Mac

http://www.dummies.com/computers/macs/how-to-boot-snow-leopard-from-a-dvd-rom/


https://www.pcworld.com/article/249059/how_to_install_boot_camp_and_run_windows_on_your_mac.html


https://apple.stackexchange.com/questions/176107/how-to-recover-data-from-macbook-which-wont-startup-properly


https://support.apple.com/en-us/HT201462

https://its.uiowa.edu/support/article/104816


https://www.powerdatarecovery.com/data-recovery-resources/recover-data-dead-macbook.html

https://macreports.com/how-to-back-up-your-mac-that-wont-boot/


https://its.uiowa.edu/support/article/104816

https://support.apple.com/en-gb/HT201314

https://support.apple.com/en-us/HT204904