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After I deleted the partition on my internal HDD (only datadisk) and therefore unmounted the HDD I could not access Ubuntu 16.04 (Kernel 4.11) anymore with an error showing up
Failed to start LSB: AppArmor initialization.

My actual plan was to format the HDD to exfat so I could use it for a future dual boot for Windows as well but I did not format the HDD to exfat yet or mount it again.
The whole system should actually be running on my SSD, so I do not understand how unmounting the HDD can cause such an error...
All the recovery attempts I tried did fail until now and I can only access the boot menu and get stuck in there.

All the error messages I could find are:

  • ACPI Error: [_OSI] Namespace lookup failure, AE_NOT_FOUND (20170119/psargs-363)
  • APCI Error: Method parse/execution failed [\_SB.PAGD._STA] (Node ffff9fa6ee4d4028), AE_NOT_FOUND (20170119/psparse-543)
  • iwlwifi 0000:04:00.0: capa flags index 3 larger than supported by driver
  • Failed to start Braille Device Support
  • dev-disk-by\x2partlabel-primary.device: Dev dev-disk-by\x2partlabel-primart.device appeared twice with different sysfs paths /sys/devices/pci0000:00/0000:00:17.0/ata1/host0/target0:0:0/0:0:0:0/block/sda/sda4
  • Timed out waiting for decixe dev-sdb1.device. -> sdb1 is my HDD and then
  • Failed to start LSB: AppArmor initialization

Can anyone tell my if I did something wrong or if this error is repairable?

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    You may have more than one problem. 1) you're running an unsupported configuration with kernel 4.11, 2) your /etc/fstab probably has a mount for the partition sdb1 that used to be there, and isn't any more, 3) if you're going to share data between Windows and Ubuntu, NTFS would be a more common choice.
    – heynnema
    Sep 17, 2017 at 13:25
  • It took some time until I started to work on this Laptop again and somehow I missed that there were answers, so sorry for my delay! But thanks a lot heynnema for your help, NTFS is a good idea actually! I will check out the mount partition. The problem is just that I cannot even boot into Linux anymore as soon as I format the HDD. With my last try this week the same error just happened when saving data on the HDD. I will check the HDD for errors first.
    – Li12
    Feb 23, 2018 at 12:51

1 Answer 1

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This error --"Timed out waiting for device dev-sdb1" means that it is trying to mount the HDD, and failing because it can't.

Edit the file /etc/fstab, comment out the reference to the HDD.
You should now be able to boot.

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  • It took some time until I started to work on this Laptop again and somehow I missed that there were answers, so sorry for my delay! But thanks a lot. I will try to see if I can change the reference for the mount. Thanks for your help.
    – Li12
    Feb 23, 2018 at 12:56

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