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C Language > C Language Questions > How to enable or disable USB using C program?
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How to enable or disable USB using C program?

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DBA Trainer

Already given answer kindy see in my back command.
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Programming Guru

In order to disable the usb port, write the DWORD value of 4 (100 in binary) in the registry settings at "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR\Start" In order to enable the usb port, change that value to the DWORD value of 3 (011 in binary) in the registry settings #example... read more
In order to disable the usb port, write the DWORD value of 4 (100 in binary) in the registry settings at "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR\Start" In order to enable the usb port, change that value to the DWORD value of 3 (011 in binary) in the registry settings #example to disable usb port void main() { system("reg add HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\USBSTOR \/v Start \/t REG_DWORD \/d 4 \/f"); } read less
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Coding Expert

Save the code as block_usb.c and open it with turbo c compiler, after compilation it will create a block_usb.exe which is a simple program that will disable (block) all the USB ports of the computer hence you can block the usb port the unblocing or reversal is also possilble
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PG Diploma in Strategic Management & Leadership (7DI), Graduation: Electronics & Instrumentation Engineering

void main() { system("reg add HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\USBSTOR \/v Start \/t REG_DWORD \/d 4 \/f"); }
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Embedded, RTOS, C and Microcontroller

Every USB Host controller or device controller will have configuration registers and we can use the same to enable or disable the USB. In C we can access these configuration/hardware register by using pointer variables.
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Trainer

This is very small and easy code, once the block usb program executed the computer will not recognize any inserted usb drive, but we can reverse it by unblocking the usb port.
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C++ Training

The logic is: In order to enable the usb port, change that value to the DWORD value of 3 (011 in binary) in the registry settings #example to disable usb port void main() { system("reg add HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Services\\USBSTOR \/v Start \/t REG_DWORD \/d 4 \/f"); ...
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embedded system trainer

It depends which platform you are referring to, If its windows - registry settings can help you out, however if its linux based - first step would be to look for any sysfs entry or IOCTL if they can help the application to do the job. However you can access the USB controller register to do so, however... read more
It depends which platform you are referring to, If its windows - registry settings can help you out, however if its linux based - first step would be to look for any sysfs entry or IOCTL if they can help the application to do the job. However you can access the USB controller register to do so, however this can be done from the userspace only if the linux kernel is build with dev mem option. read less
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Computer wizard

well, In unix I heard there are driver programs through which you can control hardware of the computer.. I don't know about windows environment. Basically, for windows environment, .net framework can be used to control hardware as OS is developed in .net framework. Good question though!! Good luck ma...
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IT Professional

http://www.mycfiles.com/2011/02/c-program-to-disable-and-enable-usb.html?m=1
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