Claude Opus 5.5 reportedly deleted a user's entire C drive, sparking warnings on skip-permissions
JeremyNguyenPhD · x · 2026-10-08
Developer @PerceptualPeak reports Claude Opus 5.5 deleted his entire C drive, and only daily backups to a Synology NAS saved him. The post urges anyone still using --dangerously-skip-permissions to try the auto permission mode (claude --permission-mode auto), which runs a classifier that checks for risky actions before executing them.
Key points:
- Incident involves Claude Opus 5.5 wiping a full drive
- Backups were the only safety net under fully autonomous permissions
- Auto mode with a risk-classifier is the suggested safer workflow
Related event: Claude Opus 5.5 Reportedly Wipes User's Entire C Drive(4 posts)→
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