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Boot stuck at "Starting Switch Root", how do I investigate?

asked 2016-11-28 03:52:54 -0500

Grégoire gravatar image

When trying to upgrade to Fedora 25 (after rebooting but before actually starting the upgrade) the boot got stuck at the line that says Starting Switch Root....

Now rebooting the computer always give me the same result. I tried getting a console with ctrl-alt-F2 but it didn't work, neither did trying to boot with an older kernel.

I can get a root shell using the recovery option in grub but I don't know how to find the problem from there.

(This looks like https://ask.fedoraproject.org/en/ques... but I don't think I'm using nouveau)

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In the grub menu, edit the kernel command line to remove quiet and rhgb, then try booting it. Hopefully that will give you more info on what is actually failing.

ssieb gravatar imagessieb ( 2016-11-28 15:45:41 -0500 )edit

If you can get a root shell with the rescue initramfs, iirc that means you got the root filesystem mounted too. Read the journal and logs from the previous boot using the root shell to investigate.

randomuser gravatar imagerandomuser ( 2016-11-29 08:47:41 -0500 )edit

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answered 2016-12-28 10:11:20 -0500

updated 2017-01-03 07:34:52 -0500

I've had the exact same scenario happen to me and wasted 2 days trying to figure out what the problem was. For some reason, for now, the upgrade to F25 seems to be stuck for me and i can't figure out why. If you want to get rid of the boot freeze issue try this: 1. start pc;2 at grub, select the kernel you want to boot;3 edit the selection (e ) and add a 5 at the end of the line begining with linux16;

The system should now boot normally. After you are able to login, remove the link /system-update from root and you should be able to get rid of the boot freeze issue.

Haven't been able to figure out why this happens. I retried the upgrade again but it stopped at the same step (starting root switch). It seems that the os is not able to mount the root partition when that system-update flag is present :(

EDIT: i was finally able to update my workstation using the GNOME software. I was little disappointing that i was not able to use dnf. I have been using it since F20.

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Asked: 2016-11-28 03:52:54 -0500

Seen: 16,485 times

Last updated: Jan 03 '17