When you come across the error “Bootmgr is missing” in windows 7/Server 2008.
the answer is:
Load a windows cd(7/2008) for the apropriate OS and boot it, then choose “reapair my computer” , then choose command promt.(in case of HW raid, load the proper drivers first)
Type: cd recovery
Then type: startrep.exe
If you’re lucky this will solve your problems automaticaly.
In my case it didn’t so i had to do it manually, first of all when in the commandpromt enter:
if this doesn’t resolve it, make sure the right partition/disk is set as “Active”.
it has to be the small partition that goes before your main drive(C:)
go back to the command prompt and enter diskpart
now enter list volume
look for the said volume (it’s about 100mb)
then make sure none of the others are marked active, select them by using
“select volume “.
Then type: Inactive
now you shoud be able to boot without problems.