Database in Read-Only after detach/attach

I got a "middle of the night panic call" this morning. My customer was moving 2 user databases to a new drive on the same server.

After detach and copy, he re-attached successfully. But, the databases are in read-only mode and cannot be changed (Error 5105, Device activation error. The physical file name '%.*ls' may be incorrect.)

SQL 2000, post Sp3, Windows 2003, sp1.

Additional errors:
2007-01-16 03:06:41.02 spid61 Starting up database 'MyDatabase'.
2007-01-16 03:06:41.02 spid61 udopen: Operating system error 5(Access is denied.) during the creation/opening of physical device F:\SQLData\MyDatabase_Data.mdf.
2007-01-16 03:06:41.02 spid61 FCB::Open failed: Could not open device F:\SQLData\MyDatbase_Data.mdf for virtual device number (VDN) 1.
2007-01-16 03:06:41.02 spid61 udopen: Operating system error 5(Access is denied.) during the creation/opening of physical device F:\SQLData\MyDatabase_Log.ldf.
2007-01-16 03:06:41.02 spid61 FCB::Open failed: Could not open device F:\SQLData\MyDatabase_Log.ldf for virtual device number (VDN) 2.

Turned out that the SQL Server startup account did not have the correct security permissions on the folder or the files. Whoops. :)

Kevin3NF