Shuts down on startup

[SpruceFan]

Simon,
I guess that we are joined by something other than a love for classical music!

Hoping to provide more grist for your mill, I ran the command string in your just previous post and received:

mikemcone@Salle_Favart:~$ ls -l /volume1
total 564
-rw------- 1 root root 575914 Dec 20 2020 @afpd.core.gz
drwxr-xr-x 1 root root 22 May 19 16:48 @appconf
drwxr-xr-x 1 root root 22 May 19 16:48 @appdata
drwxr-xr-x 1 root root 22 May 19 16:48 @apphome
drwxr-xr-x 1 root root 22 May 27 17:28 @appstore
drwxr-xr-x 1 root root 22 May 27 17:28 @apptemp
drwx------ 1 root root 0 May 19 14:45 @autoupdate
drwxr-xr-x 1 admin users 136 May 19 14:28 @database
drwxrwxrwx+ 1 root root 106 May 26 18:12 @eaDir
drwxrwxrwx+ 1 root root 40 Nov 4 2021 homes
drwxrwxrwx+ 1 root root 56 May 27 13:09 MinimServer
drwxr-xr-x 1 root root 88 Dec 31 1999 @S2S
drwxrwxrwx+ 1 root root 288 Jun 5 10:00 Salle_Favart
drwxr-xr-x 1 root root 0 Jun 5 13:15 @synoconfd
drwxr-xr-x 1 SynoFinder SynoFinder 26 Mar 30 2021 @SynoFinder-etc-volume
drwxr-xr-x 1 root root 84 Sep 18 2019 @SynoFinder-log
drwxrwxrwt 1 root root 34 Dec 31 1999 @tmp
drwxr-xr-x 1 root root 12 Sep 18 2019 @USBCopy
drwxr-xr-x 1 root root 102 May 26 18:12 @userpreference

I have another Synology NAS running Minimserver with no problems. It is a DS 716+ with an Intel Celeron N3150 processor. The NAS that's having the problem has an Intel Celeron J3455. The second is quite a bit newer. Both are running the same version of DSM.