You should be able to overwrite the files the code of which you changed. The exception is with freeldr as well as registry entries.

2010/10/25 Fan Zhang <fanzi2009@gmail.com>
Hi guys,

I want to know how do you debug ReactOS. For example, when I change the code, I used to execute 'Make bootcd'. After that, I will install the ReactOS system by ReactOS.iso. So I'm confused if I have to install the whoe system after compiling. Do you have some easy way?
 Thanks.

Fan

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