need guide to install on old macbock air from 2013 ?
can you check theses points :
- if you still have version before 10.7 , you can boot on USB iso ,
with Option ( ALT) pressed at start - before 10.7 , you can still format your disk in GPT in one partition , and keep partition driver
- ** do not bless any other system os x ** , as it will always start to find theses osx boot partitions.
- install with Grub , and after always boot with Alt to see partition /boot/esp linux appears
if this after 10.7 or more , or if you dont have any more a HFS+ partition , it will be not easy , because , you have the recover partition , and you can ONLY bless an os X partition …
for create usb Iso you can use dd command , beware to always check BEFORE disks and point mounts (dev/sdX )
fisrt check return
sudo diskutil
see this video
just be careful on this point :
there is 2 types of install linux , with or without secureboot ,
- with secureboot ( like unbuntu / debian / fedora / … ) they use a shim key micro$soft for that
- without secureboot ( Cachyos / endaevouros , Archlinux , and many others) , you have to boot with option ( alt) each time ti see and select boot efi.
** do not format /boot/efi disk or recover, always add as mountpoint **