Windows 7 Rename a remote system file?


New Member
Hey all! I'm a noob at writing batch files and have written a bunch, but my latest one is an odd one. I'm actually trying to break remote machines (for security reasons) by renaming the bootmgr system file and then shutting the machines down so they can no longer boot up. My batch file will map the remote machines hard drive to "Z" and then I try to rename the bootmgr file, but I keep getting a syntax error. Here's what I have:

@echo off
set /p a="Enter IP Address or Name: "
net use z: \\%a%\C$ /u:%a%\USERNAME PASS
timeout /t 10
ren -y z:\bootmgr bootmgrbroken
timeout /t 5
goto start

I've tried even renaming a non system file and still get the same syntax error. Thanks in advance for all your help!


Windows Forum Admin
Staff member
Premium Supporter
Microsoft Certified Professional
Although your methods seems nefarious.. I'll bite. Obviously if you can map the drive remotely you have Administrator access to the remote machines, if that is the case you should really check out Sysinternals PsTools package, specifically psexec.

It comes with documentation, and running the programs with no parameters should spit out the help, but basically psexec installs a temporary service on a remote machine to then carry out commands on the remote machine's command prompt. (of course you need admin credentials to said remote machine).


Windows Forum Team
Staff member
A few things
  • You would need to run all of these commands from an elevated command prompt. If you run them without the elevated command prompt you are using a regular user access token and not an admin token
  • There are local and share permissions on the remote file system and the most restrictive takes precedent
  • Even if you are executing these commands as an admin, specifically for the system files, you will need to first take ownership of them before you can do anything