“bootmgr is compressed.. ” this odd  message showed up after I tried to compact the hard disk on Windows XP and then rebooting. Since bootmanager is not obviously loading, only other choice is to use the XP installation disk to boot up the system.

Solution.

Once the installer starts, press R to go to repair console.  type in the following three commands at DOS prompt.

cd \

attrib -c bootmgr

attrib -c ntldr

That took care of my issue.