califfo1975:
I am a bit unclear about what you are attempting, even after reading the thread you linked. Your reference to "before SL I was able to launch the aht from the hard disc during the boot but now it is no longer possible." I am not aware that launching AHT from the HDD during boot was ever possible, so that confuses me.
AHT is included on the install DVD on computers that came with the installer on DVD. In computers that came with installers on CD, the AHT is on a separate CD. This line in your linked thread adds to my confusion:
If i can run it only from the dvd rom, the day this latter will fail i will have no more hw test possibilIty though...
AHT on DVD will fail if your HDD becomes damaged or unreadable, or lost, or if your optical drive fails. As far as I am able to determine, unless you installed AHT or a separate partition on your internal HDD and boot directly from it, you were never able to run AHT from your internal HDD.
That said, my present knowledge does not exclude other possibilities, and I am open to learning new options.
😉 cornelius