I've used the dd command to copy files from an ISO image to a USB stick, but I'm not sure if I missed a step to actually make the USB bootable. I configured the BIOS to boot from the USB, but it keeps taking me back to my regular grub menu where I can select my OS or UEFI options instead of booting from the USB. Any advice?
3 Answers
Make sure you're using an ISO that's designed to be bootable. Not all ISOs will work the same way, especially Windows ones. If it's Linux, you should be on the right track, just double-check that it's a hybrid ISO, or it might not boot properly.
To create a bootable USB with the dd command, the command you're looking for is something like: `sudo dd if=/path/to/image.iso of=/dev/sdX bs=4M status=progress && sync`. Just a couple of pointers: 'if' is your input file, 'of' is the output (your USB), and 'bs' sets the block size – but you can skip that if you want. Just make sure your ISO is a hybrid one that includes bootable files; most Linux ISOs are suitable but some Windows ISOs won't work.
You should share the exact dd commands you’ve used. That way, we can see if there’s something you may have overlooked. Also, if it's not a Linux ISO, it likely won't work for booting with the dd command.
This is super helpful! I've used dd before, but wasn't sure about the hybrid ISO aspect. Thanks for clarifying!