So at last I could get back to this and try to implement it. The test server has one hard drive attached with two partitions: sda1 is the Clonezilla boot drive; sda2 has several already-created images. So on the server, I mount the root of sda2 to /home/partimag. I put the server into interactive-client mode and then immediately exit to the command line. There I replace the generated /tftpboot/nbi_img/grub/grub.cfg with a version with the modifications to ocs_live_run as follows: menuentry "Clonezilla...
So at last I could get back to this and try to implement it. The test server has one hard drive attached with two partitions: sda1 is the Clonezilla boot drive; sda2 has several already-created images. So on the server, I mount the root of sda2 to /home/partimag. I put the server into interactive-client mode and then immediately exit to the command line. There I replace the generated /tftpboot/nbi_img/grub/grub.cfg with a version with the modifications to ocs_live_run as follows: menuentry "Clonezilla...
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Deletion of the 3/20 entry: I finally had a chance to read the prior responses more carefully and got the sense of what to try to do. I'm still dealing with some syntax errors in the modified ocs-sr command.