SBS 2003 on RAID 10.. Had a catastrophic loss of registry hive with no backups. Chkdisk and bootfix no help. Would not boot. The \windows\system32\config directory is gone. No images in \windows\repair. But successfully installed Server 2003 on a standalone HD. Can mount original C drive and access directories with user shares and Exchange store. It looks like a complete re-install is required. Don't know what happened. Maybe write cache enabled and had a glitch, but it was on a UPS.
Anyway, if I copy the Exchange files off to a CD, after re-installing SBS, can I (how do i) hook up a fresh install of Exchange to the existing store? Any way to recover AD and users/computers?
Any other ideas on repair? The installer won't install over the existing Windows installation because it says it's corrupted.