Try edit your /etc/inittab :
On top of the file should have this line:
# The default runlevel.
id:5:initdefault:
Yout id must be 5, if different change it.
Also check your /etc/rc5.d folder for unusual symlink.
I did a HDD install from the Knoppix linuxtag 3.4 DVD, removed all knoppix-specifics and replaced them with official debian packages & kernel 2.6
Now the system won't complete the boot process on its own - after mounting the root filesystem and loading the modules, it initiates a shutdown.
I'm not sure if this is being called from a shutdown script, or what's going on.
I have to start in single user mode and issue "init 2" to get it to work.
Has anyone else seen this, and if not , I would still appreciate some insight.
Try edit your /etc/inittab :
On top of the file should have this line:
# The default runlevel.
id:5:initdefault:
Yout id must be 5, if different change it.
Also check your /etc/rc5.d folder for unusual symlink.
Thanks I have tried that, but am still at a loss. The system begins to boot, then switches to runlevel 0 on its own, and halts.
I can only get it to boot by entering single-user mode and issuing 'init 2' .
I have since reinstalled knoppix using knoppix-installer, and upgraded with debian-specific debs. Exact same problem..
What could be causing the system to enter runlevel 0 on its own, during boot? My hdd is clean, and it's not being fsck'd , and nothing out of the ordinary appears to be happening except for this.
I believed there is some services that not suppose to run in your init.
Try list your /etc/rc5.d and /etc/rcS.d, and post it here.

Dell Poweredge R630 2x Xeon E5-2680 v3 2.5ghz 24-Cores / 64gb / Raid / 2x 1Tb
$374.99
Dell EMC PowerEdge R440 Xeon silver 4215 2.5GHz 16 GB ram 2x 550W PSU No HDD
$275.00
Dell PowerEdge R730XD 28 Core Server 2X Xeon E5-2680 V4 H730 32GB RAM No HDD
$378.93
Dell PowerEdge R530 2x E5-2630v4 H330 iDRAC8 Port Card Riser No PSU/RAM/HDD
$99.99
Dell Poweredge R630 2x Xeon E5-2680 v3 2.5ghz 24-Core | HBA330 | No RAM or HDD
$149.99
Dell Poweredge R730xd 12LFF 2*2660v4 4*1Gbe h730 2x 750W Server CTO
$248.00
Dell PowerEdge C4130 1U AI GPU Server | 2x E5-2690 v3 | 64gb Ram | 2x 1600W
$524.99
Dell Poweredge R730xd 12LFF + 2SFF 2x10/1Gbe H730 Mini 2x 750W Server
$348.00
Dell Poweredge R630 2x Xeon E5-2680 v3 2.5ghz 24-Cores | 32gb | HBA330 | 2x 1...
$324.99
Dell PowerEdge R730 Server 2x Xeon E5-2630 V4 64GB DDR4 2TB HDD Rackmount
$489.99