Firstly, not really Windows 8, but Windows 8.1 (which matters?) As a family IT support person I’ve been asked to reinstall Win8.1 for a family member, and I don’t know if the bigger cause for my misfortunes was it being pirated, or Win8.1 breaking reinstalls (as I’ve read online from multiple sources), but it certainly wasn’t fun. No matter what I’ve done, I’ve got the message: Insert Media. Some files are missing....
With your ISO ready, and the USB you plan to flash ready, here’s the steps to achieve victory. Your USB needs to be a bit bigger than the ISO, but the margin may vary. Remember that your USB will be erased during this process. Open a Terminal Window Run diskutil list and find your USB (/dev/diskN) Run diskutil unmountDisk /dev/diskN. It should print Unmount of all volumes on diskN was successful...
First Mac I ever owned was (and still is) Apple’s 2015 standard 12" MacBook. I love it even if it stopped being supported and it’s last OS is MacOS Big Sur. But in 2017 I had to change it’s logic board (a drive issue?) and once it came back, after a week I’d noticed it’s Serial Number was missing. No biggie? Precisely what I thought, and left it unattended. Happily used it until I’d upgraded....