I've recently installed updated my Ubuntu 14.04 to 16.04 and one of the resources I most use is the Startup Disk Creator. And one of the problems that I'm having is, I can't install an .ISO at my USB drive and have space for storage, I need to choose between one and another. Let me show the difference:

Top image is from Ubuntu 14.04 Startup Disk Creator which has Reserve Extra Space option. Bottom image is from Ubuntu 16.04 where the option is missing:


And more, after installing the system, my drive becomes impossible to format even in the own Linux, not even gparted was able to format it, recognizing my 8gb USB drive with a "Libparted Warning":

So if choose Cancel, it shows as a Unallocated file system

If I choose Ignore, it shows many file systems with a size that my USB drive doesnt have



So I'm forced to format my USB drive at another computer, I used my Chromebook to format and be able to use it again. I'm willing to downgrade to 14.04, so I don't deal with these kind of bugs anymore. What should I do?

1 Answer 1


I'll answering your last question first. The newer live-usb ISO's are hybrids that work for both MBR and GPT systems. gparted cannot read these after Startup Disk Creator has burned the ISO to the USB flash drive. Rather than taking your USB to another computer to reformat it you can use dd (Data Destroyer, real name Data Duplicator):

sudo dd if=/dev/zero of=/dev/sdX bs=512 count=1

Change sdX to sdd, sde, or whatever your USB drive letter is.

Use dd with great caution!

As you discovered Ubuntu 16.04 Startup Disk Creator no longer provides an option for persistence storage for a Live Boot USB Flash Drive. But mkusb does provide this feature and it works well even for creating a pre-release Ubuntu 18.04 Live Boot USB.

For more about mkusb details read about it here.

  • 1
    1. The statement about gparted is correct for 16.04 LTS, but gparted in 17.10 and newer versions can identify the ISO 9660 file system; 2. Use dd with great caution, or use mkusb also to wipe the head end of the drive or to restore it to a standard storage device. mkusb 'wraps a safety belt around dd'.
    – sudodus
    Commented Mar 17, 2018 at 19:43
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    @sudodus 1. Like the OP I'm still on 16.04 but it's good to know 17.10 fixes gparted because when I eventually upgrade to 18.04 LTS this inconvenience will be gone. 2. We both know how wonderful mkusb is! Commented Mar 17, 2018 at 19:50

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