boot

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...

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...

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...

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...

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...

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...

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...

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

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...

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...