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

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4k 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 ...
3
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0answers
62k views

Freeze on boot after installing Yosemite

Sorry for the writing style but I am typing from my smartphone now. My MacBook pro on Mavericks worked like a charm but crazy as I am I decided to install Yosemite without any backup as I am lacking ...
3
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0answers
424 views

How to 'startx' from Single User Mode?

I usually run dwm inside Xquartz on OS X Mountain Lion 10.8. But is there a way to boot into Safe Mode (or a console), then startx or xinit, skipping Aqua? I'd like to boot directly into X11.
2
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0answers
43 views

Bootcamp: How do you reboot from Windows to Windows via script in OSX El Capitan?

I'm asking this because I think it would be incredibly useful to myself and other Bootcamp users. I currently have my default boot drive set to restart to my Mac partition and already have a script ...
2
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0answers
51 views

Unable to Boot MacBook using any means after attempted Fedora Install

Wondering if anyone has any last ditch efforts I can try here to salvage my macbook! I recently attempted to install fedora to dual boot on my Late 2011 Macbook Pro, the install crashed, the ...
2
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0answers
114 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 ...
2
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0answers
361 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
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0answers
171 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 ...
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0answers
264 views

How to make a bootable (encrypted) copy in an external drive from a FileVault 2 encrypted boot partition

I configured my MacbookPro (Retina) as follows: /dev/disk0 (GUID partition scheme) EFI 200 MiB Apple CoreStorage 128 GiB <- FileVault 2 encrypted Apple Boot 650 MiB <- ...
2
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0answers
1k views

How to bless a partition using a custom EFI-boot file with non-conforming directory structures and/or file names?

Is there a guide on how to bless a partition for booting, one that doesn't have the default /System/Library/CoreServices/boot.efi structure? For example, I installed GRUB on the default EFI System ...
2
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0answers
495 views

Windows 7 on Macbook Air 1,1 *without* Boot Camp

I'm trying to install Windows 7 on an early 2008 (1,1) Apple Macbook air, on which OS X is not present. The machine is not able to boot directly the win 7 iso, supposedly because it lacks some support ...
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0answers
218 views

Startup Screen Flashes Pink

During boot, I see the gray screen with the Apple logo, then the entire screen flashes pink for a couple seconds before boot continues normally. Is this a problem/symptom of something? MacBook Pro ...
2
votes
0answers
433 views

Windows not booting off external disc drive

I'm trying to install windows xp on Lion. This is a little bit complicated, but I was using this tutorial. I got to step 6, which is booting from the Windows XP disc. But it says "no bootable medium ...
2
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0answers
788 views

Locked Hard Drive

For some reason a recent reboot resulted in a startup screen with a circle with a slash icon instead of the regular Apple icon. What I tried: Using internet Recovery I used disk utility to fix ...
2
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0answers
1k 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 ...
2
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0answers
657 views

Unable to boot into anything but single user mode

Last night I upgraded from Mountain Lion to Mavericks (mid 2009 macbook pro). Everything went smoothly during the upgrade, but it resulted in an extremely long and unstable boot process. If I was ...
2
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0answers
230 views

Boot Linux from USB drive

I've installed Fedora on a new SATA SSD drive for my MacBook Pro, and when installed into the laptop, it boots perfectly (and runs wonderfully!). However, I want to boot from it externally until I'm ...
2
votes
0answers
3k views

MacBook does not list my bootable USB stick in the boot menu

I made a bootable usb stick with OSX Lion. When starting up my MacMini (which has OSX Mountain Lion installed) while holding option, the USB stick is listed and I can boot from it. But I want to use ...
2
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0answers
239 views

Boot into Legacy HD option rEFIt

I just synced my rEFIt partition tool and now I get an option to boot from legacy HD when at the moment the only bootable disk is that cotaining Mac OS X. Has anyone got any idea of how I can get rid ...
2
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0answers
732 views

Windows will not boot after a restart of my Mac Pro, only after a cold shutdown and startup

I am currently experiencing a very strange issue regarding booting into Windows 7 64-bit (installed on its own 1TB HDD). If I restart my Mac Pro, hold down the option key, and select my Windows ...
1
vote
0answers
52 views

refind : No bootable device (Mac and linux)

I just make dual boot on my macbook pro with linux fedora. when I enter linux on refind menu, it says "no bootable device -- insert boot disk and press any key". I know this question has been ...
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0answers
45 views

Cannot boot into OS X after partitoning

I have installed Ubuntu on a Mac Mini, everything works great. I'm able to switch back and forth without any problems. After that, I used GParted in Ubuntu to resize the OS X partition. I then create ...
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0answers
62 views

Boot Windows from USB with EFI password

I've created an USB with Windows 10 from where I can boot: Restart pressing option. Select USB EFI partition. Windows starts. When EFI password is active it will be asked when booting pressing the ...
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0answers
26 views

