Yellow won't boot after with M.2 installed

Hi - new to HA with a Yellow and CM4.

I bought a pulled 512gb m.2, did a shut down and popped it in.

However the unit never came back online after plugged back in. There was traffic showing on the ethernet port. I left it for about 5 minutes.

It came back up quickly once removed.

I didn’t see I had to wait for any formatting processes before the system would come up. I don’t have any hardware to test or format it with.

Did I miss something?


did you ckeck if the disk is supported here FAQ – Home Assistant Yellow

Nope! Thanks!

But should unsupported = no boot?

Will shop based on recommended model

Sincerely don’t know, I don’t own a Yellow to try.
I hope you can troubleshoot the issue.

Thanks - my drive was on the naughty list so I bought one that was on the nice list.

Just very rarely experience a situation where adding hardware to a working system causes it not to boot.

‘Nice list’ drive worked as easy as I expected HA code to run. Need to remember to read more FAQ’s before versus after.

Hi Jason, please take the time to mark the solution as the answer, you do that by selecting the three dots under the post:


Then select the check box:

By doing so this can be useful to other users as well and prevents that someone else steps in and still tries to help you.

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