How to fix long system boot after changes via gparted?

Question

linux

There are 2 windows10 and linux mint19 systems installed on the SSD disk. Everything worked great.
I decided to move 20GB from the windows partition to the /home partition, and also increased the volume of the swap partition from 3 GB to 8 GB.
After these manipulations, mint began to load not for 20 seconds, but for more than a minute. And once (so far) the system even began to freeze (slow down) during operation. I have not seen such problems before.
Please tell me where to dig.

Answer 1

The thing was that after my manipulations with the partitions, the UUID of the swap partition changed, but the old value remained in the configuration.
To fix the situation, I found out the current UUID of the swap partition with the blkid command and fixed it manually in the /etc/fstab file

Answer 2

Well, look in the logs or look during the download process on what is argued?

Answer 3

Do a systemd-analyze plot > /tmp/a.svg and see what exactly is taking so long to load.