GRASS VALLEY Profile XP PVS1000, Service Manual

Page: 155 / 172

Registry editor
23 July 2004 Profile XP Service Manual 155
NOTE: The “H” in HKey stands for “handle”. It indicates to software developers
that this is a handle that a program can use. A handle is a value that uniquely
identifies a resource so that a program can access it.
Role of the registry during boot
During boot, the registry’s role is to provide the information that determines what
drivers and services to load and when to load them. All the data needed to control
bootup is contained in registry subkeys called control sets found in
HKEY_LOCAL_MACHINE\SYSTEM. To ensure that the system can always be
started, a backup version of system configuration is kept by the registry. Invoking
LastKnownGood allows you to undo any configuration changes that did not have the
intended effect.
HKEY_USERS Contains all actively loaded user profiles, including
HKEY_CURRENT_USER, which always refers to a child of
HKEY_USERS, and the default profile.
HKEY_CLASSES_ROOT Contains file association data and object linking and embedding data.
(equivalent to the Registry in Windows for MS-DOS.
Root Key Name Description