If you wanna create bootable USB flash drive for Mac OS X El Capitan on Windows PC. You need a TransMac Software. That’s not a problem if you use a computer that supports legacy or UEFI. Just you need TransMac and El Capitan dmg file. Siddharth choubisa September 20, 2016 at 3:43 PM.
Summary
- Bootable USB Stick - macOS X El Capitan 10.11 - Full OS Install, Reinstall, Recovery and Upgrade SANDISK USB FLASH DRIVE 2.0/3.1 - 16GB - 5 years warranty Latest certificate (expires These USBs are NOT produced by Apple.
- OS X El Capitan is finally here, and if you're looking to install Apple's new desktop OS fresh from the ground up, then you'll be needing a bootable USB flash drive to get started with the process.
How to make a bootable USB drive on Linux Mint (19.3) to allow you to install Mac OS X El Capitan on a MacBook with broken or corrupted recovery mode.
Background
I was recently given a 2011 MacBook Pro that had been “well-loved” and was therefore a mess of missing applications, ghost files and generally slow-as-hell. Since there wasn’t much worth saving I wiped it and initiated recovery mode in order to re-install OS X (El Capitan).
Having recently fixed a busted MacBook Air I had learned a bit about Recovery Mode (hold Command+R whilst pushing the Power button and release a few seconds after the machine wakes up). I tried that with this machine, and upon hitting “Reinstall MacOS X” was greeted with a prompt telling me it would take -2,148,456,222 days and 8 hours (an uncaught buffer overflow, me thinks). After about 30 seconds, a window pops up saying “Can’t download the additional components needed to install Mac OS X” and the installation gives up. The detailed error log says “Chunk validation failed, retrying” about 1000 times and eventually gives up altogether.
Further investigation suggests this may be something to do with security certificates having expired and hence the machine not being able to download the necessary files from Apple’s servers, but it seems the error can appear for all sorts of reasons. I also tried Internet Recovery (Command+Option+R) but that gave exactly the same error (and would also only have installed OS X Mountain Lion).
I then turned to attempting to make a bootable USB stick of OS X El Capitan from an image downloaded from Apple. I use Linux Mint on my main laptop and that was all I had available. Apple seem to assume everybody has a spare MacBook from which to create a bootable USB so they provide absolutely no documentation to help with this. I also couldn’t find a single guide online that worked from start to finish, so here I summarise what needs to be done.
Steps
As usual, this is all at your own risk 🙂
First you need to go to Apple’s OS Download Page and (step 4) get ahold of “InstallMacOSX.dmg” for El-Capitan. It’s a 6GB file so it might take a ‘lil while. You will also need to find a USB drive with at least 8GB capacity, and make sure it’s blank. The format doesn’t matter, because this procedure will format it correctly.
(In total you will need to use about 15-18GB of disk space by the time you’ve done all the extracting necessary, which shouldn’t be a problem for most computers but it was a challenge for my laptop with it’s 128GB SSD and dual boot Windows/Linux!)
Then you need to get a program called ‘dmg2img’
You can then extract the DMG
Now double click the .img file to mount it. In there is a InstallMaxOSX.pkg file. This requires a utility called “xar” to extract, which can be installed with these instructions (from https://www.oueta.com/linux/extract-pkg-and-mpkg-files-with-xar-on-linux/)
Mac Os X El Capitan Dmg Bootable Usb
Then build and install with
Now you can extract the .pkg file. It will extract to the current working directory
Now, within the extracted files you will find something called InstallESD.dmg. This actually contains all the interesting boot files, but it isn’t a pristine image, so we can’t just burn it to a USB. Thankfully, a script exists to convert this DMG to a bootable usb, and it’s available here. It takes the DMG and writes everything directly to the USB in the right place.
ONE CAVEAT: When I ran this script on my InstallESD.dmg, it crashed because it didn’t recognise the checksum. I think this is because Apple updates the dmg’s anytime there is a security update for El Capitan so the checksum list isn’t updated. All I did was delete the checksum check from the script above. Essentially, just open the script and delete this section
Once I had done this, I ran the script with my USB connected (/dev/sdb for me, but CHECK YOURSELF with fdisk or similar) and after quite a while it finished copying.
