Figured it out. Dumped the cache on the controller and added back the missing array but did not initialize it. Changed the boot device in the controller bios to the "new" array; somehow the old VD1 became VD0 and the re-added VD0 became VD1, and rebooted. System came up fine. No idea what caused it but at least now it is back working. Regards
Dell 7500 PERC 6/i controller, poweredge expanded RAID with SSD-SATA boot device and SATA RAID 1 data drives. On a reboot from an Acrobat patch system stops booting after Poweredge loads and present error -   there are offline or missing virtual drives with preserved cache, press any key to enter into the configuration utility. Given no choice I enter into the configuration utility. Initially the ssd drive showed up as a foreign configuration but after numerous attempt to import the configuration I finally chose clear and followed an article about adding it back as a RAID 0 but without initialization but that didn't work either. Don't know if the drive is dead or what since I can't get out of BIOS. Always goes to the error. I am assuming I have to clear the preserved cache but don't want to lose the mirror. Posted same problem yesterday but it did not show up in the forum so I don't know if there is a filter or something. Need help - system is for high-end FEA analysis and is needed. Thanks in advance
T7500 won't boot - there are offline or missing virtual drives with preserved 
cache