Access denied Error Solution :

open the properties of ldf and mdf file
1.  Check the owner ship status of mdf and ldf file.
2. Check if there a use call  Everyone user added to file group , if not found then added it to and give full permission.

1. if you have a lot file to do this operation you can do it using command prompt.


for taking ownership of all database or file of a directorry

D:
cd D:\SOL ServerDatabase2008\All
pause
takeown /f . /r
pause

save it and give extension of bat file and then execute using admin previlage


for add everyone user of a direcotry

icacls * /t  /grant Everyone:F
pause

must run on same directory