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

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How to tell from logs if a macbook was booted as “root”

I'm trying to interpret a brief log from "system.log". This is the entire log for that day/session. The scenario is my Macbook pro had a password-protected admin/login account. However, it appears ...
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17 views

Cannot initiate Windows 7 install on MacBook Air bootcamp

I use the latest Yosemite version on MacBook Air, I am trying to install Windows 7... I start bootcamp, I select the first two checkboxes [X] create windows 7 install disk [X] download support ...
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17 views

Macbook Pro (mid 2010) shutting down upon boot up

Here is my question. My macbook pro has been acting crazy for a while, shutting down unexpectedly daily. Every once in a while it will work for a day or two but eventually will start shutting down ...
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32 views
+100

Weird LCD / Boot problems on my MacBook Pro Late 2011

My Mac is a MacBook Pro Late 2011 model with the 15 inch screen. It began all with me, connecting my Nexus 5 to the Macbook. I imported some videos with iTunes (yes, iTunes popped up automatically ...
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1answer
47 views

Is it possible to tell if a Macbook hard drive was booted internally versus externally (usb, firewire, etc.)?

Is it possible to tell from system.log or other logs whether a macbook pro hard drive was booted internally or taken out and booted externally (from USB, for example) ? I'm thinking the "BSD root" or ...
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0answers
29 views

Is there any way to reattach an 'orphaned' Windows installation?

I have a Windows installation in a partition on my hard drive. The problem is, it's not showing up when I startup holding alt. I installed Windows through VirtualBox, linked to a physical partition ...
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18 views

What causes 5 pink bars on 27" iMac (2011)?

I've got a 27 inch iMac made in 2011 that displays 5 pink vertical bars on the screen. It won't boot properly. I ran the Apple Hardware Test and it came up clean. Machine Specs: Apple Subfamily: ...
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1answer
82 views

Interpreting Mac logs: was this computer accessed or just booted up normally?

UPDATE: what it looks like based on your responses is that this log shows a NORMAL boot without any need to login into an account with a password. But my computer 100% had an ADMIN ACCOUNT and ...
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13 views

Macbook Air Mid-2012 not booting

A day ago I got a message on my Mac that It's running out of space, so I ran a program named Omni disk sweeper to show me some files I can delete. I vaguely remember it showing me some temporary files ...
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27 views

Macbook pro crashed after loss of power. Fixed a few problems, but still cannot boot

We have a 2010 Macbook Pro, and a few days ago he had it off the power connection, and it lost battery power. It shut down, and when we hooked the cable back up, it would show the apple logo, and have ...
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0answers
21 views

Windows 7 partition on a 2013 iMac won't boot

The Windows 7 installer doesn't support my USB controller, so I'm unable to use my keyboard and mouse in the installer. This prevents me from using any tools on the installer to fix the boot process. ...
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1answer
32 views

Mac OS X startup manager always appears (option key inverted?)

I set up a fresh install of OS X 10.7.5 on a mid 2007's MacMini2,1 and installed my personal stuff like some components via Homebrew. After a few restarts it stopped booting automatically into my OS. ...
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0answers
14 views

Can't boot after graphic error

Specs: MBP 15-in late 2011 running Yosemite 10.10.3 Background I have an external monitor that I've been using for about a year, but recently the Thunderbolt-to-HDMI adapter I have has been giving ...
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0answers
37 views

Dual boot Linux Mint 17.1 with OS X Lion

I have a 13' MacBook (2007, hw.model: 2,1) running OS X Lion (10.7). I wish to dual-boot Linux Mint 17.1 alongside OS X. I created a Partition for Linux, and have also installed rEFIt (0.14). I have ...
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0answers
30 views

Macbook pro 2010 lost power, now wont boot

Trying to help a friend avoid the high fees at the Apple Store. He has a 2010 Macbook Pro, and a few days ago he had it off the power connection, and it lost battery power. It shut down, and when he ...
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0answers
53 views

iMac mid 2010 running slow

[Specs of the iMac, the iMac already have 8GB(Should be enough to handle Yosemite)] [1]http://www.everymac.com/systems/apple/imac/specs/imac-core-i3-3.2-21-inch-aluminum-mid-2010-specs.html#macspecs1 ...
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1answer
32 views

Macbook Air 2008 won't boot after error message asking to shut down due to low battery

Yesterday my Macbook Air (original), model: a1237 flashed an error message asking the user to shutdown due to low battery. Since it was not me, but my brother who was operating the macbook at that ...
3
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1answer
31 views

How can I try to boot a completely stuck Macbook Pro?

