Problem: So I’ve decided to turn off compression(My Computer -> Select a Drive -> Right Click “Properties”) to speed up my computer. Compression saves disk space but it seems to slow down my computer whenever it’s accessing massive amount of files.
I was prompted to restart my PC so I did, I was then greeted by an error that says:
BOOTMGR IS COMPRESSED
Press Ctrl+Alt+Delete to Restart
There are 4 (possible) fix for this problem.
Option #1: Boot from your Windows Vista DVD and select Repair your Computer -> Startup Repair.
Option #2: Boot from your Windows Vista DVD and select Repair your Computer -> Command Prompt, execute the following commands: bootrec /fixboot bootrec /fixmbr Reboot.
Option #3: At the prompt to select your OS installation, click the button that says ‘Load Drivers’. This should bring up a explorer-style drive browser.Then just right-click on the drive you tried to compress, and deselect ‘Compress this Drive’, which should still be ticked on. Hit apply, and apply to subfolders/files. Reboot.
Option #4: Boot from your Windows Vista DVD and select Repair your Computer -> Command Prompt, in the command prompt, execute the following commands by typing them and pressing enter for each line: c: expand bootmgr temp attrib bootmgr -s -r -h del bootmgr ren temp bootmgr attrib bootmgr -a +s +r +h Reboot.(If the 2nd line fail, go back to 1st line and replace C with the drive letter of where your windows is installed.) -OR- execute the following where C is where your windows is installed: (thank you Liviu from Neosmart.net for sending this in) compact /U C:\bootmgr compact /U C:\ntldr
That’s it! Hope that helped you out.