the process of reinstalling OS X

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2answers
2k views

Reinstalling OS X Lion after erasing the HD

A friend of mine recently bought a used Macbook (I believe it's the model before the last Macbook model from 2011). It had OSX Lion installed. I rebooted the system, held down Command + R and used ...
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1answer
38 views

Can't see Apple_HFS partition after using Minitool Partition Wizard

I tried to reduce my partition size using Minitool Partition Wizard on my BOOTCAMP partition (I didn't touch Apple_HFS partition) now I can't see my Apple_HFS partition in Disk Utility. However this ...
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1answer
11 views

Reinstall OS X due to compromised OS X partition whilst keeping Boot Camp

I have an iMac with OS X and Windows 7 dual boot (which was installed via Boot Camp). Recently, the OS X partition has been compromised, but the Windows one works great. I have created a bootable USB ...
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2answers
30 views

How to reinstall OS X on an iMac which only has Ubuntu installed on it?

I have a 2011 iMac with only Ubuntu installed. It's not a dual-booted iMac, it only has Ubuntu installed. How do I revert back to original OS X and remove Ubuntu? I've tried pressing various keys (⌘ ...
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2answers
57 views

Disk Utility (recovery mode) stuck at loading

I want to do a clean install of el capitan OS. I booted to recovery mode, chose reinstall os x and followed the steps. So far so good. When it came to choose the destination disk where I wanted to ...
14
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8answers
31k views

This copy of the Install OS X El Capitan application can't be verified. It may have been corrupted or tampered with during downloading

Macbook Pro 13" 2015 with OS X Yosemite on board. I've been trying to install OS X El Capitan, but always get the following message: "This copy of the Install OS X El Capitan application can't be ...
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0answers
6 views

No turning off while reinstalling El Capitan

I am reinstalling the Macbook Pro 2015 because I want to sell it. During installation (which takes about 5 hours (!)) the Macbook turns itself off although it is plugged in. How can I avoid this?
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2answers
5k views

Can't download Mavericks - I got a Mountain Lion CD, what to do?

This is the most silly question I'll ever ask, and I'm sorry for this. But doing the following: Step 1: https://itunes.apple.com/en/app/os-x-mavericks/id675248567 Step 2: ...
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3answers
31k views

MacBook Pro: OS X reinstall is taking “forever”, (over 12 hours) to finish

This is my first time ever dealing with a Mac OS X reinstallation. About a week ago, while working online, my MacBook Pro just started to be very very slow to do anything. I would get the WHEEL ...
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4answers
9k views

Reinstall OS X Lion on Macbook Air 2012

I have a MacBook Air (11-inch, Mid 2012) MD223LL/A MBAIR 11.6/1.7/4/64FLASH running OS X 10.7.5. It shipped with Lion. I want to reinstall the OS on the laptop without an internet connection. Is this ...
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3answers
116 views

How to clean install OSX without formatting drive?

What's the best way to clean install (not upgrade) OSX (from 10.10 to 10.11) without formatting my drive? This is a MBPr with a 1TB internal, where I have 700GB of media that I would like to leave on ...
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1answer
31 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
2k views

El Capitan gives me a kernel panic error right after installing

Almost immediately after the installation reboot, and seconds after the apple logo appears the following error shows up; panic(cpu 0 caller 0xffffff8017d263a6) : "zone_init;kmem_suballoc ...
0
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1answer
115 views

Can I copy a bootable El Capitan installer USB stick to a hard drive partition and install from there?

I am salvaging a mid 2013 MacBook Air 11" that was discarded with a broken screen backlight due to beverage spill and missing its SSD. (I have a very tiny budget right now so I'm only spending on more ...
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2answers
41 views

Does anybody know how long installing El Capitan onto a USB 2 pendrive from another USB 2 pendrive takes on a MacBook Air?

I'm trying to resucitate a discarded 2013 11″ MacBook Air with no internal drive and hence no OS. The Apple Store Genius bar tested it and found the only problems to be the missing drive and broken ...
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1answer
1k views

Can I install OS X from external hard drive to internal hard drive?

My hard drive is failing so I put a brand new 500gb hard drive in my MacBook 2008 white 13". I have a retail disc of Snow Leopard but the install keeps failing over and over again. It hangs at 29 ...
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1answer
52 views

Can I re-install OS X on an encrypted drive without the password?

