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.





Your advice is exactly what I needed right now.
This gave me a whole new perspective on something I thought I already understood. Great explanation and flow!
Such a simple yet powerful message. Thanks for this.
You have a real gift for explaining things.
This is one of the best explanations I’ve read on this topic.
It’s great to see someone explain this so clearly.
I tried your suggestion and it worked perfectly for me. Cheers!
This was so insightful. I took notes while reading!
Posts like this are why I keep coming back. It’s rare to find content that’s simple, practical, and not full of fluff.
I love how clearly you explained everything. Thanks for this.