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

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1answer
21 views

Mac pro early 2008 won´t boot from pendrive with yosemite install app

Mac pro 8 core early 2008 mountain lion installed. I need to clean install Yosemite. The pendrive does not show when you press alt, at the boot screen. Nevertheless it shows on configuration startup ...
0
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0answers
17 views

How to change boot picture of Windows partition?

On a MacBook with Bootcamp installed, I got three partitions: OS X 10.10 Windows 10 OS X Recovery On boot, with 'alt' key down, I get the bootloader and I can choose which partition to boot. On ...
0
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2answers
32 views

My whole HD is “Mac OS X Base System”

my entire HD is now "Mac OS X Base System": ps: Mac OS X Base System is Disk0s2 I cant delete this partition to install Mac OS X; I already try the terminal, but message reply "you cannot erase ...
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0answers
5 views

Sound not working on new Windows 8.1 install (Early 2011 MacBook Pro)

Background: My CD/DVD drive is broken so I had to install Windows from a USB drive. I used a trick that involved changing entries in an info.plist file belonging to Boot Camp Assistant which allowed ...
0
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2answers
32 views

Mac book doesn't boot

My Mac book pro 13.3 inch retina display August 2014, did not boot after a normal shut down. It gave sound on power on but after stays grey. I tried all options available on net CMD+C, C, SHIFT+CMD+V ...
1
vote
1answer
28 views

Startup disk not correctly identified?

I have a Mid-2010 4 core MacPro. I mainly run 10.6.8, as I have a large software investment I'm not ready to abandon. As part of my migration to the present day OS, I have multiple startup drives, 2 ...
0
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1answer
49 views

My MacBook Pro, gets stuck at boot screen and the graphics look weird

I have a 2011 MacBook Pro i7 and I have upgraded the memory to 8 GB and the HD to an SSD 500GB. The other day I had it running for 3 days non-stop and when I tried to use it it was frozen. I reset it ...
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0answers
11 views

New drive won't boot internally

So I purchased a new 2TB drive (Samsung model #ST2000LM003) for my 13" MacBook Pro. No issues with the old one, just getting close to capacity. I connected it with a SATA/USB adapter, formatted it, ...
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0answers
15 views

System restore: an error occurred while preparing the installation

I bought a used mac mini on ebay, the guy who sent it to me completely formatted it, leaving only recovery partition. Now when I boot the recover, I see 4 options, one of them is reinstall the OS. ...
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0answers
10 views

MBA with Syslinux on USB

I'm trying to boot a Linux kernel built with Buildroot from USB on my Yosemite Macbook Air. I have followed the first steps in Failed To Install syslinux on USBDRIVE with Mac OS X, i.e. - DiskUtility ...
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0answers
32 views

iMac only works in safe mode and cursor showing weird black lines (pic attached)

Have a Mid 2010 model computer IMac 21.5 that is acting up. Won't work in normal start up, will start in safe mode, but cursor shows strange black lines (see attached photo). These lines follow the ...
2
votes
1answer
83 views

Is a bootable USB drive with Yosemite OK for different macs?

This might be obvious, but probably worth a question: I took my MBP (Early 2011 15"), downloaded Yosemite and created a bootable USB device from which I later clean-installed the OS. Can I use this ...
0
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1answer
19 views

Unable to properly boot Power Mac G5 running Debian without a screen connected

I’ve got Power Mac G5 running Debian 6 in headless mode as a media/home server. When booting it without an attached screen, the fans ramp up from the idle speed to maximum over a couple of minutes. ...
2
votes
2answers
112 views

Old Mac OS X, cannot get admin access, boot safe or single-user mode, nor reinstall

I have inherited an old Mac OS X 10.5.8 + original install DVD. Model: Power Mac G4 Identifier: PowerMac3,6 Processor: PowerPC G4 (3.2) DVD: Mac OS X Leopard Install DVD Version 10.5 I'm trying to ...
1
vote
0answers
21 views

MacBook Air boots into wrong partition

I have two partitions created, one called "Yosemite" and the other is my default 10.6.8 partition "Macintosh HD". I successfully installed Yosemite onto the "Yosemite" partition, but when I try and ...
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0answers
68 views

MacBook Pro won’t boot up after putting the bottom case screws back in place

I'm kind new in this world of Apple, and I have an Intel-based Mac that suddenly had the hard drive fail. So I make a Mac OS X USB flash drive, and realize that the old hard drive died since “Disk ...
-1
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1answer
35 views

Key to boot from USB on Ubuntu MacBook Air

Recently, I removed OS X from my MacBook Air and installed Ubuntu 14.04 on it. I have been trying to install Debian during last week, but I don't have idea what's the key to enter into 'BIOS boot ...
0
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1answer
29 views

2007 iMac Blured Screen of Death

I'm running OS X 10.10.1 on a 2007 iMac (Intel based) I have tried to boot into the recovery HD, but it just continues with the boot as if I have never pressed cmd-r. When it does finally boot; it ...
0
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2answers
158 views

Create a bootable USB with Windows installer for Yosemite?

