I have a lab of 30 computers/devices that I deleted out of sccm with the intention of re-imaging them using a totally different Task Sequence. I feel like I've done this before and when the deleted devices pxe boot they have always been recognized as unknown devices and all TSes deployed to unknown devices were available.
Now these devices won't pxe boot until I manually add them to a device collection, then the only TS available is the one I have deployed to the device collection. Moreover when I try to run the task sequence it fails. The task sequence does not have a driver pack associated, it is simply an OSD with apps and I have used it many times on same brand/model computers.
I feel like when I deleted the computers they didn't get completely removed from the db which is causing them not to come back as unknown. Are there db table/s that I need to clean up in order to get these systems to pxe boot and come back as unknown devices?
Thanks for any insight.