Claude just deleted half of my C: drive

From the “things that happen only to other people” department: Claude just deleted half of my C: drive Type: bug Title: Model ran a mis-quoted rd /s /q that recursively deleted C:\ root contents Area: Bash tool / destructive commands Failure mode: destructive actions Task: debug Details: What happened: To delete a probe dir with \\?\-only names, the model generated a .ps1 via printf containing cmd.exe /c “rd /s /q \”\\?\$d\””. Quoting broke; cmd (started from a UNC cwd, so defaulting to C:\Windows) treated the target as \ and recursively deleted C:\ contents for ~2 min as the user (C:\[some tool] 71 GB, plus bin, ESD, Intel, lazarus, log) until the model noticed and killed it. What the user said: “That’s unfortunate.” Repro: bash in WSL -> printf a .ps1 with escaped nested quotes -> powershell.exe -File -> cmd.exe /c “rd /s /q \”\\?\\”” from a \\wsl.localhost cwd. Evidence: 2026-11-12 ~10:29-10:33 CET; task bwoce5crs output shows rd errors walking \$Recycle.Bin … \PROGRA~1; recovered…

Commenting on Bubbles has been removed. Why? If you want to talk about this post, write to the author, use the comments on their blog if it has them, or reply with a "RE:" post on your own blog. Suggestions? feedback@bubbles.town