I'm having trouble creating a bootable USB for my mac. I have an iMac, and I'm wanting to install a copy of Windows Server 2008 x86 onto it. I've tried BootCamp, but I'm getting errors when selecting ...
0
votes
1answer
36 views

Why don't Windows 7 bootable sticks start on MacBook?

On Macbook air ~2014 when I created the bootcamp partition and the Windows bootable stick, it made a stick that can start an install just fine on Windows computers. Why doesn't that bootable stick ...
0
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2answers
62 views

Can I boot OS X or Windows Boot Camp from an external USB Type-C drive?

Currently I boot OS X and Windows Boot Camp from an external Thunderbolt HDD. LaCie just announced a new external USB-C (USB 3.1) hard drive enclosure. Will I be able to boot OS X or Windows Boot Camp ...
1
vote
1answer
52 views

Fix formatted GPT in SSD

I accidentally formatted my SSD's GPT while formatting a USB in Linux's gparted. Now, when running gpt in Mac's command line, this is how my SSD looks like: My-MacBook-Pro:~ user$ sudo gpt -r show ...
0
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1answer
146 views

MacBook Pro refuses to boot/recover, hangs at “white screen”

I am somewhat new to caring for Macs, but one has been left in my care and I have not been able to restore it to working order yet. Here are the symptoms: The MacBook Pro would hang with a "white ...
2
votes
2answers
119 views

Stop sign at boot - new SSD

I've got a mid 2012 MBP 13" in which I inserted a brand new MX100 in the place of the old HDD. I've put the old HDD in a case in the superdrive place and tried to install 10.10 but the install failed. ...
2
votes
1answer
24 views

Can I make a bootable drive for mid 2010 MBP with a Windows computer?

I have a mid 2010 Macbook Pro running Yosemite that I foolishly did a reset on while it was connected to an external monitor that was designated as default in settings And connected to a USB keyboard ...
0
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0answers
37 views

Power Mac G5 doesn't boot/black screen

I have a Power Mac G5 (Model No: A1047 EMC 1969C). My problem is that it doesn't properly boot anymore when powered up. When I'll press the power button, the white LED next to the button will ...
2
votes
0answers
44 views

Broke Boot Camp while trying to get a triple boot

I'm running Yosemite, up-to-date on a mid-2012 MacBook Pro. I removed the optical drive, moved my internal HDD to its location and placed a new SSD in the original HDD's location. This has been great ...
2
votes
1answer
349 views

iPad won't turn on after a complete battery drain

I forgot to plug in my iPad after the critical battery warning and it went some minutes following the warning. I was not worried because same thing had happened a few times before and iPad was ...
1
vote
3answers
112 views

Is it possible to boot from an encrypted external hard drive?

If I have an external hard drive with a bootable cloned backup (via SuperDuper) - if I encrypt it with the Finder will I still be able to boot from it if necessary? Are there any solutions to enable ...
0
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0answers
38 views

Internal HDD works with pc but not mac. MBP

I had bootcamped win 7 on my mac a while back until one fateful night I was hit with a bluescreen. When I attempted to restart I received a no drive recognized error. Since then I have done everything ...
1
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0answers
26 views

Mac Pro 2008 Refuses to Boot

My Mac Pro 3, 1 began rebooting randomly one day and the next it wouldn't come back on. Pushing the power button results in a fan clicking in to life for half a second and then all power is lost. The ...
1
vote
1answer
59 views

Flashing question mark, low hard drive space

When I booted my Mac last night I got a flashing folder against a gray background. The computer started fine this morning, but when I closed the lid and opened it up again I had to reboot, and now ...
1
vote
0answers
35 views

How to Hide All users from fresh boot With FileVault 2

With System preferences>Users & Groups> Login options> display login window as "Name and Password" normally you need to type out the user name and password to sign in. With FileVault2, when ...
0
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0answers
51 views

Installing Windows on an Early 2011 MBP w/ swapped out SSD… major roadblocks

My problem started a few days ago when after installing my brand new 250gb evo ssd I decided having a windows partition would be nice. I had previously had this setup before having the ssd whenever I ...
4
votes
4answers
119 views

Mac Won't Boot. Help needed

I use top-notch MBPRO15 Late 2011 with the latest OSX and all the recent updates installed. I had booting problems before which I managed to solve through command+option+P+R. I'm not sure what exactly ...
0
votes
2answers
226 views

“You restarted/Computer restarted because of a problem” on wakeup, Evernote?

