I think you're right mneese.
I'm going to try removing one of my data drives and attaching the SSD via SATA, to see if that solves it.
I agree that its likely a hardware issue rather than OMV. I just wish I could figure out how Debian and/or the motherboard BIOS assign drives. The SSD is not always assigned to sdi1, and I suspect that may be causing the issue. Hopefully moving the boot drive to SATA may help.
OK, moving the boot drive to SATA seems to have fixed it.
SSD is consistently detected as sda1 and we now boot correctly every time. I've no idea why booting from USB is problematic (perhaps the PC didn't like the USB to SATA adapter I was using) but its fixed now. 
Still not sure how BIOS/Debian allocates device ids, but Ill avoid using a USB boot device for now.
Hi guys!
I have been getting similar problems when installing from a USB....after install I remove the USB and it goes often to (initramfs) bloody frustrating...just checked that theory and rebooted with the install USB and OMV boots as normal?
What gives guys?
bookie56
with the install USB and OMV boots as normal
Did you do update-grub when booted as proposed some posts above?
When I checked the boot parameter it was right so how do I change what is right....?
bookie56
I understood that the server starts, if you keep the installation USB drive in.
If it boots just run update-grub from CLI. After that the server should boot without the installation USB drive.
Hi macom!
Exactly right...that is what I did and now everything is ok again....
So now I have fixed the omv-extras and then the flash memory....
Thanks guys for coming by...
bookie56
Hello, the same thing happened to me, it solves it by moving the disk in different sata connections until it worked
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