How to Create an OSE Linux USB using Mac Guide by Alex Au 2018

Here are the actual commands I used to load OSE linux onto a flash drive. Comments included as `* This is a comment`

Successful Attempt

```

• Find the name of the flash drive

diskutil list

• Unmount the flash drive by its name, in this case, /dev/disk2

diskutil unmountDisk /dev/disk2

• Erase the flash drive with the command line
• Set it up as FAT32, a microsoft format compatible w/ linux
• Rename the disk as OSE in all caps to avoid a name error

diskutil erasedisk FAT32 OSE /dev/disk2

• Install rEFInd: instructions from https://www.lifewire.com/dual-boot-linux-and-mac-os-4125733
• I was on El Capitan, so I disabled SIP as described and re-enabled it

• Download unetbootin from http://unetbootin.github.io/
• Install from iso, which did work for me though authors claim it doesn't.

• Restart computer
• Use the arrow keys to select either the Boot EFI\boot\... entry (rEFInd) or the EFI Drive entry (Mac boot manager) from the list.
• Click "Try without installing Linux"
• Boom. Watch it load.

```

Failed Attempt

• See below for my "Attempt #1", which failed because I saw the error from REFind, "Starting legacy loader / Using load options 'USB' / Please make sure that you have the latest firmware update installed. / * Hit any key to continue *, which means that Mac's firmware is conflicting with the linux startup sequence, and it needs to be formatted in another way to comply.

```

• List your partitions, which is another entity different from and part of your disks

df -h

• Unmount the partition by its name using this strange syntax

diskutil unmount /dev/disk2s2 Volumes/OSE on disk2s2 unmounted

• Finally, download the linux.iso file onto the flash drive
• Note that we target the "disk2" (the disk) and not "disk2s2" (the partition)
• There is strange syntax here, adding an "r" in btwn /dev/ and disk2 for /dev/rdisk2
• Use "CLT+T" command to check it's downloading progress
• Not sure what bs= does, seems like a timeout prevention thing

sudo dd if=~/Downloads/OSELinux1.0.iso of=/dev/rdisk2 bs=1048576

• Wait 30+ minutes for download to complete

```