I have LinuxMint 18 KDE as my main OS. I wanted to try Zorin OS 12 on another partition, like I had many times before. And so I did, but, when I tried to get to LM, I get welcomed by the emergency mode. I have opened the journalctl -xb as it told me and I got a snapshot of the problem:

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I can not provide a text log because it is gone after restart and I can not enter in the main OS by pressing Ctrl+d. I think it is because the two partitions are next to each other (/dev/sda6 is LM and /dev/sda7 is Zorin) and although i did not change the size of the partition, I think the installer musthave messed that up.

L.E. error in text

Also the error in text:

systemd[1]: dev-disk-by\x2duuid-b7e7e9fc\x2d17a2\x2d4308\x2daf2f\x2de941f3c86400.device: job dev-disk-by\x2duuid-b7e7e9fc\x2d17a2\x2d4308\x2daf2f\ ...device.start failed
Timed out waiting for device dev-disk-by\x2duuid-b7e7e9fc\x2d17a2\x2d4308\x2daf2f\x2de941f3c86400.device
Subject: Unit dev-disk-by\x2duuid-b7e7e9fc\x2d17a2\x2d4308\x2daf2f\x2de941f3c86400.device has failed
Unit dev-disk-by\x2duuid-b7e7e9fc\x2d17a2\x2d4308\x2daf2f\x2de941f3c86400.device has failed

The result is timeout

  • Have you tried booting to a live os and checking if that UUID exists? Nov 19 '16 at 21:47
  • Total noob here, please can you tell me how to do that step by step? I am on Zorin now. Can I do it from here or I need to enter live mode? Nov 19 '16 at 21:56
  • At root run blkid Nov 19 '16 at 22:35
  • sudo blkid [sudo] password for relar: /dev/sda1: LABEL="System Reserved" UUID="78982D58982D15E2" TYPE="ntfs" PARTUUID="4a2af2c2-01" /dev/sda2: UUID="AC4236254235F4A4" TYPE="ntfs" PARTUUID="4a2af2c2-02" /dev/sda3: UUID="2AC0D813C0D7E35D" TYPE="ntfs" PARTUUID="4a2af2c2-03" /dev/sda5: UUID="54637fab-077e-4797-a808-3c06f0af2e50" TYPE="swap" PARTUUID="4a2af2c2-05" /dev/sda6: UUID="31a5fade-2f57-4792-8271-919f65b6ec0a" TYPE="ext4" PARTUUID="4a2af2c2-06" /dev/sda7: UUID="04c5aca3-934b-4ee0-9f8d-6920e8c83d86" TYPE="ext4" PARTUUID="4a2af2c2-07" Nov 19 '16 at 22:46

I have managed to solve my problem by doing the following:

  • I booted into another OS (this can be done also with a LiveCD)
  • I went to /etc/fstab (on /dev/sda6 -> the root filesystem i wanted to boot) and saw that the UUID that didn't load (starting with [b7e7e9fc-...] was on the partition I had installed Zorin on and it had LM Cinnamon on it (now /dev/sda7 but with a different uuid as seen in the comments above). As such in /etc/fstab it was market as /cinnamon
  • I placed a # in front of the line to be ignored at boot
  • LM KDE system booted normally (/dev/sda6)

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