Update- Issue is resolved and original poster has managed to install it by using screen and created the folder while it was running pecl install grpc
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Glad that you were able to resolve your issue and I appreciate your effort in sharing the solution.
Your contribution will undoubtedly assist others facing similar challenges.
As the [Microsoft Q&A community follows a policy where the question author cannot accept their own answer] {https://learn.microsoft.com/en-us/answers/support/accept-answer} ,
I've reposted your solution for wider audience.
Feel free to consider "Accepting" the answer.