Sorry, I did not make it clear. This is on TinyCorePure64-7.0. Right after booting from ISO, I goto Apps -> Select fastest Mirror -> search for firefox. I select firefox_getLatest.tcz. I select "Download + Load" option and click Go. TCE: path shows as /tmp/tce/optional. After it says OK, I open terminal and type firefox_getLatest.sh. The output of this is what I attached in my previous post.
I am not adding firefox.tcz to OnBoot.lst as I guess should not matter as I am using this machine for just one boot cycle. In the sense, boot and load TinyCore from any computer, go to website, do something, shutdown computer.
I just repeated the same steps now, and I get this new message (I sweat I had not seen that before):
grep: /etc/sysconfig/tcedir/onboot.lst: No such file or directory
Doing: tce-load -i firefox shows firefox is already installed!