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ShredOS

ShredOS is a free, open-source bootable operating system for erasing disks with nwipe.

Place
#12 of 19
Score
6.0
ShredOS's website

What ShredOS is

ShredOS is a free, open-source bootable operating system for erasing disks with nwipe. The project provides .img and .iso images for USB drives, CD/DVD, Ventoy, and virtual machines. It supports x86 PCs and servers, plus Intel-based Macs, with BIOS or UEFI booting. Nwipe offers several erasure methods and pseudo-random generators, configurable rounds, verification, and a final blanking pass. ShredOS can create PDF erasure certificates and log files, including reports focused on a drive or the system. The image also includes disk utilities such as smartmontools, hdparm, nvme-cli, sg3_utils, hexedit, and parallel. For automated setups, the project documents unattended autonuke workflows, PXE booting, persistent configuration, and custom scripts. Headless operation and a user-enabled Telnet server are documented for systems with faulty or missing display hardware. Logs and PDFs can be sent to FTP or TFTP servers, but FTP does not encrypt data. Wiping permanently erases data, and writing an image to a USB flash drive overwrites that drive’s existing contents.

Good

  • Bootable images support USB, CD/DVD, Ventoy, and virtual machines.
  • Nwipe offers configurable erasure methods and verification.
  • Can generate PDF certificates and log files.
  • Documents unattended workflows and PXE booting.

Watch out

  • Wiping irreversibly erases selected data.
  • Writing an image overwrites the USB drive’s contents.
  • FTP transfers do not encrypt data.

Who it suits

ShredOS suits users who need bootable disk-erasure tools and can carefully select the target drive. Its automation and headless-use documentation may also suit administrators managing erasure workflows.

Verdict

ShredOS provides a free bootable environment with configurable erasure options, logs, certificates, and automation documentation. Take care to verify the selected drive and remember that writing the image also erases existing USB contents.

Plans and prices

From ShredOS's own pricing page, checked 9 Oct 2026.

All about pricing
PlanPriceWhat it gives you
ShredOSFreeBootable disk erasure image · 32-bit and 64-bit builds

The facts

Each one read from ShredOS's own pages, with the date it was checked.

What it does

Automation
The project documents unattended autonuke workflows, PXE booting, persistent configuration, and custom scripts.checked 9 Oct 2026
Boot media
The project provides .img and .iso images for USB drives, CD/DVD, Ventoy, and virtual machines.checked 9 Oct 2026
Build
ShredOS is built with Buildroot, and the repository documents building images from source.checked 9 Oct 2026
Download verification
The quick-start instructions tell users to verify the image checksum listed in the release notes.checked 9 Oct 2026
Erasure options
nwipe offers multiple erasure methods, pseudo-random generators, configurable rounds, verification, and a final blanking pass.checked 9 Oct 2026
Hardware
ShredOS supports x86 PCs and servers, plus Intel-based Macs, with BIOS or UEFI booting.checked 9 Oct 2026
Headless use
ShredOS documents headless operation and a user-enabled Telnet server for systems with faulty or missing display hardware.checked 9 Oct 2026
Included tools
The image includes disk utilities such as smartmontools, hdparm, nvme-cli, sg3_utils, hexedit, and parallel.checked 9 Oct 2026
Limit
Writing an image to a USB flash drive overwrites its existing contents.checked 9 Oct 2026
Network transfer
The documentation describes sending logs and PDF files to FTP or TFTP servers, and warns that FTP does not encrypt data.checked 9 Oct 2026
Purpose
ShredOS is a small bootable operating system for securely erasing disks with nwipe.checked 9 Oct 2026
Reports
ShredOS can generate PDF erasure certificates and log files, including per-drive or system-focused certificates.checked 9 Oct 2026
Script security
The project warns that fetching and running scripts as root is risky and should only be done over a secure private network.checked 9 Oct 2026
Security warning
ShredOS warns that wiping irreversibly erases data and advises checking selected drives before starting.checked 9 Oct 2026

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