For the last few days I've been getting scared because of these messages that appear very frequently on wakeup, and almost always when I wakeup after a long duration. Sometimes it says "you restarted ...
0
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0answers
169 views

Bootcamp fail stuck at no bootable device (hold option not working)

I've been trying to find an answer to my problem all day with no luck. I tried installing windows 7 via bootcamp this morning. I accidentally created the partition before creating a bootable usb ...
0
votes
1answer
88 views

Folder with Question Mark On Startup, Don't Know the Firmware Password

So my buddy's macbook one day just booted up with a folder with a question mark in it. Its an old laptop from work, which he doesn't work at anymore. I've been trying to help him out, but I've ...
1
vote
1answer
726 views

No bootable device after failed Windows 7 installation via Bootcamp

While trying to install Windows 7 via Bootcamp on my MBP Retina today I really messed up. After getting into the drive selection in the Windows installation utility I deleted the other partitions (3 ...
0
votes
1answer
173 views

Boot Camp OS startup selection not available with Windows Alt

I am using iMac (Yosemite) and Logitech K800 wireless keyboard http://www.logitech.com/en-us/product/wireless-illuminated-keyboard-k800 (specifically the Finnish version of it). When I press Alt on ...
2
votes
1answer
40 views

MacBook Pro Mid 2012 startup chime from right speaker only

After installing a ssd into my Macbook pro mid 2012 (not retina), i noticed that the startup chime is coming only from the right speaker. (I am not sure if it was always like that or if its because of ...
0
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0answers
19 views

iPhone 5c Reset Not Progressing While Reseting

I recently got my son this 5c, when we went to restore it, the progress bar would not load. At first I thought it was a graphical problem, so I left it run for a few hours but it seems to be stuck. ...
1
vote
1answer
50 views

MacBook boots automatically when opening lid. Feature or problem?

When my 13" Retina MacBook running Yosemite is powered off and I open the lid, it immediately starts booting up... without pressing the power button. Is this a new feature (maybe part of Yosemite) or ...
0
votes
2answers
138 views

Mouse and Keyboard on MacBook Air mid 2009 don't work partially

My MacBook Air mid 2009 worked for 3 months without any problems on Yosemite. Two days ago the built in mouse stopped working along with the built-in keyboard. Right after it woke up from sleep mode ...
0
votes
1answer
94 views

Does Windows, running on latest Apple computers, see boot disk partitioned as MBR or GPT?

From my understanding, the newest apple computers boot Windows in EFI mode. Traditionally, Windows has seen the boot disk as an MBR partitioned disk. In fact, the boot disk (i.e. /dev/disk0) has aways ...
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0answers
27 views

Trying to boot brand new Mini from SuperDuper Backup - circle with line through it

Our Mac Mini went belly up, so I just got a brand new one. I had a nightly scheduled super duper backup to an external drive, which works fine on other Mac's (i.e. I can boot it up and run) On the ...
1
vote
2answers
164 views

iMac stuck at white screen - graphics issue?

I have a mid-2007 iMac that can't boot into OS X Lion unless it's in safe mode. When I turn it on, the Apple logo appears, then the loading spinner, then a white screen with no cursor. What makes me ...
0
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0answers
145 views

Unable to Open /var/db/BootCaches/PreheatedUser/Merged.playlist

Running Mavericks and Disc Utility and fsck report no errors. Safe Boot reports Unable to open /var/db/BootCaches/PreheatedUser/Merged.playlist. Found a tutorial (or three) recommending to enter ...
0
votes
1answer
37 views

Can't change startup disk iMac

Here is my situation: I've only the mouse paired with my iMac because I rent the keyboard to a friend. Unfortunately the startup disk is set to a fallacious Windows partition that don't want to boot. ...
0
votes
2answers
64 views

Macbook Air strange boot-up

I've searched before asking but couldn't find any related question with the problem that I'm facing. I have a new Macbook Air (1 month) with Yosemite 10.10.1 that from the beginning is having some ...