I made a bootable drive with Etcher on my Mac. I followed the instructions to erase and properly partition the USB flash drive. It is MS-DOS FAT 32 with a GUID partition scheme.

When I try to boot or check for errors I get a black screen as shown below with the errors listed in the title:

[   8.608429] Couldn't get size: 0x800000000000000e
[   8.608453] MODSIGN: Couldn't get UEFI db list
[   8.626775] Couldn't get size: 0x800000000000000e

In that order. I have tried on two different USB drives so far. I made sure to eject the disk when prompted to initialize or eject after Etcher finished installing and validating the ISO. The ISO was downloaded from Ubuntu's page. It is 18.04.1-desktop-amd64.iso I am using a late 2011 Macbook Pro Laptop. Is the ISO possibly the wrong format for my device?

Also when I select the option to boot on restart I get two EFI boot options, both of which do the same thing.


2 Answers 2


I had the same issue with:

AMD Athlon 200GE Dual-core MSI B450I Gaming Plus AC

I followed this guide to install Elementary OS, should be the same with Ubuntu


Once installed I used the same nomodeset to boot into Elementary OS

Once booted in I updated the kernel to 4.19 using this guide


I had no more issues after that

  • Thanks. I will try this out shortly and update from there. Dec 8, 2018 at 20:58
  • I tried it out and I got the same error. I think something may be incorrect with the ISO or drive type I am using to boot. This is what I got. [Setparams Ubuntu Boot Edit Screen][1] [1]: i.stack.imgur.com/yWaXY.jpg . Dec 8, 2018 at 21:59

Use a live usb stick of the same ubuntu version.
Open terminal.

sudo -i
fsck /dev/sdaX

Replace 'X' with your root disk name,and then with all other drives present.
You can check it with fdisk -l.
Reboot. Remove live usb.
It should work now.

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