I'm trying to install the latest version of Linux Mint (22.2) on my Lenovo IdeaPad 3, but my BIOS isn't recognizing my USB drive. The only boot option showing up is the Windows Boot Manager. I've turned off fast boot and secure boot, and confirmed that USB boot is enabled. Interestingly, I was able to boot from the USB just last month with Linux Mint 22.1, so I'm not sure what's changed. I've also tried different USB ports and switched the formatting from MBR to GPT, but nothing seems to work.
3 Answers
Have you tried pressing F12 or Fn+F12 when you power on your laptop? That should bring up the boot menu. I tried that on mine, but sometimes it takes a couple of extra presses. Just make sure the USB is connected before you turn it on.
I suggest checking the migration page on our wiki for tips on troubleshooting USB boot issues. Also, be careful where you download your ISO files—always verify checksums for security. Little steps like these can make a big difference!
On my laptop, I noticed that the legacy boot option wasn’t labeled directly as such. Instead, it was set to UEFI/CSM. I had to change it from CSM Only to UEFI to get a few different Linux distros to install correctly. You might want to check for something similar in your BIOS settings.

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