Environment variables

Variable	Sample Typical Value
$SystemDrive%	C:
%SystemRoot%	C:\WINNT C:\Windows
%SystemDirectory%	C:\WINNT\System32 C:\Windows\System32
%WinDir%	C:\WINNT C:\Windows
___	C:\WINNT\Program Files
%ComSpec%	C:\WINNT\system32\cmd.exe
%Temp%
%HOMEDRIVE%	C: The drive letter associated with the user's home directory
%HOMEPATH%	The path to the user's home directory (excluding drive):\Documents and Settings\Guest
%OS%	Windows_NT The operating system the user is running
%USERNAME%	The user's name

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DISCLAIMER:UpgradeNRepair (UNR), the owner, and any representatives of UpgradeNRepair (UNR) is not liable for any data loss or hardware failure because of the following procedure. The Information provided is a guide to assist the customer with an issue with their system or software. The procedures offered here may or may not harm your files. Even procedures that are not designed to harm files, can harm files, depending on the issue with the system. Because there is too many unknowns, UpgradeNRepair is unable to guarantee the safety of the files. Customer is responsible for their data and their actions. Before following the directions on this page and the pages these links are linked to, any data the customer does not want to lose will have to be saved. Saving the data is the sole responsibility of the customer. Some or all of the following procedures or information may not apply to your situation.