possible corrupt files without data loss (everything is intact) of my Boot Camp Windows 11 (internal drive, Windows build is 22H2) using my backup Windows which is a Windows to Go (build is 23H2) like you would with macOS (you could...
  4. D

    MP 1,1-5,1 Mac Pro 5,1 not starting

    I have a Mac Pro 5,1 that stopped booting. (no fans, no chime) plugging / unplugging PSU make red LEDs quickly blink as it is expected. DIAG button only shows yellow 5V LED Power button doesn't do anything. Shorting sys_pwr (vertically or horizontally) doesn't do anything also What I've tried...
    • dmtr
    • Thread
    • boot mac pro (2010) startup
    • Replies: 13
    • Forum: Mac Pro
  5. M

    “The sampled color is not equal to the first color, this isn't an Apple logo boot image.”

    What does it mean when the installer said, “The sampled color is not equal to the first color, this isn't an Apple logo boot image” during install?
    • MilkandGin
    • Thread
    • boot installer problems macos
    • Replies: 8
    • Forum: macOS
  6. MacProRumours

    MP 1,1-5,1 SLED positions left to right — 1, 2, 3, 4

    Curious as to whether the position of HD/SSD sleds makes any difference between slots one, two, three or four? The presence of a non-bootable—and also unrecognised 8TB HD—in the left-most position, on start-up appeared to prevent the machine from advancing beyond the chime, despite the presence...
    • MacProRumours
    • Thread
    • boot cmp drive order position power sequence sled slot ssd
    • Replies: 2
    • Forum: Mac Pro
  7. janpieterduhen

    MP 1,1-5,1 Mac Pro 4,1 (2009) only booting into recovery mode

    Hello, hope anyone has a tip to get my Mac Pro 4,1 booting into the OS. Symptom: no matter what I try, this Mac keeps just booting into recovery mode. (GFX are fine, nice gray screen with apple logo -> recovery-mode) Failed attempts so far: - remove all disks and do clean install from USB-stick...
  8. jimmieb45

    Upgraded to Ventura from Monterey and bricked my computer. Help?

    Hi friends. I was upgrading to Ventura from Monterey 12.4 this morning and my power cut out. My 2019 27inch iMac is now bricked and only runs the fans at max speed after pressing the power button. No screen turn on, all black. I've attempted the usual power cycle, pram, smc, etc to no avail...
    • jimmieb45
    • Thread
    • black screen startup boot bricked fans high monterey screen black ventura
    • Replies: 13
    • Forum: macOS Ventura (13)
  9. blackxacto

    Why is Boot+Apple+Option+R so slow now?

    !9,1 iMac, macOS 12.6: So I want to boot into web repair mode. I shut down, then hit Power button and hold Apple+Option+R. Why do I have to sign into my network router now, never before On Ethernet? Why is the booting process taking so very long once I sign into my network, the process crawls...
  10. C

    Boot issue

    While I guess I’m not completely computer illiterate, as I get older it feels like I’m not far from it. Always before, when I’ve had problems I’ve been able to come here and, after some searching, find the answer to my problem. This time, maybe because I got frustrated, I didn’t think to come...
  11. DrEGPU

    MP 7,1 Slow boot when adding more drives?

    I tried Googling this but only get generic answers or solutions to different problems. I recently reacquired a Mac Pro (7,1) and it worked well initially. When I added 2x spinning disks and a SATA ssd using a sonnet J3i, it takes a long time to boot. The spinning indicator spins for 3-4...
    • DrEGPU
    • Thread
    • boot hdd slow ssd
    • Replies: 1
    • Forum: Mac Pro
  12. tensixturtle

    Booting From FireWire 400 Hub

    Hello, I was wondering, if I were to get a FireWire 400 hub, can I boot from things connected to it? I am asking because my iBook G4 only has one FireWire port and I wasn't sure if this is a viable solution. FireWire drives are pricey and I know that I can't boot from a drive connected to my USB...
  13. N

    Activate USB-C monitor during boot?

    I own a MacBook Pro from 2017 which originally cost $3,000 direct from Apple. In October, the TSA was doing a random search of by bags during travel and stepped on my MacBook. Despite a clear footprint, they claimed they received it that way. In either case, the left-most 3" and bottom-most 2"...
  14. H

    My iMac completely ignores when I hold down alt at boot

    I've tried two wired keyboards, one of them Apple, but it just goes straight to the internal SSD. No options. How do I fix this? It's a 27 inch 2009 model, feel free to move this to 'Early Intel' if needed. Thanks!! x
    • Heeheeriah
    • Thread
    • alt boot core 2 duo help imac option key support
    • Replies: 11
    • Forum: iMac
  15. E

    Macbook Air a2179 failing to complete boot

    Hi, trying to fix a friend's MacBook air (early 2020). A drink was spilt over it last year, so opened it up and it's in great condition as only had to clean the usb-c ports which had gone bit crusty. Then plugged it in to charge and it loads to the last bit of the status bar then will reset the...
  16. blackxacto

    Anyone having restart issues in Monterey?

    19,1 iMac, macOS 12.1, 64GB Ram: If I am running Monterey and decide to RESTART, I do not restart w a working keyboard(cabled). I have to shut down completely, then click power button to boot. Then my keyboard is recognized, so I can sign-in to my administrator account. I haven’t had this...
  17. E

    MP 6,1 MacPro Late 2013 6,1 Booting issues -- Black Screen

    Recently I experienced some issues booting. I sent it to Apple they replaced the GPUs, Logic board, and a few cables. I got it back yesterday and it still is having issues booting correctly. The boot issues are the following, it boots perfectly fine into Windows 10. If I restart my computer and...
    • emersive
    • Thread
    • black screen boot macos macpro 2013
    • Replies: 1
    • Forum: Mac Pro
  18. SCavndrF

    Can't boot from SSD due to Yosemite Recovery

    I have 3 MacBook Pros that I updating and installing SSDs. Two are 2015 and one 2014. All 3 are using the same 3rd-party SSD. Two are all running Catalina. One keeps coming up with Yosemite. It will NOT see the SSD during installation. So I created a USB installation drive with Catalina on...
  19. P

    2013 Macbook Pro won't boot after failed OS upgrade

    I have an older Macbook Pro, A1398 EMC2673 (2013) Core i7 which seemed to be working fine. Because I'm an idiot, I downloaded an update to the OS and installed it before I did a backup. Now it won't boot. I can turn it on and get to the login screen. I put in my password and the status bar only...
  20. N

    MP 1,1-5,1 5,1 boot issues

    Have Mac Pro 5,1 that I’m having problems booting. It loads is to about 3/4 on progress bar and stalls. Have recently installed open core legacy patcher to run big sur and does the same using open core boot picker. Ok this is what I’ve tried so far Reset pram, changed battery on main...
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