Managing the Registry Table 14-1. Registry Subtrees Subtree (Web hosting ecommerce)
Managing the Registry Table 14-1. Registry Subtrees Subtree Description Physical Subtree HKEY_LOCAL_MACHINE (HKLM) Stores all the settings that pertain to the hardware currently installed on the machine. HKEY_USERS (HKU) Stores user profile data for each user who has previously logged on to the computer locally as well as a default user profile. Logical Subtree HKEY_CLASSES_ROOT (HKCR) Stores all file associations and object linking and embedding (OLE) class identifiers. This subtree is built from HKEY_LOCAL_MACHINESOFTWARE Classes and HKEY_CURRENT_USERSOFTWARE Classes. HKEY_CURRENT_CONFIG (HKCC) Stores information about the hardware configuration with which you started the system. This subtree is built from HKEY_LOCAL_MACHINE SYSTEMCurrentControlSetHardware ProfilesCurrent, which in turn is a pointer to a numbered subkey that has the current hardware profile. HKEY_CURRENT_USER (HKCU) Stores information about the user currently logged on. This key has a pointer to HKEY_USERUser- SID, where UserSID is the security identifier for the current user as well as for the default profile discussed previously. Chapter 14 Inside Out The Registry on 64-bit Windows systems The Registry on 64-bit Windows systems is divided into 32-bit and 64-bit keys. Many keys are created in both 32-bit and 64-bit versions, and although the keys belong to different branches of the Registry, they have the same name. On these systems, Registry Editor (Regedit.exe) is designed to work with both 32-bit and 64-bit keys. The 32-bit keys, however, are represented with the WOW64 Registry redirector and appear under the HKEY_LOCAL_MACHINESOFTWAREWOW6432Node key. If you want to work directly with the 32-bit keys, you can do so by using the 32- bit Registry editor located in the file path %SystemRoot%Syswow64Regedit. Part 4: Managing Windows Server 2003 Systems
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