Bootable Mojave doesn't appear as choice on external start up disc
Dear All,
It seems that I have successfully created an external hard drive containing Mojave bootable media, or so Terminal tells me, but when I try to boot from that external Mojave drive, it does not appear in the selections menu --only Catalina appears after I hold down the option key and try to start from Mojave. What am I doing wrong, or is Catalina muddying the waters. Catalina will not allow me to install Mojave directly because it says the installation disc is too old, so I have to go through Terminal. It erases the external hard drive completely and creates a bootable Mojave,, but I'm wondering if that's the problem -- it is no longer formatted as a journaled disc, but as an installation disc. How can I overcome these problems? Thanks.