Hi all,
A while ago I've started experimenting with a solution that would not require docker and/or a system running linux,
but just a simple image that you can boot on your physical/virtual system and create the loader from there.
I started with the plain disk image of 200MB size and tried to fit all in this image. As always first partition of the image is the synoboot1,
second synoboot2 and third one (synoboot3) is tinycore. Tinycore is a simple linux distribu
The HBA, MPT3SAS is your case, needs some time to spin-up and scan the bus for drives. Your system is most probably, not configured to boot from this HBA or the BIOS is not enabled on the HBA so this disk initialisation process happens during the module load and this runs in parallel with the DSM boot process and there is a race condition. If the initialisation finished on time DSM will identify the disks if not it will fail into junior with the error you see.
So IMHO, enable boot from