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My Lenovo Thinkpad running Ubuntu 20.04 has started to take forever to boot. I read that it might be due to it trying for a long time to mount a partition that no longer exists in /etc/fstab but I'm not sure how I can verify it. My fstab currently looks like this (uncommented lines only):

UUID=31fad817-9f1c-4405-a552-8562c0e51c7d /               ext4    errors=remount-ro 0       1
UUID=E244-61F0  /boot/efi       vfat    umask=0077      0       1
/swapfile

How can I verify if this is correct? Is there anything else I can try to speed up the boot?

Fredrik Nilsson
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  • My swap file looks like this: /swapfile none swap sw 0 0 It looks like you are missing the extra required fields in a fstab entry. see also man fstab for fields required. – oldfred Jan 24 '21 at 15:52
  • Not sure what the /swapfile does, could I remove it or should I try to fill the line? – Fredrik Nilsson Jan 24 '21 at 15:55
  • I would edit fstab. and after edit sudo mount -a if no error edit is good. the swap file is now the default install with Ubuntu. It used to use a swap partition. Swap is a fallback way to prevent system from crashing when you run out of RAM. When RAM was a lot smaller, swap was used a lot. Some with lots of RAM do not use swap, but risk a crash if some process runs away. Depends on how much RAM you have. https://askubuntu.com/questions/934679/swap-partition-to-swap-file – oldfred Jan 24 '21 at 16:01

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