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Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

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What happens with optical drives (lemmy.dbzer0.com)

submitted 1 year ago by Kongar@lemmy.dbzer0.com to c/linux@lemmy.ml

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I’m trying to understand what happens with optical drives in general, and failing.

Backstory: I still have a SATA burner mounted in an expansion bay. I’ve been upgrading my pc for 15+ years and that bad boy is still kicking through all the upgrades. I bought a brand new ssd. When I went to plug it in, I realized I had run out of sata ports on my motherboard. I do have a usb portable optical drive so I really don’t need the old burner. So I unplugged the optical drive and plugged in the new ssd into the same port.

Now I knew something would break upon boot, but I didn’t care - let’s learn. It of course hangs on boot. If I undo the optical drive/ssd swap, it boots fine. Manjaro btw. But what file knows about that optical drive that needs to change? It’s not fstab-that’s just regular hard drives (no opticals listed there). Everything says that optical drives get mounted at /dev/sr0, but clearly something somewhere else needs to be deleted ala fstab file style. But what file?

I tried searching optical drive on the arch wiki and didn’t find what I was looking for with a quick skim (maybe I need to read it closer again)

Anyways thanks!

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[–] jsveiga@sh.itjust.works 5 points 1 year ago (1 children)

When you say "login screen" is it graphical or the console?

If it's graphical, can you drop to the console (ctrl+alt+F1 ?) and try to login there? And with a brand new user (create one without the ssd) or root? Just to check if it's something triggered by a user config pointing to the drive.

Also, is your fstab using UUIDs or /dev/sdXn?

After the hang, if you boot without the ssd, can you then find any errors in the message log from the previous boot?

[–] Kongar@lemmy.dbzer0.com 1 points 1 year ago

I’ll have to try this

I tried logging into gui and it hangs. While I’m at the spinning cursor of death, I cannot break out into a console. I’ll try the console first.

I suspect you are onto the issue here - something in user config is looking for that optical drive and failing.

Fstab has just hard drives, and it’s by uuid.

I’m at work now, I can boot into manjaro by unplugging the drive - I’ll check the logs and see if there’s any clues there.