Hi, zaydiscool777.
Welcome to the forum.
What is meant by “frugal”?
That's our lingo, it's just the default way how TC is installed.
The other methods are USB-ZIP and USB-HDD.
They are designed for some really quirky old computers and are "frugal" in a sense.
The files are packed in a special read only squash file system just like an .img file in windows system.
When you need them, you load them.
How do I install tc-install.tcz beforehand? Am I supposed to on Windows?
The installer was designed to run on TC system, it won't run on Ubuntu.
It's just a shell script that makes legacy BIOS only bootable media.
If your machine doesn't support CSM and requires UEFI, then you could follow the
syslinux tutorial or the
grub2 one.
Are there any recommended bootcodes?
Examples, to setup your locale
lang="zh_TW.utf8"
Timezone
tz="UTC-8"
Multiple multiple virtual terminals
multivt
How do I install if it doesn’t have …/{tce/cde}?
Either you mkdir your way out or run this when you have successfully booted
tce-setdrive
This might not be related, but how would I reopen BIOS once the bootloader is set to hdX?
It depends on your motherboard, but usually by holding "Delete" whenever you power up your machine.