I believe pnpm cleand (deleted all the files) my E: drive.

[Blaxzter]

I encountered an issue in a project where I installed a package using the following command under Windows PowerShell

pnpm install --save \
  @fullcalendar/core \
  @fullcalendar/vue3

Well windows and \ are no fried and I hate PowerShell for it with a passion.

Anyway, this command unexpectedly added a \ as a package, which seemed to create a link to a local package at the root directory.

After trying to revert that by fixing the package.json and a pnpm installs, I received errors in the project.
I tried a clean reinstall with deleted node_modules where, subsequently, pnpm installed the pnpm store on the E: drive (the lost drive where the project was located) instead of the correct path E:\.pnpm-store\.

This should have been a warning sign that something went wrong with pnpm configuration when it thinks E: is the new root.

Without knowing what happened I decided to reset pnpm. I manually deleted the files that pnpm had placed incorrectly in E: and then ran a pnpm store prune.

However, since pnpm mistakenly thought its store root was E:, it ended up wiping everything on that drive.

This is only my assumption, as it was the latest stuff I did on the drive.. And the package I was working in mystically survived while everything else got wiped of the face of the earth.