An OS X feature that hides a Recovery HD on Macs to facilitate maintenance, recovery and reinstallation if the OS becomes corrupt. Topic of recovery-mode-ios, data-recovery or file-recovery are unrelated to the recovery category here.

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how do I see for existing volumes if the FileVault recovery key is stored in iCloud

I own several Macs (also for family members) and the first thing I do is turn on FileVault. How do I check if the recovery key is not stored in iCloud (for existing volumes, not new ones)? If you'...
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43 views

No Macintosh HD

I was attempting to use an Internet dongle but it wasn't working so I followed some steps online to try and get it to work. I reinstalled El Capitan on to my MacBook but when I returned to recovery ...
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1answer
39 views

Today I've updated a Mac mini and it won't boot even to recovery mode

Monitor is switching between being black and turned off. The same when starting with Cmd-R. I clicked update, rebooted computer, and this happened. What can I do? I was updating to newest El Captain, ...
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1answer
82 views

How to Recover Data when OSX cannot?

There is only one .tex file which I would like to restore in my system. My system is El-Capitan 10.11.5 in Macbook Air 2013-mid. Problems I have Time Machine backup but it is 3 days old and does ...
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1answer
36 views

How to Rescue OS X without Visible Startup Disc?

I need to delete refind but I cannot do it because I bypass it, since I cannot see visible startup disc. I stopped partition process where I tried to erase Linux partition because of infinite time in ...
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1answer
42 views

MacBook Air 2015 is a bit slow booting up

I got my Mac restored completely yesterday by some guy at the Apple Store. It runs the latest version of El Capitan now, however, when I turn it on, it takes a little longer to load the OS than it did ...
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1answer
61 views

CoreStorage Volume not detected

I had a Linux/OS X 10.11 dual boot configuration and wanted to remove the Linux partitions. I managed to remove them without any issue but when trying to merge the free space with the OS X partition ...
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2answers
24 views

Using internet recovery to install Mac OS X on SSHD, then replace internal?

I have a USB 3.0 to Sata cable of which I will plug into a 500gb SSHD. I will try to install a completely new Mac OS X on it using the Internet Recovery option. Then transfer all of my files via USB 3....
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33 views

Cannot boot into offline recovery partition in El capitan

I removed Boot Camp, then every time I use CommandR my Macbook Air starts Internet recovery. The weird thing is that the recovery partition is still there. Note my Internet connection is only 512kb/...
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46 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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35 views

OSX installation from recovery

I am windows user and recently I switched to OSX with a Macbook Pro Mid 2015. I tried to re-install OSX from recovery without any reason , it was working fine and properly....unfortunately I erased ...
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1answer
76 views

How to reinstall OS X when Recovery isn't working?

My wife has a MacBook Pro that she bought new in 2012. In 2013/14 it had an issue with the system files and when she took it into the Genius bar at Apple they reinstalled the OS (wiping all personal ...
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46 views

How to boot into recovery mode without cmd-r?

I am trying to boot into recovery mode on a Mac Pro with 10.11.1. I have a firmware password set. When I boot into the boot menu (alt key), I can click on the password textfield and type the password ...
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0answers
50 views

How can I get my iMac to boot into recovery mode?

I'm trying to get into recovery mode on my mid-2011 iMac but after holding Cmd ⌘ R after the startup noise and until I see the Apple logo it then shows me the loading bar as per usual but then ...
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1answer
85 views

OS volume shows as type 'FFFFFFFF-FFFF-FFFF-FFFFFFFF' after attempting to delete some Linux partitions—cannot log in

I was unable to just delete the partitions left by an old Linux Mint installation by pressing the '-' button in disk utility. I looked online and read that I could reformat them to a journaled format ...
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1answer
39 views

Can the cp command be used to restore a hard drive?

My cousin contacted me for tech support because her computer was refusing to boot to the startup drive, and the issue turned out to be a corrupted drive that Disk Utility refused to fix, telling us to ...
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1answer
30 views

iPhone 6 stuck in iTunes recovery logo

After having a jailbroken iPhone for a while, I wanted a clean version of iOS 9.3.1. So i followed all the steps in iTunes to achieve this. But when the little black bar on the iPhone was filled up it ...
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1answer
62 views

Accidentally ran command to erase volume with “no format”, how can I get it back?

