hello everyone,
i searched the application switch section for diskeeper and found the following

START "" /WAIT "DKprofessional.exe" /s /a /s /v"/qb"

this works perfectly. my doubt is can i use the same in runonceex without any errors as the 2nd and 3rd quotation marks are also significant in the above. so if my runonceex.cmd is as follows will it work?

REG ADD %KEY%\015 /VE /D "Diskeeper 8" /f
REG ADD %KEY%\015 /V 1 /D "%sysdrive%\install\applications\Diskeeper\DkProfessional.exe \"/s /a /s /v\" /qb" /f

if the above is wrong please tell me how to go about with the switches . thanks

I use this with no problems =>

REG ADD %KEY%\055 /VE /D "Diskeeper 8.0.478.0" /f
REG ADD %KEY%\055 /V 1 /D "%systemdrive%\install\Diskeeper\DKprofessional.exe /s /a /s /v/qn" /f

You could also start the installer manually and obtain the .msi file from your temp directory and use /qn REBOOT=Suppress. in your runonceex

Yeah, the MSI makes things simple. I run from cmdlines.txt at T-12 just using the /qb switch.

I've noticed that programs that normally want a reboot don't when run from cmdlines.txt. And those that usually ask for driver installs (daemon tools, Alcohol 120% and such) don't when installed from here also. Not all can be run from cmdlines.txt, but a lot can.