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Old 28th November 2016
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jggimi jggimi is offline
More noise than signal
 
Join Date: May 2008
Location: USA
Posts: 7,977
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Windows, and some Linux systems can be installed on EFI systems with Secure Boot. If that has been deployed, there will be matching records in your hardware's EFI/BIOS boot menu.

While I don't use Linux, I have installed it once or twice, and I recall installing Ubuntu with Secure Boot. It adding a boot menu record called "Linux" which I needed to delete before I could install and boot anything else from that drive.

--- Just to set reasonable expectations ---

Test 1: booting to see if a GENERIC kernel resolves the USB hub issue. Odds of success: low, but not impossible. My guess - 5% odds of success.

Test 2: booting to see if the internal drive can be used for an EFI boot of OpenBSD. My guesses - 95% odds of success if Test 1 was successful, 5% odds of success if Test 1 failed. This means having Test 1 fail and Test 2 succeed: 0.25% overall odds of success.
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