I accidentally ran this command and now I am missing 100gb of space, how can I get it back? All help appreciated!! diskutil eraseVolume free %noformat% disk0s2 Terminal gives this diskutil info: ...
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1answer
117 views

Can't boot into OS X Recovery Mode

I would like to I've recently installed Debian Linux on my Macbook, which required repartitioning the hard drive. I now can't boot into Recovery Mode. Holding down Command+R on boot brings up ...
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2answers
58 views

I have a recovery partition but OS X doesn't use it for recovery

I need to start my El Capitan OS X in Recovery Mode to run csrutil disable. When I restart holding cmdR the Mac directly boots to Internet Recovery Mode. But I need a local recovery partition because ...
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21 views

How recover files from mac OS X 10.10.2? [duplicate]

I understand this is a duplicate of few other posts. But I dont find a solution for this. I was using atom editor. I think there was a bug in atom it seems. Editor deleted the files from disk. I dont ...
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2answers
461 views

Logging in to main user turns off the mac

I am not a mac user, and honestly, I have no idea how to use one (besides the terminal). So, a friend asked if I could help them out with fixing their computer. She says the last thing she was on, was ...
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35 views

Dead MacBook Pro Retina 2015

Today I had to return my MacBook Pro Retina 2015 to my work company. I followed these steps given here https://support.apple.com/en-sa/HT204904 Then, when I was at step 10 of "Erase your drive and ...
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1answer
96 views

13'' MacBook Pro 2010 stuck at blank gray screen, no boot option working

My 13'' MacBook Pro 2010 running Yosemite suddenly stopped booting today. After I press the power button, I can hear the chime and the computer proceed to go to a blank gray screen immediately. The ...
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1answer
63 views

Reset Password app in recovery mode not showing and disks

Note: this question is a duplicate of Unable to reset password in Recovery Mode, but the solution mentioned there was to reinstall the OS, which is not really the solution I'm striving for if there is ...
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4answers
220 views

El-capitan crashing while booting

Objective: Somehow I want to fix the issue and should be able to login to the El-Capitan without reformating as so many valuable files are there Find what has caused this problem so that I can avoid ...
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1answer
51 views

Booting iMac in Recovery partition takes forever

I'm trying to boot the recovery partition on my Mid 2010 iMac 27 to do a Time Machine recovery. OSX is installed correctly already and I can boot that quickly. However, when I try to boot the ...
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38 views

Backup files in single user mode

My Mac crashed for any reason and I'm trying to backup all my files from single user mode. My idea is to backup all the files in an external drive and do a clean installation of the OS. I'm following ...
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0answers
101 views

Stuck in 10.6.8 to 10.11 upgrade installation, no recovery disk available

In attempting to upgrade from OS X 10.6.8 to El Capitan I've run into a bit of stalemate. The installation is unable to complete(indeed, it seems to barely commence) due to issues "verifying or ...
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2answers
71 views

How can I install Mac OS on my MacBook running Linux Mint?

I am new here and I hope that this is the right place to find an answer. My questin is: How can I install a new copy of OS X on my Mac, using Linux? I recently bought a Macbook Pro from a friend. I ...
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1answer
49 views

If I replace my MacBook Pro hard drive can I reinstall OS X using Internet Recovery?

I have a MacBook Pro early 2011 and my hard drive is failing, I was wondering once I replace the hard drive, is reinstalling the OS X as easy as turning it on and booting into Internet Recovery, ...
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1answer
3k views

Unable to boot into recovery mode on El Capitan MacBook Air

I want to disable System Integrity Protection, So i am trying to run this command csrutil disable On recovery mode, But i am not able to boot in Recovery mode, It keep showing user login screen, I ...
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1answer
128 views

Why can't I format my blank SSD from OSX Recovery?

