Q: Can I still install nvm when I already got an existing node installation?
A: With the latest version of nvm (tested on v1.1.9), while installing it detects the previously installed Node, and prompts asking "Node vXX.X.X is already installed. Do you want NVM to control this version?"
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First install NVM - https://stackoverflow.com/questions/25654234/node-version-manager-nvm-on-windows -2.nd answer
nvm install latest
nvm use 15.4.0 [instead of 15.4.0 use whatever number cmd spills on you]
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curl https://raw.githubusercontent.com/creationix/nvm/master/install.sh | bash
Q: Can I still install nvm when I already got an existing node installation?
A: With the latest version of nvm (tested on v1.1.9), while installing it detects the previously installed Node, and prompts asking "Node vXX.X.X is already installed. Do you want NVM to control this version?"