It didn't work.
Here's the steps to reproduce my problem:
1. Wipe out the hard drive (Used your CD to boot without extensions then fdisk on /dev/sda and used option "o" and "w" to override it with a DOS partition).
2. Boot tiny core 12.0 with CD. Clicked TC Install icon.
3. Selected Frugal and Whole disk and sda (only option) as target disk, left "install boot loader" checked.
4. In boot options I left the box blank.
5. I checked all options for additional items to install then clicked proceed.
Then removed CD. Tiny core can boot from hard drive.
Then I selected Apps.
The box next to TCE always shows "/mnt/sda1/tce/optional"
So I attempt to download xchat extension. Once downloaded, a new yellow-orange X icon appears at bottom of screen next to the rest of the icons for the xchat program. As soon as I reboot the computer (by clicking exit then clicking reboot and ok), the system reboots, but the new application disappears (no more yellow-orange X icon).
So I tried to debug further by opening a shell and seeing where my hard drive mounts to and when I execute this:
mount | grep sd
I see:
/dev/sda1 on /mnt/sda1 type ext4 (rw,relatime)
Is there something wrong with appbrowser or should I not be using ext4 filesystem or what?