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Describe the bug
When installing Big Sur to the hard drive, progress bar reaches about 50% then screen blanks and reboots. Apple logo appears for 1 min without progress bar then T480 reboots and repeats Apple logo/no progress bar until power is turned off.
Screenshots
If applicable, add screenshots to help explain your problem.
Device (please complete the following information):
macOS Version: Big Sur
EFI Version: 1.2.2
EFI type (regular or HeliPort): regular
Additional context
Used EFI as is on t480 with most recent bios fw, i5-8350u, 620 gpu, 16gb ram, 512gb nvme ssd, 1920x1080 screen. Bios settings as described in Read.me.
Note: Please use the Discussions tab if you have any ideas or a question.
Describe the bug When installing Big Sur to the hard drive, progress bar reaches about 50% then screen blanks and reboots. Apple logo appears for 1 min without progress bar then T480 reboots and repeats Apple logo/no progress bar until power is turned off.
Screenshots If applicable, add screenshots to help explain your problem.
Device (please complete the following information):
Additional context Used EFI as is on t480 with most recent bios fw, i5-8350u, 620 gpu, 16gb ram, 512gb nvme ssd, 1920x1080 screen. Bios settings as described in Read.me.