POST startup hung on Supermicro X6DVL-EG2 with 0078 amibios diagnostic

[tamone]

Hello,

I have this super strange behavior where I install a new OS on a blank SATA hard disk on a Supermicro X6DVL-EG2 (2005!) motherboard. The PXE boot and OS installation is ok, but on reboot, the POST hangs just after hard disk detection (SMART status shown) with a diagnostic number 0078 in the bottom right hand corner of the screen.

I first thought it was due to a too large disk (2TB), but the same occurs with a 80GB one. I can't even go to BIOS setup, unless I remove all hard disks in the system.

status 0078 is not mentioned into Supermicro X6DVL-EG2 User's manual and I found an ami bios 78 status saying "Display CMOS error messages".

Best regards

 

[tamone]

SOLVED !

ok. I have been stuck on this problem for a few hours and I finally found a way to relieve it.

The solution was to change a settings in the BIOS (taking out the disks first, to get there !). The parameter is "LBA/Large Mode" and it has to be changed from "Auto" to "Disabled".
It is in the "Advanced" menu -> IDE Configuration, selecting the channel where the disks are seated: "Primary IDE Master" and also "Secondary IDE Master" if you have two disks.

It is counterintuitive, because the disk is detected as LBA "capable", but this settings limit to 137GB disks. For larger disk, 48-bit LBA additional controller card must be installed on the motherboard, according to the board user's manual. For big disk you would want to activate this settings, but you should not obviously.

I do not really understand why it blocked before and why this solved after...

Thanks
Francois

 

[unclouded]

The solution was to change a settings in the BIOS. The parameter is "LBA/Large Mode"

Thank you SO much. I was about to give up on this. I also have a 2TB drive that now boots!