Hi @suman, unfortunately I was never able to resolve these issues and ended up moving off of Rockstor for my NAS, so I’m unable to test it any further right now. I had tried many different combinations of kernels and install options but kept having the hangup during boot.
Based on some similar issues by other users, I tried things like reordering/disabling various systemd options but still couldn’t get it to boot reliably. I made some progress by disabling some auto-mount points in /etc/fstab then writing a script to mount them after boot was finished but even then it didn’t always boot reliably.
I don’t think any of this really has anything to do with Rockstor, with the possible exception that it seemed like its startup script was running twice (sorry I can’t find specifics on which script since I didn’t write it down) but even disabling that didn’t really fix the problem.