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Security tab
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CHAPTER 16 Windows in Detail
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Permissions are cumulative If you have Full Control on a folder and only Read permission on a file in the folder, you get Full Control permission on the file
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Windows XP Home has only a limited set of permissions you can assign As far as folder permissions go, you can assign only one: Make this folder private To see this in action, right-click a file or folder and select Sharing and Security from the options Note that you can t just select the properties and see a Security tab as you can in Windows 2000 and XP Professional Windows XP Home does not have file-level permissions
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Techs and Permissions Techs, as a rule, hate NTFS permissions You must have administrative privileges to do almost anything on a Windows 2000/XP machine, and most administrators hate giving out administrative permissions (for obvious reasons) If a tech does give you administrative permission for a PC, and something goes wrong with that system while you re working on it, you immediately become the primary suspect If you re working on a 2000/XP system administered by someone else, make sure he or she understands what you are doing and how long you think it will take Have the administrator create a new account for you with administrator privileges Never ask for the password for a permanent administrator account That way, you won t be blamed if anything goes wrong on that system: Well, I told Janet the password when she installed the new hard drive Maybe she did it! When you have fixed the system, make sure that the administrator deletes the account you used
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This protect yourself from passwords attitude transcends Windows 2000/XP PC support folks get lots of passwords, scan cards, keys, and ID tags Most newer techs tend to get an I can go anywhere and access anything attitude, and this is dangerous I ve seen many jobs lost and friendships ruined when a tape backup suddenly disappears or a critical file gets erased Everybody points to the support tech in these situations In physical security situations, make other people unlock doors for you In some cases, I ve literally made the administrator or system owner sit behind me reading a magazine, jumping up and punching in passwords as needed What you don t have access to can t hurt you
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MIKE MEYERS A+ CERTIFICATION PASSPORT
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Objective 1603
Booting Windows
indows 2000 and XP distinguish between the files that start the OS (often called the system files or Windows startup files) and the rest of the OS files (usually in the \WINDOWS or \WINNT folders) The system files (memorize these!) consist of three required files: NTLDR, BOOTINI, and NTDETECTCOM If you re using a SCSI hard drive, there s a fourth file called NTBOOTDDSYSNTLDR (pronounced NT loader) that begins the boot process You know from earlier chapters that to make a drive bootable requires an active, primary partition, right Let s look at the process in a PC with a hard drive partitioned as C: and D:
The Boot Process
The CPU wakes up and runs the system BIOS, and then the BIOS sends out a routine looking for a valid OS in the boot sector of the primary, master hard drive The MFT lives in the boot sector of the C: partition It points to the location of the Windows 2000/XP system files, also on the C: drive, because that s the bootable drive Windows calls the primary, active partition the system partition or the system volume (if it s a dynamic disk) The Windows 2000/XP boot files consist of NTOSKRNLEXE (the Windows kernel), the \WINNT\SYSTEM32\CONFIG\SYSTEM file (which controls the loading of device drivers), and the device drivers Even though these files are the core of the Windows 2000/XP OS, they are not capable of booting, or starting, the system For that feat, they require NTLDR, NTDETECTCOM, and BOOTINI the system files The system files start the PC and then, at the end of that process, point the CPU to the location of the boot files The CPU goes over and chats with NTOSKRNL, and the GUI starts to load The OS is then up and running, and you re able to do work The odd part about all this is that Microsoft decided to make the OS files mobile The Windows OS files can reside on any partition or volume in the PC The \WINDOWS folder, for example, could very well be on drive D:, not drive C: Whichever drive holds the core OS files is called the boot partition This can lead to a little confusion when you say the system files are on my C: drive, but Windows is on my D: drive, but that s just the way it is The vast majority of Windows 2000/XP systems have the system partition and the boot partition both on the same big C: partition
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