Monday, 15 September 2014

Windows 2000/NT system files

Boot.ini-  Define the location of the Windows NT and Windows 2000 system files.

Ntldr-  is responsible for loading the operating system.

Bootsects.dos-  The bootsects.dos files holds the boot sector information of any other operating system that are loaded on the system.

NTdetect.com-  This files is responsible for detecting hardware and building a hardware list.

NTbotted.sys-  This files is used only when the system boots from a SCST device that does not have a BIOs installed.

NTuser.dat-  The NTuser.dat files contains configuration information specific to each user define on the system.  Each user to successfully logon to the system will have an NTuser.dat file created in the c:\Document and settings\Username folder.
When the user logon to the system, the information in the NTusedr.dat file is placed in the HKEY_USER subtree of the registry.

Major Operation Utilities

Defreg.exe-  Fregmentation of the disk is double whammy-not only does it slow the system down because has hard disk has to work harder to retrieve that files the increased work load can literally wear the hard-disk out quicker then it would otherwise so, defregmenting your hard drive does more then just speed the system up-it could literally mean that it last longer.

Fdisk.exe-  Fdisk the utility used to partition the hard disk.  A hard-disk has to have one formatted partition to hold the operating system .  This partition canbe created by Fdisk or by the window setup program when the booted from the CD ROM drive.

Windows XP Backup-  To access the Windows XP Backup utility.

Click start---------->All Programmes------------>Accessorries------------>System tools----->Backup

Backup strategies-  When it comes to choosing a type of backup there are three primery choice full incremented and differential backukp.

Full Backup-  Full backup can take they are often restricterd to weekly or m onthly use, though the increasing speed the capacity of backkup media is making nightly full backup a much more realistic proposition even for those with gigabytes of data.

Incremental backup-  An incrementaol backup includes onlyh the files that have changed or been created since the last full backup.  To determine whetgher a file has changed since the last full  backup, the backup software looks at the archieve bit seeting on the file.  Only files and folders with the archieve bit set to on will be backed up.  Once the file  has been backup. the archieve bit is cleared so that the file is not backed up again unnecessarily.

Differential Backup-  Differential backup the files trhat have changed since the last full backup.

Scandisk-  Scandisk is a widely used utility that is used to detect and correct file problems and errors on hard-disk and floppy disk.

CHKDSK-  chkdsk utility that is used to check and if necessary repair the file system on a hard-disk .  IKt is a DOS based utility.

Disk Cleanup-  The disk cleanup feature in Window 2000 the Window XP scanyour computer hard-disk looking for files such as temprary files and temprapry internet files that canbe deleted to freeup space on the disk.

Formet-  The formet command is the tools used in the final step to lprepare a disk for use. The formet command can be used on both hard disk and floopy disk.

Device Manager-  Device Manager to identify that hardware has been detected by the system, the resource used by device and whether the device is currently functioning.

If a resource conflict is shown in Device manager you can manually change resource to correct the conflict.

Device that are not recognize byh the system or that are incorrectly configurredc will be displayed with the yellow circle thatr contains either a question mark or an exsclamation point .  A red X indicates that the device has been disabled.

msconfig.exe-  The MSconfig utility enable you to safely modify legacy Windows files without making parmanent changes .  It allow you to castomise these files, determining which of the legacy file Windows to use.

Regedit.exe-  The regedit utility enable you to nevigate through the registry modify and search through the values in the registry and manually export the entire registry to create a backup.

Regedit is used by all version of windows since Windows 95.

Regedit canbe used to expert the regestry for backup purpose and emport that file when needed.

Sysdit.exe-  The sysdit utility lets ;you edit the legacy system files simultaneously, including the Auytoexec.bat, WIN.ini System.ini, Config.sys, and protocol.ini files.

Event Viewer-  The Event viewer utility in windows NT/2000/XP provides access to the various syhstem logs. These provide useful information on now the system is running oand issue that have occurred.

Attrib.exe-  This command line utility is used to change or view the attribute of a file or folder.

Extract.exe-  The extract utility is used to manually extract Windows installation files.

Attrib- The attrib command is used to and modify the attributes of a file.  File attribute include hidden (h)  system(s) read-only (r) and archieve (a) file attributes are discussed in detail later in the chapter.

You can view the attributes of an individual file by typing attrib followed by the file name. To add and remove the attributes from that file, use the + and - characters.

Example-  If you want to makea file called comptia.bat a hidden  and read - only file, you would type the following.

                                                      attrib +h  +r  comptia.bat


Copy-  The copy command used to coopy file from one location to another from the command line.

Example-  This command will copy a file from the floppy disk to the hard-disk.

                                                                copy a:\text.doc c:\