The SSD in my Macbook Pro died suddenly. I bought a blank one, installed it as the internal drive, and booted into recovery mode by holding Command + R. After letting it connect to WiFi and download ...
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1answer
36 views

Can I boot my recovered SSD as a Mac OS X installation

I recovered an SSD from an old, upgraded 2008 Macbook Pro with a broken keyboard in order to recover the data from it. Initially I was planning to put it in my other Mac Pro and simply copy the data ...
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30 views

MacPro 2.1 won't boot from USB nor from MacBook via target mode

My Mac Pro 2.1 (I believe 2x 2.33 quad / 32GB ram / startup disk is a SSD / OS X Yosemite) suddenly started showing up the ?-folder instead of booting so I thought the SSD died. I connected the Mac ...
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1answer
169 views

Accessing Internet Recovery

I have a late 2012 model iMac that I'm preparing to sell. I want to reset it to factory defaults, so Internet Recovery sounds perfect. However, Cmd + Option + R during boot does not work. For that ...
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1answer
311 views

Prohibited symbol trying to boot into Recovery Mode

MacBook Pro early 2011 model with El Capitan (10.11.1 - edit - just noticed there's an update. Not sure if relevant but I'm running it now). I can boot fine into OS X and log in. But I'm trying to ...
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32 views

Can't boot, can't do a recovery, can't reinstall

I try to start in single-user mode and I get about 7 lines of text and 3 lines of dots. It says: Efiboot loaded from device: (then a long alphanumeric number) Boot file path: \system\library\...
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2answers
78 views

Prohibited sign - Can't boot after trying to open Raspian SD Card

So I was following this tutorial https://www.youtube.com/watch?v=Eo4HphBdR10 and opened the folder of the SD Card. The Screen went black and I rebooted. Now I get a Prohibited Sign on boot up. In ...
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1answer
329 views

Flashing folder with question mark OS X 10.11

It seems like I totally messed up my MacBook Pro Retina (15" mid 2014) today. I'll try to tell you the story as short as possible. My MacBook was encrypted and I decided to dual boot Arch Linux on ...
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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 ...
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2answers
364 views

Disk utility detecting error in single user mode, but not when disk utility is opened via recovery mode

I verified the integrity of my Macintosh HD (MacBook Pro 13" 2012, OS X Yosemite) with Disk Utility when I was logged in as a user and it reported this problem: Invalid volume free block count ...
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1answer
145 views

How to mount a DMG image created with dd?

I created an "emergency" image of my dying HD using the procedure explained in Recover a dead hard drive using dd. Now when I try to mount the dmg file I get the message: "The following disk image ...
3
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1answer
73 views

xxd not found in Recovery Mode, Mac OS X 10+

In Recovery Mode, I was trying to access my password hashes, except bash 3.2 returned command not found for xxd. Any help would be appreciated.
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2answers
153 views

How to get the password hashes for a user in Mac OS X 10+, in recovery/single user mode?

I would like to view the hashes on my Mac, in either single user mode, or the terminal in recovery mode. I tried to follow the steps described in OS X 10.9: where are password hashes stored. But I ...
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1answer
42 views

MacBook air is messed up, can't erase the hard drive from recovery

Something happened when installing El Capitan and now I have only one partition in my hard drive with only 30 gigs of space when it's supposed to be 128. I can't seem to erase anything. Any advice?
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1answer
90 views

Entering in recovery system trouble

When I'm trying to enter in recovery system through pressing cmd+R I'm getting OS X Internet Recovery instead of Utilites window. How to avoid it?
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22 views

How do I update the RecoveryOS to version 2.0 on my Macbook Pro?

A few months ago I upgraded to OS X El Capitan. It has been mostly fine except for the ever so annoying System Integrity Protection (SIP) feature. Ever since I had upgraded, I have found my rEFInd ...
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1answer
56 views

How can I tell what version of Recovery HD OS is running while I'm booted to the recovery software?

How can I tell the version of OS X (and the build) that runs on Recovery HD while I'm running in that mode? The Apple menu has no "About" menu that shows that information when you're running normally.
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Concern about a compromised version of the OS

I was reinstalling the OS on my Mac via Internet Recovery using a wifi connection. As it wasn't connected to a power source, the screen of my Mac would constantly go black and I would press the screen ...