We’ll walk through the process here, but don’t forget to check OS X 10.8 system requirements for the destination Mac before beginning. ![]() I needed to reinstall one of my Windows PCs at home recently, and realised that I only have Windows 7 DVDs, but no Windows 10s.By creating a bootable install drive, you can perform clean OS X 10.8 installs, install it on separate partitions, and install OS X Mountain Lion on Macs that don’t have internet connections. Since it’s possible to boot and install Windows 10 from USB, that’s what I decided to do: download Window 10 ISO and burn it one of the USB sticks I have. This approach will be simpler for any other ISO image like Ubuntu or CentOS, so there’s a separate Steps 3-5 for them at the end of the post. Here are the steps I had to take on my MacBook, originally procedure was written in macOS High Sierra, but I tested it in MacOS Mojave 10.14.2 as well. All of these need to be done in the Terminal app. ![]() Windows 10 is a very specific bootable media, so the process is a bit involved. For generic Linux installation ISOs this procedure would be simpler. So the first two steps are the same, then Windows and Linux have separate procedure. Step 1: Confirm partitions before inserting USB use dd command to burn Linux installation ISO onto USB py all the files from that folder onto the USB stick.format USB stick with FAT-32 filesystem.erase USB stick and create MBR (master boot record). Use the diskutil command to list all disks and partitions on your Mac. :/ $ diskutil listĢ: Apple_APFS Container disk1 500.0 GB disk0s2Ġ: APFS Container Scheme - +500.0 GB disk1ġ: APFS Volume Macintosh HD 466.2 GB disk1s1Ģ: Apple_APFS Container disk3 29.8 GB disk2s2Ġ: APFS Container Scheme - +29.8 GB disk3Ġ: Apple_partition_scheme +173.1 MB disk4ġ: Apple_APFS Container disk6 80.0 MB disk5s1Ġ: APFS Container Scheme - +80.0 MB disk6ġ: APFS Volume Raven-Core 70.1 MB disk6s1ġ: Apple_HFS F-Secure XFENCE 18.1 MB disk7s1Ģ: Apple_HFS Backups 3.0 TB disk8s2 Step 2: Insert USB stick an re-run diskutil list This is simply so that you can run the same command again after inserting USB and easily spot the USB device. This time I can see there’s a disk9 showing up, with 64GB of size which matches my USB stick size: :/ $ diskutil listĬhances are, your USB stick has a PC standard FAT16/FAT32 filesytem, and will be mounted automatically. ![]() Sure enough, it’s mounted as /Volumes/NONAME! Creating Windows bootable USB Dasboot iso os x Pc# IMPORTANT: these steps are only needed for Windows ISOs. ![]() You’ll have the new filesystem mounted automatically, as you can see it’s empty (1.1MB used of 14GB): :/ $ df -h | grep disk9 This single command will erase the USB stick, make it bootable by adding a Master Boot Record (MBR) and create a Windows-friendly filesystem (FAT) on it: :~ $ diskutil eraseDisk MS-DOS "WIN10" MBR disk9įormatting disk9s1 as MS-DOS (FAT) with name WIN10 Step 3: format USB stick for Windows boot If you’re burning a Linux ISO, skip this and go to the Creating Linux bootable USB section below, it has its own steps. Great stuff, now we’re moving to the next phase: we need to mount the Windows ISO image as a folder and then copy all the files onto the freshly formatted /Volumes/WIN10 USB stick. Simply go to the directory where you have the ISO image and run the open command for it: :/Volumes/SSD $ open. Go into that folder and do ls to make sure you can see Windows DVD files there: :/Volumes/SSD $ cd /Volumes/CCSA_X64FRE_EN-US_DV5/ You should now have it mounted under folder like this: :/Volumes/SSD $ df -h | grep EN-US You’ll have the MacOS Finder window with Windows ISO content pop-up, just ignore it and go back to the terminal.
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