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

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2
votes
0answers
796 views

MacBook Pro will boot only after a SMC reset

I replaced the hard drive in my MacBook Pro (mid-2010) with a SSD one. I installed Mac OS X 10.9. At first the installer wasn't able to find the new SSD drive, because of a error: "SerialATAPI device ...
0
votes
0answers
207 views

Macbook Pro doesn't boot with replacement battery. 15 inch late 2011

I bought this replacement battery for my 15 inch Macbook Pro late 2011: http://www.amazon.ca/dp/B00OD7OHLY/ref=sr_ph?ie=UTF8&qid=1419964742&sr=1&keywords=macbook+pro+late+2011+battery ...
10
votes
4answers
40k views

How do I make a bootable USB flash drive for a MacBook Air?

Does anyone have a Terminal command-line recipe for making a new bootable USB flash drive for one of the new MacBook Air's? Is there a way to dd copy the USB boot device that comes in the box and ...
1
vote
4answers
20k views

Lion hangs on boot with empty progress bar and then switches off

Today as I was working on my MacBook Pro, it became incredibly slow and almost impossible to work with. I spent five minutes trying to restart it from the system menu, and eventually I did. It took ...
1
vote
2answers
353 views

How to install Windows 8 on an early 2006 MacBook?

I have recently obtained a MacBook 1,1 from my older sister and it happens to be quite old. I have attempted to revive it with boot camp but my windows installation is stored on a USB drive instead of ...
1
vote
0answers
11 views

securing boot process against port access but not full physical access

Is it possible to secure a Mac Mini (2014) for use in an scenario where users have access to the ports but not full physical access to the computer's internals? I need to be able to disable cd boot, ...
0
votes
0answers
85 views

BootcacheControl.playlist not found, MacBook does not boot anymore

Booting a MacBook with Snow Leopard installed will suddenly stop with the message: Unable to open /var/db/BootCache.playlist: 2 No such file or directory Booting in single-user mode, I can see ...
1
vote
3answers
379 views

Boot on USB from a previous version of OSX

I own a mid-2013 Macbook Air running Mavericks and wish to boot on a USB stick containing a bootable version of DiskWarrior. The problem is DiskWarrior wasn't updated for quite some time and, though ...
1
vote
2answers
173 views

OS X takes long to boot after starting rEFInd once

I have an SSD in my MacBook (Pro 9,2; encrypted), and until recently, the apple icon appeared almost immediately after pressing the power button. Soon after that I would be able to unlock the disk ...
2
votes
0answers
63 views

Can I keep my Boot Camp partition when moving to a larger hard drive?

I just bought a 512 GB hard drive to replace my 250 GB hard drive, which currently has a Boot Camp partition (pretty vanilla, just running a standard Windows 7 install). I was planning to just clone ...
0
votes
0answers
248 views

Drive name red in Disk Utility: Core Storage Drive offline. How to bring back?

Yesterday, my mac wouldn't boot up. When I restarted, I could get the whole way to the User login screen. No matter what user I chose, the boot bar would get about 1/3 way finished and I would get ...
0
votes
1answer
256 views

How do I change permissions of folders on a hard drive from a booted USB drive

I am trying to save my files on my Hard Drive that has a crashed OS. I created a Bootable USB with Ubuntu and successfully booted. I can see my folders, but I can't actually open them because I don't ...
2
votes
1answer
428 views

How can I clear the kernel extension caches while using FileVault 2?

I have the same problem as this user, Air + Lion : plug in USB, keyboard/pad stop working , where the built-in keyboard and trackpad on my MacBook Pro stop working (and drop out of the USB devices ...
0
votes
2answers
24 views

Mac runs same vm. Cannot exit

I have inherited some Mac-based machine, but when I power it on - virtual machine with Windows XP starts. I cannot figure, how to exit this mode or restore Mac to factory defaults. I tried booting ...
1
vote
1answer
96 views

What font is used to print a verbose mode boot?

When booting OS X in verbose mode (⌘V), the log is printed on screen. It seems different to the kernel font, but it might just be a smaller version of it. inverted screenshot Yosemite 10.10.1 ...
0
votes
0answers
17 views

Can I list netboot servers using bless?

