Questions about booting, the process of starting a computer and putting it into a state of readiness for operation.

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1answer
20 views

Hard Drive Change SSD - Macbook Pro

My Macbook was slow, and then i've want to make it faster, it is a Macbook Pro from 2011 or 2012, can't remember it. I bought a Samsung SSD 850 EVO. Firstly what i did, was to take out the old ...
0
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0answers
20 views

OSX Yosemite bootable usb drive circle slash (“no” symbol)

I have a Late-2011 Macbook Pro (4GB RAM) that has been running slow for several OSX cycles, and since Mavericks it's been unbearable (spinning beachballs whenever you do anything). I tried upgrading ...
0
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1answer
26 views

MacBook Pro won't start up

This is a 15" 2010 model that came with OS X 10.6 and now has 10.10 installed. After turning the computer on I can hear the startup chime and the power adapter indicator light lights up. The Apple ...
0
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0answers
35 views

Why does my MacBook Pro (mid 2010) not boot OS X 10.9.2?

My MacBook Pro mid 2010 does not boot anymore from the HDD with installed OS X 10.9.2. I came across this solution which is clearing the NVRAM, but my Mac keeps showing the Apple logo and a spinning ...
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0answers
23 views

OSX intall usb key not detected

I've trying to reinstall a clean OS X Yosemite on a Mac Book Pro (mid 2013 model) for the past few days but had no success. I created a bootable usb drive using createmediainstall (as on this: ...
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votes
2answers
126 views

How do I repartition my Mac to get rid of my dual boot setup?

I setup dual boot on my Mac (with Ubuntu) and want to get rid of it. The Disk Util GUI shows me: However attempting to remove the disk0s4 or disk0s5 partitions results in: Could not unmount ...
1
vote
1answer
23 views

Disk Utility works forever at trying to repair partitions

My computer froze yesterday while I was using a browser. I restarted and never got past a plain white screen. Finally was able to boot from a different drive and ran disk utility on my main boot drive ...
0
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1answer
37 views

Cannot press Shift+T in OS X

Since a few days, I am not being able to press T and any other key on my Wired Apple Keyboard. Nothing happens when I press Shift and T. Keyboard shortcuts like Cmd+Shift+T don't work. Cmd+T works. ...
0
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1answer
60 views

Slow Internet Mac Yosemite Recovery Doom (MacBook Air, Early 2015)

Product: MacBook Air(early 2015) with OS X Yosemite. The issue is, that I happen to have my Yosemite reinstalled, so I restarted my MacBook and at the sound of the chime(startup sound of Yosemite), I ...
2
votes
0answers
40 views

Why does my USB hub hide a directly attached drive from the boot menu? (post-Filevault)

I recently enabled FileVault on both my mid-2012 Retina MacBook Pro and my external USB drive containing a Carbon Copy Cloner backup. My external drive is attached directly to the MBP. I also have a ...
0
votes
1answer
51 views

How can I get Windows to install in Legacy (BIOS) boot on my mid-2012 MBP

I've got a 13" mid-2012 MBP running OS X 10.10.3 Yosemite. I've recently repaved it with a fresh install and now I'm getting round to Bootcamp`ing it. I've installed Windows 8.1 in EFI boot mode and ...
0
votes
2answers
112 views

MacBook Air won't start up, won't enter secure mode and repair in Disk Utility

Unfortunately some data was downloading and my Mac got stuck, so I forcefully power it off. After that, I couldn't enter the login screen, because the loading bar was stuck. I tried to enter safe ...
1
vote
1answer
17 views

Default ubuntu to boot in startup manager causes ubuntu to not work anymore

I have installed ubuntu alongside os x. I can start it by pressing the option key during startup and choose the correct disk. Everything works. Now I want to default the ubuntu disk. That works by ...
-2
votes
0answers
27 views

How to recover a Windows 7 only MacBook Pro 2010 with no bootable device?

After trying to boot my MacBook Pro 2010, I get the following message: NO BOOTABLE DEVICE -- INSERT BOOT DISK AND PRESS ANY KEY Only Windows 7 Home Premium but no Mac OS X is installed. I ...
0
votes
1answer
13 views

SATA cable problem?

I have a MacBook Pro 8,2 (15 inch, early 2011) running Yosemite (with encryption enabled). I have a strange problem that seems to relate to my boot drive (Samsung 840 Pro SSD). The system runs great ...
1
vote
1answer
31 views

Why does my Mac Pro boot to black screen with third-party video card when holding Option key?

