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boot

  1. M

    New 2020 5k iMac having trouble with 4 new dimm sticks. 3 new +1 OEM work just fine. :o

    Howdy, I bought a 64gb ram upgrade kit from OWC for my brand new 2020 5k iMac, 27 incher. However, strange boot issues abound when I try to install all 4 sticks at once. 2 OEM sticks and 2 empty slots = boot normally 1 OEM stick + 3 OWC sticks = boot normally 4 OWC sticks = failed boot When...
    • manhattanmac
    • Thread
    • boot imac issues memory owc problem ram
    • Replies: 24
    • Forum: iMac
  2. T

    iMac no longer recognizes USB installer

    Hi folks, my 2019 5K iMac (which came with Mojave from factory) doesn't recognize when booting (with alt key pressed to access the boot options) a USB installer of Mojave and backwards (El Capitan etc), they literally don't show up when boot options appear. Funny thing is, it ONLY recognizes a...
    • torbarr
    • Thread
    • boot firmware imac mojave usb installer
    • Replies: 2
    • Forum: iMac
  3. AveryWrubleski

    iPhone X - Apple Logo Boot Issue - STORAGE FULL

    Hey everyone, This morning I woke up to my iPhone X stuck in reboot mode (Black Screen & Apple Logo). I was just on a long trip and accumulated tons of media which is why my storage is completely full. I am desperately trying to figure out how I can fix this WITHOUT performing a factory reset...
  4. Z

    White screen at boot

    On my 27" corei7 mid2010 iMac, i get every now and then a white screen, that seems to cover up the users login page. This occurs just before the Apple logo and the Chime sound. Normally when this occurs, thinking that its a freeze, i do a restart by using the power button. But today i acted as...
    • zoran
    • Thread
    • boot imac white screen
    • Replies: 5
    • Forum: iMac
  5. L

    Startup Security Utility Password

    The T2 chip and Apple SSD is more interweaved than I or the Apple Tech Support thought. I installed a Samsung Nvme 970 Evo Plus via Pcie slot in my 2019 Mac Pro to serve as the OS drive. This would leave the original 4TB Apple SSD that the Mac came with as my Media drive for video editing...
  6. A

    How do I boot to Windows 7 (32 bit) with my Macbook 2017 running Catalina?

    Bootcamp will not let me install anything besides window 10 and I cannot find the instructions to create a bootable windows 7 usb using catalina anywhere online. Please help!
  7. zachek

    MP 1,1-5,1 Mac Pro 5,1 won't boot

    I purchased this 12-Core Mac Pro 5,1 (see my sig) as-is a few weeks ago from a local reseller for a very low price. They had almost two dozen they were looking to move and in hindsight. I probably should have bought two for parts redundancy alone. My plan was to spec it out (mostly for photo...
    • zachek
    • Thread
    • boot mac pro (2012)
    • Replies: 6
    • Forum: Mac Pro
  8. A

    Can't boot to Mac OS after inserting Win10 HDD

    Recently I have to inserted functional Windows 10 HD from another Mac Pro 5,1 into one of empty HD bays inside Mac Pro 2,1 2007. I didn't touched Mac OS Drive. Selected Windows volume as startup disk, restarted and Windows successfully worked. But now i want to start Mac OS on another drive and...
  9. md053

    Mac mini wont start and wont going recovery mode

    So my mac froze and after rebooting there where some issues with a program so I did another reboot and this time it will stop and shutdown if it is in the logo boot screen(it runs for 75% and stops). Even when I try to to cmd+r it wont go into recovery mode. Is there another fix as I need the...
  10. O

    MP 1,1-5,1 Working guide to reinstall MacOS on Mac Pro 3.1 (2008)?

    Hello, I've trawled the Internet and performed so many steps I can't recall now! I have a 2008 Mac Pro 3.1 which I want to sell on and have taken the hard drive out. I simply want to install MacOS (any version) onto it to resell and have a fresh working OS to sell/demonstrate that it works to...
    • omega2812
    • Thread
    • boot mac pro 3.1 early 2008 macos
    • Replies: 5
    • Forum: Mac Pro
  11. sibby

    Macbook pro won't start - goes to startup disk hard drive boot screen

    Hi folks, I have a fairly old Macbook Pro (I think it's 2011/12). I was using it last night then the battery cut out. When I went to charge it up and power up, it gave me this screen (pic attached). Do you know why this has happened, and do you have any advice as to steps I should take? I...
    • sibby
    • Thread
    • boot harddrive macbook macbookpro 2012 recovery disk startup
    • Replies: 2
    • Forum: MacBook Pro
  12. Sean Udy

    How do I remove the Catalina patch?

