Windows 7

Windows 7 Regedit Permissions

Deleting a registry key in Windows 7:
Start, enter Regedit on the run box,
Select the registry key, right-click -> Delete, click Yes.

An Error Window will pop-up “Error Deleting Key“.

In Windows 7, Permission is needed to complete the task even if you’re logged-in as administrator. You have to take ownership “Change owner to:“.

Select the registry key, right-click -> Permissions -> Advanced -> Owner tab, select Administrators, Apply.

Note about Windows 7 UAC:

Windows 7 UAC (User Account Control). When permission or passwordis needed to complete a task, UAC will alert you with one of the following messages:
- A Windows program needs permission to continue.
- A program that’s not part of Windows needs permission to continue.
- Program that doesn’t have valid digital signature from its publisher.
- Blocked programs by administrator.

Difference between Privileges and Permissions:
- Permissions apply to objects.
- Privileges apply only to user accounts.

Permissions to access the resource and what level of permission are listed in the Access Control List (ACL).

LHOSTS

LMHOSTS (LAN Manager Hosts) is used in conjunction with workgroups and domains, it enable domain name resolution under Windows.

The lmhosts needs to be configure in Windows and Linux if you’re using Samba file server in a network with no domain controller.

In Windows 7, the LMHOSTS file is located in:
“C:\Windows\system32\drivers\etc\”

Here’s the default configuration:
# Copyright (c) 1993-2009 Microsoft Corp.
#
# This is a sample HOSTS file used by Microsoft TCP/IP for Windows.
#
# This file contains the mappings of IP addresses to host names. Each
# entry should be kept on an individual line. The IP address should
# be placed in the first column followed by the corresponding host name.
# The IP address and the host name should be separated by at least one
# space.
#
# Additionally, comments (such as these) may be inserted on individual
# lines or following the machine name denoted by a ‘#’ symbol.
#
# For example:
#
# 102.54.94.97     rhino.acme.com     # source server
# 38.25.63.10        x.acme.com             # x client host

# localhost name resolution is handled within DNS itself.
# 127.0.0.1            localhost
# ::1                         localhost

Add the Linux Samba server ip address and hostname.

In Linux (openSUSE), the lmhosts file is located in: “/etc/samba/”

Add the Windows client’s ip address and its computer name.

Windows 7 Event Viewer Error ID 7026 – cdrom

After removing a CD-ROM/DVD-ROM drive from a Windows 7 system, its driver’s path is still in the Windows Registry and Windows will attempt to load it during startup.

It will fail with the following Error in the Event Viewer:
Event ID: 7026
Source: Service Control Manager
Description: “The following boot-start or system-start driver(s) failed to load: cdrom”

To get rid of the error, disable the specific device in the Registry to prevent it from loading.

The Windows 7 Registry Path:
\HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\cdrom

If you do not have a CDROM Drive install, remove the entire cdrom entry from the Registry.

This error also occurs after Windows 7 Service Pack 1 was installed on the system without a CDROM or DVDROM Drive.