I have a Mac Pro 2012, and recently installed a new Gigabyte GTX 760 graphics/video card. I also have Windows 7 installed on this computer on my Bootcamp partition. When I attempt to start up my ...
0
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0answers
8 views

iPhone 3G stuck on boot logo - iTunes not available

This might be easy on Win/Mac but I only have Linux, so no Itunes is available: I have an ooold iPhone 3G that runs iOS 3.1.3. It might be jailbroken, I can't remember because I haven't used it for a ...
0
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0answers
85 views

Mid 2012 15 inch MacBook Pro Yosemite 10.10.3 Grey Screen Startup Freeze w/ Bootcamp

Recently, I tried to log into a windows partition (created with Bootcamp) that I had not been on in a while. When I selected that partition from the boot options screen, it would freeze on a ...
1
vote
1answer
42 views

Gray Screen on Boot

After getting some kernel panics and failing to fix it, I decided to reinstall OS X. It now boots but gets stuck on a gray screen with the Apple logo. The odd thing is I can boot into single user ...
1
vote
2answers
32 views

2009 Macbook not booting up

I found a white plastic/ rubber 2009 Macbook in the IT Office of my school and was given permission to try to get it to be usable again. Currently, it is able to be charged with its magsafe connector ...
0
votes
1answer
20 views

iPad mini will not turn on

I can not get my iPad mini to turn on. I have tried to press the home and power button simultaneously but that doesn't work and when it is attached to the charger I hear the charge ding sound. What ...
-1
votes
0answers
16 views

Backup while bootloop

My iPhone is stuck in a bootloop, and I was wondering if there is any possibility to create a backup from my iPhone. The only way to fix the bootloop is to restore the iPhone. Is there anything I can ...
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votes
0answers
17 views

OS X Architectural/Dual-Booting Question

I have been doing a fair bit of dual booting lately, and I am trying to reason about why one must put the boot on a usb. Couldn't one technically allocate a region of internal hard-drive space, say ...
0
votes
1answer
55 views

iMac won't boot to internal drive, usb sticks - Apple hardware test extended fine

My iMac is being very odd. It won't boot using the internal hard drive. It chimes, starts the Yosemite progress bar and then changes and looks as if it is about to show me the login screen but then it ...
-1
votes
1answer
100 views

How to use Boot Camp Assistant to create a dual OS X, Ubuntu system?

I would like to use Boot Camp Assistant to partition my HD, reserving around 30 GB for Ubuntu. I would then have a dual OS X Yosemite and Ubuntu Linux system. This used to be fairly easy. Boot Camp ...
1
vote
1answer
125 views

How to boot Linux from Mac using rEFInd

I have successfully installed rEFInd on my MacBook Pro 2015 so I can boot into Linux however I cannot seem to boot into it. Here are my issues (both with Ubuntu 64x Mac CD and Kali Linux 64x USB). ...
0
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0answers
40 views

iMac 27 inch - 2013 not booting - Black Screen

My iMac 27" will not boot up. Chime does not play and the device does not power up, and shows no white screen. Only a black screen with no boot up sounds. If I hold the power button for long enough ...
0
votes
1answer
39 views

How to check which parts of a dead MacBook Pro 17" Mid 2010 work

Mac was water damaged. No start up chime. Charger shows green light dimmer than when plugged in to working Macs when plugged. Battery status button on side has no effect. Won't start in safe, target ...
3
votes
2answers
91 views

How to backup with Time Machine in Single User Mode?

Is there any way to enable Time Machine / tmutil and perform a backup from inside the Single User Mode? I have a Late '11 Radeongate-affected MBP that won't boot beyond the gray boot screen anymore, ...
0
votes
1answer
56 views

Cannot boot to OS X using rEFInd

I have installed rEFInd 0.8.7 on my 2015 13" MBP onto another partition however it does not detect OS X. Here are my disk partitions: /dev/disk0 #: TYPE NAME ...
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0answers
23 views

rEFInd keeps deleting itself

It has been some time since I have downloaded rEFInd. It was fine ever since, though later, it did start acting strange. For example, the resolution of the rEFInd window was absolutely wrong. Though ...
0
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0answers
38 views

os x boot volume

was hoping someone might be able to help me figure this out when i run the cmd "systemsetup -getstartupdisk" the output is "/Volumes/13/WINNT" My hard drive setup is a gpt schema with three ...
1
vote
1answer
422 views

Uninstall rEFInd 0.8-3.7 on Yosemite

I recently tried installing rEFInd on Yosemite using the command ./install.sh --alldrivers however it would not recognise the ubuntu 14.04 x64 for Mac disk I made and so I would like to uninstall ...
0
votes
1answer
38 views

