Found it.. Google strikes again. Sorry false alarm. http://www.scconfigmgr.com/2014/06/23/enable-f8-command-line-support-for-legacy-boot-images-in-configmgr-2012-r2/
From: [email protected] To: [email protected] Subject: [mssms] Enable WINPE testing on old boot images post SCCM R2 SP1 (Outside of Console) Date: Thu, 1 Oct 2015 14:36:29 -0500 Dear my favorite SCCM admins at myitforum, As we all know you lose customization tabs on older boot images post upgrade. With that being said I noticed I cannot use the "F8 Testing Option" anymore on these images during OSD. Does anyone know how to manually add this testing option outside of the Configmgr console? I was hoping to find a quick win on google where there would be a process to mount the image and apply some component or modification. Thanks,
