Here is a quick tutorial how to start Debian and probably other Debian based distros from a USB Hard Disk. With USB Flash Drive usually there is no need for any custom actions.
1) Once the installer complains for missing CDROM and asks to load CDROM drivers select NO:
You can get the available device names by pressing ALT+F2 to enter a new console and type:
ls /dev/
or
dmesg | grep disk
Just remember, it has to be the fourth partition, e.g. /dev/sda4.
Next press ALT+F1 to return to the Setup screen.





Keep writing! Your content is always so helpful.
Thank you for offering such practical guidance.
This was a very informative post. I appreciate the time you took to write it.
Thanks for making this so reader-friendly.
I’ve bookmarked this post for future reference. Thanks again!
Thank you for making this topic less intimidating.
Such a simple yet powerful message. Thanks for this.
I hadn’t considered this angle before. It’s refreshing!
Thank you for sharing this! I really enjoyed reading your perspective.
I feel more confident tackling this now, thanks to you.