I have a retina MBP that according to my mum was working last time she put it under charge (with 15% left). However, as of now, I get no reaction at all after pressing the boot key. The screen stays ...
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1answer
139 views

Failed startup after 10.10. upgrade

After upgrading to 10.10.4 from 10.10.2, my Macbook Pro (late 2013) boots up to a blank screen with the mouse cursor displayed briefly every 10 seconds. Booting to safe mode and resetting the SMC or ...
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0answers
18 views

Black screen every boot

I have a new 2014 MacBook pro. Since some days, I get a black screen for every boot. So I always pressed 'cmd + option + r + p' when the booting sounds comes and it works again. Any idea how I can ...
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2answers
26 views

Dual-Boot Win7 and Apple?

First off, I have no idea what Apple calls their OS. I only use their iOS devices and I tried to avoid their computer OS as best as possible, however, I'm getting started in developing iOS apps. I ...
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1answer
69 views

2008 MacBook Air Can't Boot OS X Snow Leopard USB Install Drive

I have a 2008 MacBook Air (MB003LL/A / MacBookAir1,1 / A1237 / 2142), and I am trying to reformat it with OS X 10.6 Snow Leopard, using the retail install DVD image snowleopard_10a432_userdvd.dmg ...
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0answers
16 views

Macbook Pro not starting after multiple drops.

I've found a 'cheap' Macbook Pro mid 2012 13" laptop for sale on eBay and it would seem to be a great bargain if I were to get it. Even with all the repair costs, about half the price of a fully ...
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2answers
26 views

Unable to use gpt to restore efi partition

I accidentally deleted my efi partition, which I now know is bad news bears. I found a guide here to restore it without losing data, but even though I'm booting from usb and have unmounted all ...
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1answer
29 views

Can't Boot from Snow Leopard anymore after having installed mavericks on an external HDD

I have a Macbook Pro running Mac OS X 10.6. I wanted to test how mavericks works on my computer so I downloaded the OS and then I installed on a external USB HDD. Everything work as expected. I can ...
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0answers
65 views

Prohibitory sign on Mac startup running Yosemite

I used disk utility today on my MacBook Pro running Yosemite to create a bootable USB. I don't recall touching the hard drive of my MacBook Pro at all. After I finished the process, I went onto Google ...
3
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1answer
109 views

Booting from another mac's hard drive

My Macbook recently developed a video card problem, and I got another Macbook, both running Yosemite (though perhaps different subversions). I got my old hard drive out and connected it to my new ...
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0answers
72 views

Can't boot normal or from recovery HD

Yesterday my MacBook Pro 15" Retina stopped booting. I see the Apple logo and a progress bar which gets stuck at about 10%. What I tried so far: Booting in recovery mode - same, progress bar stuck ...
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0answers
35 views

Spotlight indexing every time system restart or boot

Every time I restart or boot my Macbook Pro 2015 running Yosemite 10.10.4 bought yesterday. Please help is this normal behavior for a newly bought Macbook Pro 2015 model to do? P.S. I don't have any ...
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2answers
45 views

What is wrong with my mac?

Suddenly today my good old MacBook pro from 2012 won't start. I get the gray screen of death. I have tried safe boot, recovery boot and Internet recovery boot and it all results in a static gray ...
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0answers
40 views

Boot stuck at Prohibitory screen

I'm using Macbook Pro 2012 running Mac OS X 10.10.3 and earlier today, I was trying to install Linux on a USB drive through Terminal. I first converted the format with this: hdiutil convert -format ...
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1answer
50 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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1answer
81 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 ...
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1answer
64 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 ...
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0answers
50 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
44 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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2answers
173 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 ...
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1answer
39 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
39 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
142 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
46 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
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1answer
66 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
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2answers
142 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 ...
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1answer
23 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 ...
0
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1answer
19 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
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1answer
54 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
12 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
117 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
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1answer
48 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 ...
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2answers
37 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 ...