At work I'm constantly checking people's computers and needing to netboot to different installers and OS'. Is there a way for me to use the 'bless -netboot' command and list the servers that are ...
0
votes
1answer
123 views

Macbook White Mid 2007 will not boot even on Mac OS X Lion bootup USB

I see the gray screen and nothing shows up for minutes on the screen not even the blinking question marked folder. Does anyone know how to get it to boot as I have a new hard drive I installed and ...
0
votes
1answer
1k views

Yosemite freeze at boot - no safe boot + I/O error

Yesterday everything was fine but today my macbook freeze/stuck during the boot. I've done this: check + repair permission (nothing changed) check + repair disk (nothing changed) tried safemode ...
6
votes
4answers
22k views

How do I make my 1.5 GHz PowerBook G4 boot from a USB stick?

I actually want to boot Linux but since that is not working I'm thinking some one might know on the Apple end. If there's a way to boot Mac from a USB stick, then booting another operating system ...
6
votes
4answers
37k views

Repair disk from single user mode (fsck fails)

Earlier today my 2009 iMac emitted I/O errors trying to copy files. So I ran disk utility, verify disk to see if anything was amiss. It was. But as it's my startup disk I couldn't repair it, so I ...
3
votes
3answers
44k views

Gray screen after installing Yosemite

Yesterday I updated my 2012 MacBook Air to Yosemite. Everything was good, everything working great, but, at the end of the night, my laptop’s battery was low so I decided to shut it down, instead of ...
0
votes
1answer
1k views

How to exit Recovery Mode on jailbroken iPhone

What I've searched so far says that my iPhone had goes to Recovery-Mode (Am I right?) because it stuck on Apple Logo and won't start. What I've tried so far : What is Soft DFU mode, and how do I ...
2
votes
0answers
60 views

MacBook Internet Recovery “?” Folder

With my 2012 MacBook Pro, I'm trying to reinstall Mac OS X (any version that will work) onto a new Solid State Drive that replaced a broken one. I can get to the Internet Recovery screen just fine ...
1
vote
1answer
175 views

Firmware settings

I want to open the firmware settings. I have a Mac book Pro end 2011 and yosemite. When i press Option+Cmd+O+F while booting nothing happens, it continues to boot. What do i have to do? Background: ...
2
votes
1answer
40 views

Is there any way to not boot Finder at startup?

Is there a way in OS X to change the desktop from Finder to something else (for example KDE from Fink)? Basically, I want Finder to not boot up at startup, so no icons, no dock (but keep the menu ...
0
votes
1answer
41 views

Hard drive renamed after restart, apps can't see it

I shutdown my computer when I left work and when I got home turned it back on. When it booted back up the second drive (in the dvd drive bay) had a strange name like A[]\tr/sj or something like that. ...
6
votes
4answers
19k views

Boot hangs on grey screen (even when booting from USB drive with fresh OS X install)

My MacBook Pro 15" Late 2011 (MacBookPro8,2) with AMD Radeon 6770M exhibited display corruption and associated system crashes/resets over a period of two weeks before it entirely failed to boot. The ...
2
votes
3answers
9k views

Boot from USB on MacBook 1.1 (early 2007)

I’m trying to install Windows 8 from USB on my MacBook 1.1 (early 2007). I have tried booting using rEFIt (on 10.6): Partition my USB key as MBR: the Windows 8 logo fish stays stuck forever. ...
0
votes
1answer
387 views

Yosemite Grey Screen with 3d Party SSD not a trim issue

I have a MacBook 7,1 which i recently installed a PNY 250 SSD and added some RAM. The laptop was running awesome with OSX 10.6.8, lightning fast. Then I installed Yosemite. There was a bit of hang ...
0
votes
0answers
121 views

Mac with newer OS X installed no longer boots previous version

First of all I am aware of the fact, that Macs usually refuse to boot or install older version of OS X than they were shipped with. But this is not the case here. The long story: A few months ago I ...
2
votes
3answers
5k views

Panic on boot, need to use single user mode (was: need to rebuild kext cache)

I'm getting this at every boot on one Mac: With some searching and asking around I've found that I can get a successful boot if I boot into single-user mode, mount / as read/write, and then do ...
0
votes
0answers
37 views

2011 Macbook pro - i7 750gb screen flicker

My mac did not boot after trying everything. I was planning to replace HDD but before that I took the HDD out and made it external and I could read everything without any issues. So thought its not ...
5
votes
4answers
3k views

Is it possible to install an old version of Mac OS on a new Mac?

