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I am running Linux Ubuntu 16.04 LTS, and I wasn't able to run my Operating System anymore after my latest update attempt. Here's what happened:
- I first ran the upgrade procedures through terminal as usual:
sudo apt-get update,
sudo apt-get upgrade,
sudo apt-get autoremove, and
sudo apt-get autoremove.
- However, I was told that
4 not upgraded, so I decided to run
Software Updateras well, and there was indeed updates available concerning
Ubuntu base. I installed those successfully, and decided to proceed with restart my system.
After the restart, my system doesn't start though. Instead, I receive the following error message:
[ 1.452270] genirq: Flags mismatch irq 0. 00000080 (nvme0q0) vs. 00015a00 (timer) [ 1.452551] iounmap: bad address ffffc90001b88000 Scanning for Btrfs filesystems Gave up waiting for root device. Common problems: - Boot args (cat /proc/cmdline) - Check rootdelay= (did the system wait for the right device?) - Check root= (did the system wait for the right device?) - Missing modules (cat /proc/modules; ls /dev) ALERT! UUID=a5ccaf22-ffde-44c2-8c59-84a851f9fd90 does not exist. Dropping to shell! BusyBox v1.222.1 (Ubuntu 1:1.22.0-15ubuntu1) built-in shell (ash) Enter 'help' for a list of built-in commands. (initramfs)
I was able to recover my system through the
+Advanced options for Ubuntu, which I opened after. There I had total of nine choices, three options for each version. I first tried the recovery version of the latest one, but it didn't work. After that, I tried the generic version of the second latest, and — thank God — that one managed to recover my system!
UPDATE: The three version I have available are the following, running from the latest to the oldest: 1)
Ubuntu, with Linux 4.4.0-3**9** generic, 2)
Ubuntu, with Linux 4.4.0-3**8** generic, and 3)
Ubuntu, with Linux 4.4.0-3**7** generic. With the second one I was able to start the system.
What went wrong? How can I fix it? Now I am afraid to update my system :-( Please help!!!