I plugged the USB into the MacBook, and opened the startup menu by holding down Option whilst pushing the power button. This gave me the choice of booting from EFI, or choosing a WiFi network. Click on the EFI, and then follow the prompts to install OS X from the USB drive!
When you’re done, you may need to use Parted or a similar utility to re-format your USB as a normal drive again.
How To Create Bootable USB Installer For MacOS X El …
Creating bootable USB Installer can be done in different ways specifically create bootable USB Installer for macOS X El Capitan on Windows and other macOS versions. The first way to do manually and the second way is to do a software that is pre-build to do all those with a click or two.
How to Create OS X El Capitan Bootable USB Disk?
We are now ready to create the bootable usb disk drive of OS X El Capitan. All you have do is, follow the couple of steps suggested here and you are ready to install El Capitan on any mac computers. Step 1 : Connect USB Disk Drive to your mac computer and Open “Disk Utility” by typing it on Spotlight (CMD + Space Bar) or by going to “Applications – Utilities – Disk Utility”.
How to Create a Bootable USB with macOS Installer
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· OS X El Capitan Create bootable USB drive with Mac Disk Utility Now that you have the installation files ready on your Mac, you can move them to your USB drive for future use. To install macOS on an external hard drive: 1. Connect the USB to your MacBook 3.
How to create a bootable installer for macOS
Download: OS X El Capitan This downloads as a disk image named InstallMacOSX.dmg. On a Mac that is compatible with El Capitan, open the disk image and run the installer within, named InstallMacOSX.pkg. It installs an app named Install OS X El Capitan
How to Create an OS X El Capitan Install Disk on a …
· The installer you create can be used to install OS X El Capitan 10.11 on any eligible Mac computer. X Research source This is a more convent and less time consuming way to install OS X El Capitan on multiple machines, gives you a handy emergency disk, and enables a fresh OS X install.
Creating a bootable El Capitan ISO image
It’s very easy to create a bootable ISO image of El Capitan, if you have a working El Capitan system installed on your machine. Start with going to AppStore and installing El Capitan, so you’ll have an application named Install El Capitan in your Application list. Then
Create Bootable Usb From Dmg El Capitan
Create Bootable El Capitan USB Install Drive with DiskMaker X for Mac Thursday, October 1st, 2015 Author: Dan @ MacSales.com. UPDATE 09/2018: Create a Bootable macOS Mojave Install Drive with DiskMaker X 8 UPDATE 09/2017: Create a Bootable
How to install macOS from a USB
· can only create a bootable installer for macOS Big Sur, Catalina, Mojave, High Sierra, or El download from a Mac that is using macOS Sierra 10.12.5 or later, or El Capitan 10.11.6. Enterprise
How To Create El Capitan Bootable Usb From Dmg
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How to Create Bootable USB Installer for Mac Using …
Create Bootable USB Installer for Mac OS Using UniBeast The first task that you’re going to do is open the Apple App Store. The store will open up after some seconds and tap on “ Featured ” then click on the “ OS X El Capitan “.
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Unable to create El Capitan Bootable USB
· All I’m trying to do is create a bootable El Capitan USB :-(. Can anyone offer some help please ? CoastalOR macrumors 68030 Jan 19, 2015 2,844 1,044 Oregon, USA May 7, 2018 #2 I’ve only used sudo per Apples instructions.
Install El Capitan From Usb
El Capitan From Usb Mac OS X Utilities I But i am helpless as there are no servicing centre of apple in Bangladesh. In this article, you are going to learn how to create bootable USB for Mac OS in case you dont have a Mac computer.
Os X El Capitan 10.11.0 Bootable Usb Dmg File
Oct 04, 2015 As usual, Apple no longer supply a bootable USB Flash Drive with latest OS X releases – including the new OS X 10.11 El Capitan. Using this tutorial you will be able to create your very own.