4GB+ USB Stick; Windows 7 ISO from Microsoft downloaded to your OSX- Machine When I restart and hold the alt key, my bootable USB for windows 7 never.
Table of contents
- The Simple answer
- Create the USB Installer
- How to Create Windows 10/8/7 Bootable USB on Mac Mojave or Serria
- Get the latest updates from Twocanoes
Recently my cousins asked me to install Windows into a new computer that they have bought and came without any OS. I stopped dealing with Windows seven years ago and currently in my home we use Arch Linux and MacOS, so it turned out to be a little bit challenging for me to get in touch again with it. I opted to download a custom image of Windows 10 and burn the ISO into an USB using Etcher as one typically does when installing a Linux distribution to create a bootable Windows 10 installation drive from my Macbook, but things were not as simple as they seem.
Despite the advice, I burnt the image and tried to install it anyway without having any positive result. The device was not even recognized by the computer, and it turns out that in this way the device was not satisfying the required UEFI boot process. Formatting the USB drive can be done from the command-line fairly easily.
I had this problem with a friend computer, it was an old iMac and I'll tell you it is not going to be easy. The first thing you have to do is make sure what model you have the year when your computer has been released then check on the official apple website to see what is the latest macOS or Mac OS X version available for you computer. In this case, you have to download the dmg file, that can be found on the web, for example, one websites that provides some macOS and Mac OS X is this for El Capitan, if you need another version, I'm sorry but you have to search for it.
Here things start to get a little tricky. First of all you have to flash the image on a USB drive, I recommend etcher, that works on everything Mac, Linux and Windows too it's extremely easy to use and you just need to select the drive and the image and etcher will do everything by itself, plus it's free here. When the USB drive is ready you can plug it in you mac and press alt option while booting, you have inserted a firmware password, it will ask you to unlock the firmware by inserting that password, else it will take you to all the bootable drives, including your USB device.
If you see the mac logo with a stop icon over it, it means that you downloaded a too new version that is not supported from your mac, else it will start.
When it start, it won't install, saying that the system can't verify the downloaded image, that's why you have to navigate on the "utilities" menu on the top bar and open the terminal. That's basically because every image of mac has a certificate that can expire, so, if the certificate is expired you won't be able to make it work, unless you change the date the date is different from mac version to mac version, so based on that you have to change it, usually just search for when was that version released and se the current date to that date or even one or two days later to make it work.
Then try to install the system, if this does not work again, you can start the installation without verifying the image, but you should really trust the image you're using from being corrupted or modified just to make sure the download went right, use the SHA-1 code to make the file has been downloaded right.
The Simple answer
So, to proceed without verifying the image, from terminal, type in this command: sudo defaults write com. Is possible that you won't need the sudo at the begin, in that case just remove it from the command and start from "defaults" Now you should be able to install macOS from a USB drive Just a little thing, make sure to have formatted the disk before proceeding, I would recommend to make a partition that takes the whole disk in mac Journaled format, then if you want you will be able to encrypt the disk the installer will ask you to do that later , instead, if the disk was encrypted before, you will have to insert the encryption key of the disk to continue the installation process.
Really hope this help, I spent a lot of hours to do this on a really old iMac from Good luck! In my humble opinion, the easiest and a free solution for creating bootable drives is Rufus.
Create the USB Installer
You will be able to download a copy of old one version of powerISO by provided links this tutorial. I've tried many tutorials on how to create a mac bootable USB drive from Windows but none of them worked.
Please find the details on my github page. Thank you for your interest in this question. Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site the association bonus does not count. Would you like to answer one of these unanswered questions instead? Home Questions Tags Users Unanswered. Ask Question. Asked 5 years, 2 months ago. Active 3 months ago.
How to Create Windows 10/8/7 Bootable USB on Mac Mojave or Serria
Viewed k times. Any help would be greatly appreciated! Thanks for your response. Then click Next and follow the onscreen instructions to begin installing Windows.
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Follow the onscreen instructions to install Boot Camp, including Windows support software drivers. You will be asked to restart when done.
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