What hardware is this installation done on? Is it partitioned to do
RAID?
I see some errors that possibly indicate a hardware issue:
Oct 22 17:01:12 ubuntu grub-installer: info: Running chroot /target
grub-install --force "/dev/sdc"
Oct 22 17:01:12 ubuntu grub-installer: Installing for x86_64-efi platform.
Oct 22 17:02:59 ubuntu grub-installer: show_order(): Input/output error
Oct 22 17:02:59 ubuntu grub-installer: Could not delete variable: Input/output
error
** Changed in: grub-installer (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1799267
Title:
Error and crash during installation of 18.04
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