Fix systemd-journal-flush.service gobbling boot time

Found from https://forum.peppermintos.com/index.php?topic=7561.0

systemd-analyze blame

sudo journalctl --vacuum-time=2d

journalctl --verify

journalctl --disk-usage

After reboot

dmesg | grep -i ahci | grep -i Gbps

dmesg | grep -i sata | grep -i 'link up'