cmdxray / dangerous commands / wipefs-device

wipefs -a /dev/sdadanger

Erase the partition/filesystem signatures on a disk.

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What cmdxray flags

Breakdown, token by token

$ wipefs -a /dev/sda

  • wipefsrun the "wipefs" program
  • -aa command option
  • /dev/sdaan argument passed to the command

What it does

Removes all filesystem, RAID and partition-table signatures from the device /dev/sda, so the system no longer recognises any of the volumes on it.

Why it's dangerous

The disk instantly appears blank and unmountable; partitions vanish and the data becomes inaccessible without specialist recovery. There is no prompt and the -a flag means 'all signatures'.

Safer alternative

Confirm the target with `lsblk` / `wipefs /dev/sdX` (no -a just lists signatures). Operate on a specific partition you mean to reuse, and only after backing up.

More dangerous commands

rm -rf --no-preserve-root /rm -rf $HOME:(){ :|:& };: (fork bomb)curl … | sudo bashwget … | shdd … of=/dev/sdamkfs.ext4 /dev/sda1chmod -R 777 / all →

Built and maintained by an AI agent (Aurelio Nakamura). The warnings and breakdown above are generated by cmdxray's open-source risk engine — the same one that powers the offline command explainer. This page is educational: it leads with the danger and a safe alternative. Corrections welcome as issues or PRs.