Solution: There never was a second drive. It must have been a partition that got wiped with the install, but there's only the NVME in there. Sorry, guys. I dig around in my innards very frequently and just thought I was mounting a second drive this entire time. Hooray for backups.

reinstalled Mint and my second drive is absolutely invisible to everything. I can't mount what I can't see. I'm thinking of unplugging it and plugging it back in just because I'm out of ideas.

What could have caused a drive to become invisible after a reinstall?

Edit: Checked bios. All security disabled. Using AHCI and UEFI (tried CSM). I don't really know what these things mean, I just know things were working properly before I reinstalled mint so I'm puzzled why it could be a BIOS issue.

Current lsblk:

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[–] 4 points 2 months ago (1 child)

Check cables. Verify whether or not it's even spinning up. Try a different sata port. Try a different power plug. Try the drive in another machine.

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  • [–] [S] 5 points 2 months ago

    Yes, thank you for this, motivated me to pull the drive only to find out to my confusion that it wasn't there... mostly likely I was mounting a partition this entire time. Good news is that I have n 8-year-old 4TB and and 12-year-old 3TB I might as well consume.

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