Windows XP Installation After Windows 7 -- Part-2

Some Useful Command

ASSIGNING THE BOOT ORDER FOR THE NEXT REBOOT

bcdedit   /bootsequence  {ntldr}

CHANGING THE DEFAULT OS

While this used to be a simple procedure in XP, It still can be relatively easy, if you are comfortable with command line interfaces. First , we need to identify the GUID of the operating system that we want to configure as default as the command prompt type……………

bcdedit   /enum

now we will get an output similar to this. This tells us that our windows xp installation has a GUID {ntldr}. To set this as the default choice in our boot manager, type…..

bcdedit   /default   {ntldr}

CHANGING THE TIME OUT VALUE

To speed up your boot up time , you can lower the timeout period specified for the default operating system to startup. To do this, type …………

bcdedit   /timeout   Timeout Value

CHANGING THE OPERATING SYSTEM DISPLAY ORDER

To change the order in which your operating systems are listed , type

Bcdedit   /displayorder

If you have a lot of operating system entries, you can add flags like ‘addfirst’ or ‘addlast’  to push the entry to the top or the bottom of the list. For Example ::::::::

Bcdedit   /displayorder   {current}   -addfirst

Will move windows vista / Windows 7 to the top of the list.

DELETING OPERATING SYSTEM ENTRIES

To remove an operating system, discard its entry from the boot configuration list by using

Bcdedit   /delete  {ntldr}  /f

However, for more critical entries, such as  {default} you might have to use the command with a  ‘ /f ‘ to forcefully delete the  entry.

UPDATING THE BCD DATABASE

If you attempt to retrieve using ‘system start repair ‘ is unsuccessful , start the repair console and enter the following commands….

c:

cd  boot

attrib  bcd  -s  -h  -r

ren  c:\boot\bcd   bcd.old

bootrec   /rebuildbcd

Rewriting MBR

Insert the Win Vista / Win 7 Setup DVD and select ‘ System Start Repair ‘  . if the does not work , boot the repair console in xp and enter the command..

bootrec   /fixmbr

  

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Enjoy …….