I don't know my password to my Mac OS X account and it has file encrypt enabled on drive. If I reinstall Mac OS X, will it require a password to do so?
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1answer
98 views

Replacing El Capitan with Mavericks

I'm trying to install Mavericks from a bootable USB. I'm using this guide; http://macpaw.com/how-to/clean-install-os-x-mavericks-on-my-mac I delete El Capitan in disk utility, but there is no ...
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3answers
2k views

Is it possible to install flash firmware update without having access to OSX?

So I erased my HD and wanted to install Mac OSX Mavericks on my MacBook Air mid 2012 model and after I booted from the USB and was about to install Mavericks the damn thing tells me it can't do so ...
1
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1answer
51 views

10.11 Installation on old Macs

I want to clean install 10.11 on a MacBook Air 2008 and an iMac 2007.Both seem unable to boot from netinstall or an USB Stick. Which options do I have to get them quickly to 10.11?
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4answers
1k views

Pros and cons of wiping a new Mac?

Coming from the PC world, most made-to-order manufacturers (e.g., Dell, HP, Acer, etc.) all have annoying little addons which I consider spyware/bloatware--things like toolbars with ads. When buying ...
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5answers
180k views

How do I create a Mac bootable USB drive using Windows?

My MBA 2012 with OS X 10.9.4 Mavericks won't boot anymore - it simply freezes after the initial jingle. I already tried resetting NVRAM and SMC, but to no avail. I don't have any time machine backups. ...
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1answer
62 views

Offline installation of El Capitan from a Windows machine?

My macbook pro OS X is broken behind repair and I need to re-install the OS X. Unfortunately it seems the online installation is not working, because it stops downloading about half way through and ...
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0answers
30 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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0answers
20 views

What happens to programs like node, npm or grunt that has been installed globally after os x reinstall?

I have huge problems with the kernel_task. I have a Mid-2015 15" rMBP with discrete GPU. It really annoys me when kernel_task goes 400% 500% CPU and I could not solve this problem. I want to reinstall ...
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3answers
26k views

Changing SSD's and keeping everything

I have a mid 2010 13" MBP. I have an SSD, its not big enough so I am upgrading from 128GB to 256GB. How can I take everything from the current SSD and then upload it to the new SSD - effectively ...
0
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1answer
36 views

Clean install unused ID Apple

My dad just gave me his MacPro for me to test it, since I never used before. Since I wanted it cleaned, I follow some tutorial on the Net that said I needed to reboot it with Command+Option+R, delete ...
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2answers
80 views

How to restore OS X after installing Windows in a single boot configuration

I want to restore OS X after installing Windows in a single boot configuration. So Windows is occupying the whole disk. Now I want to erase the hard disk and restore Mac OS X Mavericks. How do I do ...
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1answer
31 views

What is best after a clean install, copying Application Folder or reinstalling all the applications?

I have done a clean install but I was wondering if it would make any difference if I just reinstall all my old applications or if I just move my backup applications folder.
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1answer
28 views

Yosemite stuck on “Setting up” for hours

I recently replaced the hard drives on my Mid 2010 Mac Pro, and thus had to reinstall OS X Yosemite. (I went with Yosemite instead of El Capitan because, as the computer is destined to become a file ...
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1answer
327 views

Backup and restore Keychain

I want to reinstall my system so I would have fresh Mac OS X. Is there a way how can I export/backup all content of my Keychain Access (all certificates and other things) and then after reinstall to ...
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0answers
23 views

MBPr doesn't boot - How can I download the El Capitan installer from a PC?

I messed up a bit, and my MBPr (mid 2015) can't boot anymore. The recovery partition is out too. I just get the recovery process from network thing, but I don't have internet at home. Hotspot doesn't ...
1
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2answers
229 views

Bought a brand new SSD Samsung 850 evo, plugged in, restart macbook, hold option, and no disk utility screen

So I bought Samsung 850 EVO, 250GB, and plugged it into my Macbook (Mid-2010, Macbook 7.1). I installed it without mounting screws, because I don't have screwdriver to unscrew the ones from the old ...
3
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1answer
34 views

Transferring Files After a Clean Install

I am planning to do a clean install of Mountain Lion (on a Macbook Pro that was updated to Yosemite) after being told that I have some corruption in my hard drive. The computer (only 3 years old) has ...
0
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2answers
44 views

How to wipe an old white MacBook?

