Any way to manually make a bootable USB from ISO?

I've been using Unetbootin but it occasionally fails to create a bootable usb the way I need it to, especially with the newer versions.

Is there a way I could extract the iso myself?

Solution 1:

This is a bit destructive, but works all the time. It will write everything to the /dev/sdb (which is the usb device. )

sudo dd if=/path/to.iso of=/dev/sdb bs=16M

read the manpage of dd

Solution 2:

Depends. If you are going to use a Live Linux ISO like the Ubuntu LiveCDs then you can use the tool that comes with Ubuntu called Startup Disk Creator. Type Startup in Dash and it should appear there. From there on, the disk creator can create a Live USB from any Linux ISO that is a LiveCD.

If you are referring to a Windows ISO for example that changes everything. I suggest you see this question: How to create a bootable USB from a .iso file?