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.





I’m definitely going to apply what I’ve learned here.
I never thought about it that way before. Great insight!
I appreciate the honesty and openness in your writing.
The way you write feels personal and authentic.
You always deliver high-quality information. Thanks again!
This was a great reminder for me. Thanks for posting.
Your passion for the topic really shines through.
I like the efforts you have put in this, regards for all the great content.
Useful and well-structured. Looking forward to more posts from you.
I love how clearly you explained everything. Thanks for this.