Advertisement As you may know, you can reinstall macOS on your computer via the internet recovery. But did you know that you can create a bootable USB drive to install macOS from? This will let you boot your Mac from a different source if it won’t work normally, and makes installs on multiple machines easy. Let’s see how to do this. Choosing a USB Flash Drive for Installing Mac USB flash drives are cheaper than ever, so you won’t have to spend much for this task.
However, make sure to buy a name-brand flash drive (like SanDisk, Kingston, or PNY) from a reputable store. Stay away from super-cheap drives with suspiciously high storage on sites like eBay. These drives have their firmware hacked to report a false size to your operating system. Not only will the transfer speeds be painfully slow, but using them may also result in loss of data or even a damaged USB port. Also, check to see what ports you have on your Mac. The 12″ MacBook has a single USB-C port, while MacBook Pro models from 2016 and later feature USB-C ports exclusively. Fortunately, there are USB-C drives available, or you can use a USB-C to USB-A adapter.
Step 2: Copying file manually from ISO image on PC to bootable USB: Now that the USB is ready we need to copy ISO files to the USB, we will do this manually. Following steps will help you make USB drive bootable for Windows 10 and older versions. However, if you have DVD you can copy the files to bootable USB. But you’ll need to create a bootable Windows 10 USB drive first. The process is a little more complicated if you’re using a Mac. Microsoft offers a simple tool to create a bootable USB on Windows, but there is no such tool for Mac users. Fortunately the process is pretty easy, if you know how.
It’s best to go with a USB 3.0 drive, with a minimum size of 16GB. The is good overall value for the money; we’ve highlighted for more options. $9.99 Formatting Your USB Flash Drive You can only create a bootable installer for macOS on a Mac. If you’re using a flash drive that already has data on it, make sure to back up any important files as you’re going to erase everything in a moment. Navigate to Applications Utilities, and open up Disk Utility. You should see your flash drive under the External section in the left pane.
After selecting it, click on the Erase button along the top. Choose a friendly name (which you’ll use later), and make sure to choose Mac OS Extended (Journaled) for the format. Finally, click Erase and you’re done with this step. Downloading the macOS Installer To download the macOS installer, open the App Store and search for your version of macOS. Click on the Download button if you’re on High Sierra or earlier. MacOS Mojave is slightly different, as it opens up your System Preferences to download the installer.
This is because one of is a new way of installing updates. The experience of building the USB with DiskMakerX7 was painless. I am now able to boot to a screen with two icons like the one shown in this article. At this point, I select the USB drive that is named 'Install OS X High Sierra' and that takes me to the menu with 4 choices. When I go into Disk Utilities, I am able to re-format the 500GB HD in the iMac and it automatically creates a new volume. I named my volume 'Abyss'.
Then I return to the 4-choice menu and select 'Install MacOS', and click the Continue button. The Continue button turns gray - forever.
Yes, I have verified that this iMac is eligible to use High Sierra. What could be wrong?
Is it possible that I need a newer OS X Base System? Can that be upgraded?
Create a Bootable Win7 USB Stick on OSX Prerequesites:. 4GB+ USB Stick.
Windows 7 ISO from Microsoft downloaded to your OSX-Machine Preparing the drive. Open Disk utility.
Find the drive, format it with the following options:. Choose Master Boot Record (MBR). 1 Partition (full size). MS DOS FAT Hacking Bootcamp If your Mac is rather new, you can't choose the 'Create USB' Option from Bootcamp so you have to hack Bootcamp first. Open the 'Sytem Information' App and find out the 'Boot ROM Version' and your 'Model Identifier'. Open Terminal. Backup.
sudo cp /Applications/Utilities/Boot Camp Assistant.app/Contents/Info.plist /Desktop/Info.plist.bak. Edit Info.plist `sudo vi /Applications/Utilities/Boot Camp Assistant.app/Contents/Info.plist'. Under DARequiredROMVersions add your Boot ROM Version, enclosed in tags, like you see it there. Under PreUSBBootSupportedModel add your Model Identifier in the same manner.
Change PreUSBBootSupportedModels to USBBootSupportedModels, removing the 'Pre'. Save+quit:wq. Sign the Boot Camp App again. This step does NOT work if you put the backup file inside the.app-Container, or added any other files. This is actually a mistake in most of the tutorials you find out there. Install XCode.
Install Xcode-command line tools. sudo codesign -fs - /Applications/Utilities/Boot Camp Assistant.app/Contents/MacOS/Boot Camp Assistant Creating the USB Drive. Open Boot Camp Assistant. Select 'Create USB Drive', uncheck the other options. Select your preformatted drive and the ISO and you're good to go. Hello, I followed these instructions for my macbook 5,1 to make a bootable USB of windows 7. I don't have my superdrive in my macbook so I'm trying to install windows 7 using bootcamp and the USB stick.
I made a 100GB partition on my SSD to use for windows using bootcamp. When I restart and hold the alt key, my bootable USB for windows 7 never appears. (i formatted the USB with 1 partition in FAT and Master Boot Record before I used bootcamp to create the Windows bootable USB) What can I do? The USB won't boot to install windows. To add some tips onto this:.
You can install Xcode command line tools WITHOUT Xcode, via the guide at (basically type xcode-select -install and click on Install (NOT on 'Get Xcode')). If you are on High Sierra, you'll have trouble due to SIP (system integrity protection).
Just COPY /Applications/Utilities/Boot Camp Assistant.app to your DESKTOP, then edit the Info.plist of the COPY, and run the codesign on the COPY: sudo codesign -fs - /Desktop/Boot Camp Assistant.app/. Then launch the copy. If your Info.plist does not have DARequiredROMVersions, ignore that part of the guide. On High Sierra, that stuff has been removed.