Desktop tab: Mounted Volumes do not appear on my Desktop after restart

[PaulSh84]

I found the issue, that after I enabled Mounted Volumes and their icons appeared on my Desktop, not all of them show up next time after I restart the machine. My CD-ROM icon is always displayed, but my logical disks not. I usually launch Nautilus, select Other Locations and click on my Drives and they appear again on my Desktop.