Macbook Air - No Apple logo but still boots

I have been looking all day for an answer to this so I thought I would pick your brains :) Macbook Air 4,1 (Mid 2011) 11 inch, i5, 2gb RAM. After pressing the power button, I hear the Apple "chime". ...
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0answers
89 views

Fusion drive suddenly not bootable: “Too few free segments”, made read-only

I've dealt with a lot of disk issues over the years admining lots of different OSs, but this one is new to me... help/ideas appreciated before I give up and restore! Woke up this morning to my iMac (...
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0answers
192 views

Creating a bootable Windows USB drive when Bootcamp is already installed

I just upgraded to El Capitan, and am now having issues booting directly into Windows. I need a bootable Windows USB stick to repair my bootcamp partition, but I'm having a difficult time making that ...
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0answers
51 views

Bootable SD Card doesn't appear at Startup Manager

I have a bootable SD Card with Windows 10 installed, and it works fine in the most of macbook pro I have tested, but there is one in which when I press alt / option key, the SD Card doesn't appears ...
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0answers
41 views

I can't boot my iMac to Mac OS X

I have Windows (Boot Camp) installed. So I ran out of storage and thought about partitioning my Mac's part of drive. I partitioned my Mac's drive and set Windows to boot by default. Once I lost ...
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0answers
26 views

Is the boot menu (ALT on boot) black now?

I have a new MacBook Pro (mid 2015). When I boot, I saw that now the apple is white on a black background. Okay maybe Apple has updated this design. However, I find very odd the boot menu (the one ...
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0answers
272 views

10.11 Prohibitory Symbol after Reimage or Kernel Panic on NetBoot

I apologize if this is convoluted. I've tried so many different ways of getting this to work that I'm getting them all mixed up. With the launch of Mac OS 10.11 El Capitan, we've encountered some ...
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0answers
57 views

Lost a Fusion drive boot disk

i can see my Fusion Drive disks (ssd+hdd) in Terminal: But i lost it in the boot and cant boot MAC OS. (please see album with photos on http://imgur.com/a/N5zY2 ) I cant repair my system, when i ...
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0answers
94 views

Trying to run Windows from USB on Mac, says “No bootable device found”

I am trying to run Windows 10 on my Macbook Air. I originally wanted to upgrade my SSD so that I would have enough space for a windows partition. Unfortunately, I can't do that with my model (I have a ...
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0answers
32 views

Boot iMac from Macbook

The new MacBooks are the best But their processors are pretty anemic. Not a big deal when I'm out and about, but not great for serious work. What I'd like to do: Get an iMac with decent specs, ...
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0answers
28 views

Early 2011 15" Macbook Pro running Windows 7, front USB port misbehaves

I have an early 2011 15" MacBook Pro on which I primarily use Bootcamp & Windows 7. The front USB port works well using OSX but under Windows, it thinks any storage device lugged into it is an ...
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0answers
224 views

How to boot OS X with network devices in promiscuous mode?

As OSX no longer allows ifconfig en0 promisc and sees that as a bad value and does not set the device flag, what other options are there? I'd like to be able to boot and have both my Airport/WiFi as ...
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0answers
1k 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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0answers
145 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
27 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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0answers
98 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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vote
0answers
43 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 ...
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0answers
40 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 server,...
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0answers
360 views

Need to clean install Yosemite without knowing or resetting password

I have a laptop that I would like to get in working order. There are 2 main issues: I forgot the password. When I boot the laptop, I am seeing the flashing folder with a question mark which ...
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0answers
214 views

Mac Mini and Wide (21:9) Monitor / Display Port Issue

When I boot up my Mac Mini after moving it from my office at work where it worked with my wide (21:9) monitor to my house, when I boot it the display does not show up on the monitor anymore. Waits ...
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0answers
777 views

Apple Macbook MB467LL/A gray screen no apple logo HELP please

New to the site, and I am having a little problem. My wife's Macbook has me stumped. It was working fine, (running Mavericks) and then just powered off. On powering back on we are now treated to a ...
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0answers
246 views

MacBook Pro hangs up at the grey Apple login screen

After it would hang up, the keyboard lights would stay lit indefinitely. I've tried resetting the SMC and NVRAM but they didn't work. I did a verbose startup and this was the screenshot before my ...
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0answers
3k views

MBP 15 2014 unexpectedly shuts down after startup/login

MacBook Pro 15, Mid 2014, Yosemite + Windows 7 (Bootcamp) This problem started today after waking up. Yesterday night I had no problem whatsoever with my computer. After turning it on and logging in ...
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0answers
57 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
354 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 ...
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vote
0answers
96 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 ...
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vote
0answers
587 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 ...