Upgrading TempleOS

To upgrade, you generally boot the new TempleOS CD/DVD, install on top of your 
drive, modify your files and set it to boot your new /Kernel.BIN.C by executing 
BootHDIns().  Often, your code will have to be modified to work with the new 
version.  See Change Log.  You might have to boot an alternate drive or the CD 
and modify your code until it boots okay.

See the Installing documentation.