I know that Apple doesn't want me to run a version of Mac OS older than the one my Mac came with, but is there a way around this? For example: if I buy a new Retina MacBook Pro, is there a way to run ...
0
votes
1answer
49 views

Can the MacBook boot from a second HDD

If I was to install a SSD in my MacBook Pro (Mid 12) where currently the Superdrive is attached and continue to use the preinstalled HDD for other files, can I run OSX from that new drive? Or in ...
18
votes
5answers
94k views

How to install OSX Mavericks in VirtualBox

I have been trying to use Hackboot to install OSX Mavericks in VirtualBox, and using an ISO image created by following the steps at How to create bootable ISO for OS X Mavericks The steps I have ...
0
votes
2answers
441 views

MacBook Pro stuck on white screen after dual-boot adjustments

I wanted to have dual-boot setup on my MacBook Pro. So after searching for a bit, I found a couple of sites that offered a step-by-step explanation on how to do it using rEFInd. I successfully ...
0
votes
0answers
183 views

Mac mini early 2014: Enter startup manager using a windows (wireless USB) keyboard

Cannot enter startup manager or perform any other startup action on my mac mini. I tried installing Windows 10 (Tech Preview) alongside Yosemite. The mac mini automatically starts into Windows, ...
4
votes
2answers
216 views

Mac boot menu not showing up with different keyboards

I have a Macbook White from 2010. I have been using it for a while and everything works except the internal keyboard which is broken because of a tea spill. An external PC-keyboard (USB) is attached ...
0
votes
0answers
291 views

How to disable OS X installer on boot?

TL;DR Have a MacBook Pro with (probably) bad GPU. Tried to install Yosemite OS X - after reboot, it hangs up on grey screen. Is there a way to disable Yosemite OS X (or any other) installer on boot ...
0
votes
0answers
91 views

MacBook Pro 15" Reoccuring Freezing Problem

I have a MacBook Pro 15" that has been having a reoccurring issue. It gradually starts to slow down while using it, starts freezing, and then will get stuck on the Apple logo loading screen after ...
0
votes
1answer
226 views

GRUB overwritten Refind/Mac bootloader - Unable to boot

Getting desperate here, need some help background: I have a late 2012 imac, running OS X 10.10 Also i had Xubuntu & OpenSuse running as secondary OSs I was using refind & everything was ...
0
votes
1answer
29 views

How to change boot login

How Do I change the user for the Boot login? I had changed my username recently and have deleted the temporary admin that has been made to change my username, but the Boot Login has somehow changed to ...
1
vote
1answer
4k views

Mac boots into log on screen quickly but takes long time to log into account

I just replaced the stock OEM hard drive on my 2010 macbook pro 15 inch with a Samsung 840 Pro SSD 256GB and installed Yosemite on it from scratch with USB (the first time i am using Yosemite). Now ...
0
votes
1answer
415 views

Booting from Windows USB Key Overwrote EFI - Mac No Longer Boots

I'm using a macbook pro running Yosemite. I was trying to create installation media to install linux on an SD card, and I used a USB key that had a bootable windows installation on it. I thought I had ...
1
vote
0answers
3k views

rEFIt boot changed after update to Yosemite

I was using rEFIt to work with Ubuntu with my Mac. After the upgrade to Yosemite I had a problem with rEFIt. I found the following solution on ubuntuforums.org but rEFIt still didn't work: cd ...
-1
votes
1answer
79 views

Can I temporarly disable automatic login while booting?

Is there a key to press in order to disable automatic login for that single boot? I do not want to disable automatic login entirely, I wonder if there is a key combination that, if you keep it ...
1
vote
0answers
104 views

I cant see my bootable 10.9.3 usb drive on mac

I downloaded 10.9.3 dmg file (aprox. 5gb) from torrent site. Than I installed trasmac to my other windows computer and created a bootable usb with it. But when I plug this usb to my mac I could not ...
1
vote
1answer
734 views

Unable to boot from USB Mac

I am running OS X 10.9.2 on a late 2011 Macbook Pro. I created a Windows 7 install usb using bootcamp successfully but the startup screen is not recognizing the usb on reboot. Please help. Note: I ...
0
votes
1answer
381 views

Booting an iMac using a Macbook Pro's internal disk

Suppose I have an iMac and a Macbook Pro. My Macbook Pro is my primary workstation, and when I switch to the iMac I would like my environment to be exactly the same in order to facilitate switching ...
2
votes
0answers
2k views

iPad 1 won't boot, flashes apple logo

I have recently acquired a refurbished iPad 1 WiFi + 3G. Straight out of the box it wouldn't boot up at all. No logo, or anything. Upon plugging the device into the AC power charger, the Apple logo ...