Path to your startup disk

How in applescript would I get the path to a custom application located in the startup disk directory, for example

Tell application “STARTUPDISK:myprogram.app:”

Thanks in advance!

path to startup disk
set myApp to ((path to startup disk as text) & "Myapp.app")

You can also locate the application asking for its “creator type” (if it does own one):

tell application "Finder" to application file id "sfri" as text
--> "diskname:Applications:Safari.app"

Thanks for the help, but this launches and then my custom applescript commands don’t work, it gives me an error -

set myApp to ((path to startup disk as text) & "BHI-Skipjack.app")
tell application result to run
	set arg1 text to "ABC"
end tell