[Info-vax] Issues with burning latest Hobbyist VAX/VMS ISO to CD?

[hb]

For VMS the only difference between an ODS2 disk and an ODS2 CD is the
"readonly" attribute of the CD. And if you have an image of a bootable
CD, you also have an image of a bootable (readonly) disk. It doesn't
matter whether you copy the image to a CD or a disk. But it does
matter that the VBNs of the image file are copied one-by-one to the
LBNs of the CD and that they are not embedded, as a file, in another
files system, the ISO 9660. For VMS the copy results in an ODS2
formatted medium which is still bootable. As said before, the image is
not a so called ISO image. If someone named the image file .ISO, she/
he didn't care or simply didn't understand. A .IMG or .DSK would have
been a better file type.

A bootable VMS distribution CD is not bootable as specified by El
Torito. A VMS disk and CD are bootable if there is a boot block, for
VAX and Alpha LBN 0, on the disk. 512 byte blocks, as we know, which
the CD reader has to support.