Ubuntu – How to create a bootable USB from a .iso file?


I am trying to create a bootable USB stick from a .iso image (it isn't a linux distro or anything of the sort) intended for use with a CD. I've tried UNetbootin and dd but they don't boot.

Best Answer

Try Ubuntu Startup disk creator, I don't think it discriminates about which input ISO you give it. (System->Administration->Startup Disk Creator), then select the .iso you want to burn and the output USB drive. I've used it several times now for creating a boot environment on both a thumb drive and a backup USB hard drive.

You haven't told us anything about the USB drive itself though, it might be handy to::

  • print the output of sudo fdisk -l /dev/sdX (where sdX is the device (sda/sdb/sdc etc) name given to the USB drive upon plugging it in, you can find this at the bottom of dmesg as you insert the drive)

    Mine (in a MacbookPro):
    Device      Boot    Start         End      Blocks   Id  System
    /dev/sdb1               1          26      204819+  ee  GPT
    /dev/sdb2   *          26        3065    24414064   af  HFS / HFS+
    /dev/sdb3            3082        3212     1048576   82  Linux swap / Solaris
    /dev/sdb4            3212        9291    48827392   83  Linux

    (Make sure a partition on the drive is actualy marked as bootable (* in the boot column)

  • attempt to boot from a bootable USB thumb drive or similar on your machine to test it, maybe its not capable or not setup to boot from an external USB device (check BIOS for more info)

  • also, try the bootable drive on another machine as this will at least tell you if the drive itself is working correctly