Reading over Apple's documents on how to wipe a machine, it's all about internet installs. Now it's been so long since I did anything with this machine, I don't recall the process... was 10.7.5 an ...
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0answers
48 views

Having trouble making bootable El Capitan installer on early 2013 MBP that works on mid 2012 MBP

My friend bricked his mid-2012 (non-Retina) Macbook Pro (I'm not sure right now which clock speed he has). I have an early 2013 Retina Macbook Pro. Using my computer, I made a bootable external USB ...
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0answers
34 views

Does my stuck shift key affect the proper boot of my installation mediums?

I have a late-2009 unibody Macbook Pro. My left shift is stuck for ages and I have been avoiding this problem by pressing some other keys during boot to avoid safe mode and by using Karabiner to remap ...
0
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2answers
51 views

What URL does Recovery HD connect to in order to download OS X?

My college Wi-Fi Network doesn't support OS X reinstalls through Recovery HD. If I were to ask the people in charge of our Network to manually enable access to Apple's Servers so that I could do ...
0
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2answers
43 views

Do I need to buy Mac OS X again?

I am running 10.6.8 on my Mac Pro 1,1 and I want to reset it. I don't have the install disk anymore, so do I need to buy it again? Or can I copy the files from my system, and put them on a disk and ...
1
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2answers
206 views

I want to clean install OS X (El Capitan) on my MacBook Pro with two internal hard drives

I have a MacBook Pro Late 2008 with two hard drives in it. (I replaced the CD drive with my original drive and I added SSD 60 GB on which I installed the OS X Yosemite. This happened some years ago.) ...
0
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2answers
52 views

Re-installing OS X with apartment Wi-Fi

I need to re-install OS X Lion and I'm at a stage where when I turn my laptop on, it needs an internet connection to proceed. I have a good strong Wi-Fi signal, but I need to sign in. I usually do ...
0
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2answers
34 views

Unable to unmount disk

I have received an old MacBook from my Dad and he had wiped it clean, but I don't think he's done it correctly. I am having issues with unmounting and re-installing Lion OS X back on, which it came ...
2
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1answer
55 views

Reinstalling OSX is blocked with unreviewed Apple ID

I got a couple-of-years-old MacBook Pro with OSX Lion, and I attempted to format it. I erased the installed drive using Disk Utilities and then chose to reinstall OSX. Unfortunately, in order to ...
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5answers
12k views

How to extract InstallESD.dmg from my iMac Recovery Partition?

I'm trying to extract the InstallESD.dmg image so that I can create a USB key any time I want to in the future, to recover/boot my 2011 iMac. I would think this would be no problem at all, since the ...
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0answers
31 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: ...
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0answers
19 views

OS X installation with Netinstall

I'm installing OS X using Netinstall which boots the image from an OS X Server on the network.The installation is successful and reaches the choose your location screen but my requirement is to have ...
0
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0answers
28 views

Install Mavericks on Mac Mini with a completly formatted hard disk

I have an older Mac Mini with Snow Leopard installed on it. When I was upgrading to Mavericks, the installation was stuck and the MacMini didn't start any more. I didn't know about Recovery etc. So ...
2
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1answer
7k views

Macintosh HD not showing up on disc utility

I am trying to do a clean install on my Macbook Pro 13" from 2011. Here is what I did so far: 1) Booted up on my USB Stick with Mountain Lion Installer mounted on it 2) Opened up Disc Utility and ...
12
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3answers
27k views

Reinstall Mac OS X Mountain Lion before selling a Mac

I want to sell my laptop (Macbook Pro late 2011). I have erased my disk drive but it seems that I cannot reinstall Mac OS without an Apple ID. At the origin my mac was shipped with Lion, I have ...
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0answers
78 views

Downloading additional components on OS X Yosemite fails at 345 chunk or so

I have a MacBook Air 2015 edition and I tried to perform a reinstall on it. But after spending a lot of time simple getting to the internet recovery option, I was finally able to get to the ...