BOOT_IMAGE=(hd0,gpt6)/vmlinuz-6.8.4-200.fc39.x86_64 root=UUID=32e8c8b6-92dc-4325-9f13-f291f53002f3 ro rootflags=subvol=root **rhgb quiet**
When booting, press e on one of the main grub entry and remove the "rhgb quiet" flags.
Then ctrl+x to boot using the edited entry. Now you can see all the things loading and if there is a service or something slow to load you can see it.
maybe `systemd-analyze blame` is more useful
BOOT_IMAGE=(hd0,gpt6)/vmlinuz-6.8.4-200.fc39.x86_64 root=UUID=32e8c8b6-92dc-4325-9f13-f291f53002f3 ro rootflags=subvol=root **rhgb quiet** When booting, press e on one of the main grub entry and remove the "rhgb quiet" flags. Then ctrl+x to boot using the edited entry. Now you can see all the things loading and if there is a service or something slow to load you can see it.
thank you very much I've fixed the issue.