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unable to mount root fs on unknown block(0,0)
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skaman814
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Joined: 11 Nov 2017
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PostPosted: Fri Nov 17, 2017 5:57 am    Post subject: unable to mount root fs on unknown block(0,0) Reply with quote

Hi, thanks for taking a look :D

This is my first manually configured kernel, and I'm getting the error from the subject line.
I found this troubleshooting guide: https://wiki.gentoo.org/wiki/Knowledge_Base:Unable_to_mount_root_fs

I've been able to verify everything except whether or not the controller chipset has been configured.

I'll continue the search on my own, but if anyone can at least point me in the right direction it would be greatly appreciated.

I'm using a Samsung 500 GB evo ssd


Thanks in advace!
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NeddySeagoon
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PostPosted: Fri Nov 17, 2017 8:42 am    Post subject: Reply with quote

skaman814,

Make friends with wgetpaste.
Post the output of lspci, your partition table, annotated with filesystem type and purpose and a link to your kernel .config.

Oh, your grub.cfg will be useful too.

unknown block(0,0) means that you have a bit missing to control the HDD, so the kernel cant see it.

Is your Samsung 500 GB evo ssd a SATA or a nvme device?
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Computer users fall into two groups:-
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those that have never had a hard drive fail.
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skaman814
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PostPosted: Fri Nov 17, 2017 5:25 pm    Post subject: Reply with quote

Thanks NeddySeagoon!

The SSD is a SATA device

lspci: https://bpaste.net/show/2be2e8a50804
parted print: https://bpaste.net/show/51f5cae45a65
.config: https://paste.pound-python.org/show/jpYfFziOvczAx769RL7G/
grub.cfg: https://paste.pound-python.org/show/DPBZXz3ytzLLPVmxEhjP/

And, for what it's worth my fstab: https://bpaste.net/show/7f8fcf49133f
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Jaglover
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PostPosted: Fri Nov 17, 2017 5:30 pm    Post subject: Reply with quote

Code:
CONFIG_SATA_AHCI=m

This is your problem. You need to build it in (it is needed to access the drive where modules reside, thus obviously it cannot be as module).
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NeddySeagoon
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PostPosted: Fri Nov 17, 2017 6:07 pm    Post subject: Reply with quote

skaman814,

anything =m when its needed to boot is a showstopper.

Without an initrd, there is nowhere to load modules from. You find yourself needing to load modules from the root filesystem than are needed to read the root filesystem that ...
The boot process has lots of circular dependencies like that, that have to be broken one way or another.

I don't see anything else than the CONFIG_SATA_AHCI=m that Jaglover pointed out.
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NeddySeagoon

Computer users fall into two groups:-
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those that have never had a hard drive fail.
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skaman814
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PostPosted: Fri Nov 17, 2017 6:32 pm    Post subject: Reply with quote

Awesome, thank you both! :D
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