Unable to reach Startup Manager or any boot options on OSX Leopard

I have 5 year old 17" MacBook Pro running Snow Leopard that, without any warning, is suddenly unable to locate its startup disk. I've tried every possible boot key combo, but only zapping NVRAM works, ...
2
votes
3answers
134 views

Installation of Yosemite is interrupted by a white screen at ⅓ of progress bar

The loading of the installation from a Yosemite USB installer drive is interrupted by a blank screen about ⅓ into the progress bar. The same USB drive works on another (older) MacBook Pro. The ...
0
votes
1answer
50 views

Stop sign when booting from internal ssd, boot goes fine if the ssd is in external case

sorry for the long post and my english. I have an early 2011 Macbook Pro 13 which I purchased in july 2011 and it worked fine until one week ago. Since when I bought it i replaced the stock hdd with ...
0
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0answers
47 views

Boot Android from USB on Mac. Has anyone tried it yet?

I'm interested in creating a bootable usb working on Mac, with Android x86 on it. I tried a couple of methods without any results. Well, maybe a bad one as I said in my other question (if you could be ...
0
votes
0answers
48 views

MacBook Pro keeps returning to login screen

I can login to safe boot without issue. I created a new admin account through safe boot, but upon first full login into this new account, the same behaviour as in the title showed up instantly. I ...
0
votes
1answer
31 views

4SNS TCBC - Which Mac Pro sensor is that?

Briefly my Mac Pro (4,1 Early 2009 ) stopped booting which I eventually traced to the plastic clip holding the north bridge down failing. Seems to be a common issue. Replaced the clips and now it ...
0
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0answers
25 views

How to backup, restore and erase OS X GPT using dd under Linux?

How does one backup, restore and erase OS X GPT using dd under Linux like it's shown in Archlinux Wiki using the MBR analogue: To backup the MBR: # dd if=/dev/sda of=/path/mbr-backup bs=512 count=1 ...
0
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0answers
23 views

Stop xcode opening file on startup

I cloned my hard drive onto an SSD using SuperDuper. Now when I boot using the SSD, xcode opens an obscure source code file living in /opt (always the same file). I've tried quitting xcode, restart ...
1
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0answers
29 views

MacPro: Flashing world logo, can't go into any mode, incorrect password types itself

When I turned on my mac this morning, the world logo flashed and then took ages to boot up and finally when my logon screen came up. An extremely long password started typing itself out. I deleted ...
1
vote
0answers
17 views

How do I locate and disable background PGP and Kapersky start up programs?

I had to uninstall Kapersky by deleting the application but the item still shows up on my task bar when I restart. Also, I have PGP installed on my mac, but when I telnet to port 25 of another ...
0
votes
1answer
122 views

How to replace internal HDD with SSD in Mac Mini?

I'm a complete nube to Mac (bought Mac Mini 10/Apr/15). So far I have cloned OSX from Internal HDD to USB SSD which is to become my Boot Disk. The HDD is solely to hold a recovery partition, and Data ...
1
vote
1answer
145 views

Can I stop my Macbook Pro booting into Windows automatically?

I've got my Macbook Pro (early 2015) set up with Boot Camp. Normally, when I switch it on, OS X starts. But I can press Alt/Option to get the boot menu, and select Boot Camp Windows from there. Once ...
0
votes
1answer
118 views

Mac Mini can't unmount disk in Recovery Mode

I need to wipe my Mac Mini and reinstall OS X. Booting into recovery mode (holding command+option+R), I try to erase the disk in Disk Utility but it says it cannot unmount the disk or gets stuck on ...
0
votes
0answers
95 views

Cannot boot Mac OS X Yosemite due to libJPEG.dylib

My Macbook Air 2014 does not boot to login and it freezes. This picture below is captured in verbose mode (from Command+V). I have no idea how to solve this. What I did before this happen is ...
0
votes
1answer
54 views

MacBook with a new hard drive fails to start

I have a 2009 MBP (7,1) which I recently upgraded the hard drive to a Crucial BX100SD. The hard drive was configured via. a USB to SATA cable on my desktop machine. I used a Flash install of ...
0
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0answers
59 views

No menu bar or dock on OSX 10.10 after installing rEFInd and Ubuntu

Umm, yeah. I'm stuck between a rock and a hard place. See, I needed Linux for software development, and the obvious choice (while some might argue) was Ubuntu. So I installed it as dual-boot with OSX ...
0
votes
1answer
93 views

Can't boot off of USB on Early 2006 iMac and can't get to Startup Manager

Recently, I've gone through the trouble of replacing the hard drive on my Mac with the model A1174, which the Internet says is a iMac "Core Duo" 2.0 20-Inch Early 2006. Needless to say that I do not ...