    I have a mac pro 2008 3,1 system 2 x 2.8 GHz Quad-Core Intel Xeon 8 GB 800 MHz DDR2 FB-DIMM ATI Radeon HD 2600 XT 256 MB I recently installed the Catalina patch, but now my system is running more slowly and I'm having issues with apps. So, I just want to wipe my system and install whatever...
  13. !!!

    iMac G5 (PowerMac8,1/A1058) Boots to Apple Logo, fans spin up

    So I recently got an iMac G5 from a goodwill with nothing but the iMac itself and the power cable. Whenever I try to boot it up, it powers on and displays the Apple Logo, but doesn't progress any further. The fans also spin up quite a bit. I'm able to get into the drive selector (option key at...
  14. ernestostifano

    Mac Shuts Down After Boot Logo

    Hi everyone! This is the thing... MacBook Pro (Retina, 15-inch, Mid 2014) Multiple Partitions (macOS Mavericks, macOS Catalina, Windows 10, Linux) My SSD disk has a pure GUID partition map, al operative systems are installed in pure EFI mode. No MBR. Everything worked fine until I updated...
  15. D

    I tried to install Windows 10 Pro using BootCamp and now the EFI boot screen is blank (black)

    I am using a Mac Pro 2013 6-Core 3.5GHz 64GB RAM Dual D500 machine with a fresh install of macOS Catalina 10.5.3 which was working like a charm (flawlessly) until I tried to install Windows 10 Pro (64 bits) using BootCamp, everything went fine until macOS asked to reboot the machine to continue...
  16. D

    iMac (late 2013) boot from usb slow

    Hi everyone I have a 27'' iMac - late 2013 currently running: - Intel Core i5 4570 3.2 GHz - 16 GB DDR3 - 1 TB HDD (I can't remember if it's 5400 or 7200 rpm) Due to slowness I've recently attempted to boot from an external SSD (Samsung T5) using USB 3.0 rather than running off the slow hard...
    • deehappy
    • Thread
    • boot imac ssd usb 3
    • Replies: 6
    • Forum: iMac
  17. Stez

    MP 1,1-5,1 cMP won't boot macOS SSD or HDD

    Hey folks, I'm wondering if someone can help me. I've been struggling for a few days with a grey boot screen when booting my 5.1 (4.1) Mac Pro. I installed Windows in what I thought was legacy mode using VMWare Fusion on macOS using the .vmdk method. Afterwards I could boot into Windows 10...
    • Stez
    • Thread
    • boot bootcamp cmp cmp 5.1 windows
    • Replies: 2
    • Forum: Mac Pro
  18. E

    Boot Keystrokes done work on internal Keyboard

    Hello, I have an Air early 2015 and for some reason when I try to do any sort of key stroke on startup, such as holding option to select boot drive it just doesnt work. However when I plug in an external keyboard it works just fine. Does anyone know whats going on here? What can I do to fix this?
  19. B

    MP 1,1-5,1 Macvidcards Titan X will only boot via DVI Mac 5.1

    Hi there, I have a flashed Macvidcards Titan X in my 2010 Mac Pro 5.1. Since installing the Titan about 4 years ago I've only ever been able to get my machine to boot while using the DVI cable connected to an old monitor the grey apple logo appears after some Commandline text- once it reaches...
    • Ben Trahair
    • Thread
    • boot bootcycle mac5.1 macvidcards titan x
    • Replies: 7
    • Forum: Mac Pro
  20. Ben Homer

    Can't install OS on iMac

    Hey Guys, First time poster here :) Hoping someone can help. I have an old iMac - A1312 (2009/10ish) that I'm trying to get working. If I try to boot from internal HDD, I get the question mark folder so am trying to reinstall OSX (High Sierra). Internet recovery prompts me for WiFi and then...
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