How to troubleshoot?

[lmart]

curaga + coreplayer2

successful unofficially official install

1. Boot TinyCore-7.2 via YUMI usb. (Wish core2usb worked!)
2. Successfully applied Juanito's 4 commands to enable X/GUI. Thanks Juanito!
    tce-load -i Xvesa Xprogs flwm aterm wbar
    tce-load -w Xvesa Xprogs flwm aterm wbar
    xsetup.sh
    startx
3. Downloaded the "official installer" (command-line version, tc-install.sh), following prompts.

Now, 2 successful usb installs of TinyCore. However, I have yet to understand how/what to troubleshoot when things go South ... is there some boot log that would tell/help me where things didn't go as they should ...

Now, to try patrikg's method ...