What is this?

 17.537s dev-sda2.device

systemd-analyze blame

     18.346s dev-sda2.device
     17.472s systemd-journal-flush.service
     16.439s [email protected]
     12.998s dev-loop3.device
     12.974s dev-loop4.device
     12.941s dev-loop5.device
     12.934s dev-loop1.device
     12.910s dev-loop0.device
     12.882s dev-loop2.device
     11.276s systemd-udevd.service
      9.327s [email protected]
      6.983s NetworkManager-wait-online.service
      6.396s apt-daily-upgrade.service
      3.819s udisks2.service
      3.710s NetworkManager.service
      3.630s snapd.service
      3.331s apt-daily.service
      3.106s accounts-daemon.service
      3.046s ModemManager.service
      2.951s plymouth-start.service
      2.678s grub-common.service
      2.364s snap-ubuntu\x2dmate\x2dwelcome-169.mount
      2.342s snap-core-4917.mount

    mount: /: /dev/sda2 already mounted on /.

I would like to delay it until after my computer has booted up to speed up my boot time.

  • 1
    I understand that it is output of systemd-analyze blame, but could you please include this information in question. Also please include output of mount command. dev-sda2.device may correspond to root partition or home partition, they need time to be mounted and checked for errors with fsck (like CHKDSK in windows). And why you opened new question, based on previous one?
    – N0rbert
    Commented Jul 18, 2018 at 9:18
  • 1
    @NObert My question is not based on a previous one. It's a totally different issue.
    – fixit7
    Commented Jul 18, 2018 at 12:01
  • 1
    See askubuntu.com/questions/948748/… as to what dev-sda2.device is.
    – Rinzwind
    Commented Jul 18, 2018 at 12:03

1 Answer 1


You can't delay this until after booting.

sda2 is your Root Partition ("/") so that means this device is the Root of your Entire OS.

The Task that takes so long is mounting this Partition so it can be used.

But it seems that this takes too long, it could be a Driver/Partition Failure (errors shown with fsck ( @N0rbert ) ), slow HDD, something else. We don't have enough information to help for that.

  • What additional info do you need?
    – fixit7
    Commented Jul 18, 2018 at 17:54

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