The PRIMERGY TX1330 M1 server, after removing the disks for maintenance, the proxmox operating system stopped loading. In the configuration there were 5 disks in jbod mode, 1 disk is used to install proxmox, the other 4 disks were given to truenas. After selecting boot options [proxmox] the system does not boot.
That raises some questions. 
- When you say the disks were removed for maintenance... was that with the server shut down and powered off first?
- Are all of the hard disks in that system of the "hot swap" variety? If not, was the server unplugged before removing them?
- After the maintenance was over, were the disks put back into exactly the same positions there came from?
- The problem you're mentioning sounds like they weren't, but that's just a guess
- When you say "the system does not boot", what does it do instead?
- What is that screenshot of? It looks like lsblk output, but if that's the case then what's generating it?