i'm a absolute beginner in Linux so i apologize in advance for my question.

First of all I decided to switch from Windows 10 to Ubuntu. After that I tried the elementary OS distribution, which is in my opinion designed absolute beautiful.

Now, I have a problem with the boot time. After the changeover from Ubuntu to elementary OS the boot process is really slow. So after pressing the start bottom there's at first a black screen for some seconds and then appears the elementary OS logo and I don't know why I have this black screen. I already read something about a wrong UUID for the swap partition, but I have no idea how I can find out the problem or change them.

Maybe this terminal--output is helpful:

<file system> <mount point> <type> <options> <dump> <pass> / was on /dev/sda1 during installation UUID=1c5c8b29-e843-46ab-9115-ab0245414bf6 / ext4 errors=remount-ro 0 1 /swapfile none swap sw 0 0

For help or suggestions, I would be really grateful.

  • Please provide the output of: systemd-analyze time systemd-analyze blame | head -n 20 systemd-analyze critical-chain sudo blkid. And post also the complete content of fstab file (in /etc/fstab). Commented Jun 6, 2019 at 10:54

1 Answer 1


Long boot time can be caused by a lot of things.

In first place you should check systemd journal (systemd is operating system initialization program) by using journalctl -b command, which will show last system boot log.

Then you can scroll down and look at the timestamps to determine which process takes long time to be completed.

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