Install failed on Dell XPS 9550

Failure to install Zorin 16 Core on my Dell XPS 9550. This problem matches the one described here

The following error appears before the installer GUI loads:

Failed to open \EFI\boot\? - Invalid Parameter
Failed to load image \EFI\boot\?: Invalid Parameter
start_image() returned Invalid Parameter
  • Flashed thumb drive using Rufus (GPT, UEFI, FAT32), also tried using Etcher.
  • Verified UEFI settings match Dell documentation (ACHI, Secure Boot on).
  • No other OS on target drive.
  • I am able to load Zorin 15.3, presumably because it has compatible bootloaders included.

It appears to be a problem specific to Dell UEFI and the latest bootloaders that were included in the Zorin 16 image. I tried workaround 1 and 2 in the above link (manually set target bootloader in UEFI, and tried stock bootloaders from vanilla Ubuntu 20.04 image); not willing to try workaround 3. Workaround 2 gets me to the black screen where I can select the type of startup run I want (normal, safe drivers, or Nvidia), but upon selecting any one of those options I only get a black screen and I can only do a hard shutdown.


Thanks for letting us know about this issue! We have now issued a fix for it: