Corrupt an ISO File Online
Corrupt an ISO disc image online for free. Destroys the 32 KB system area and volume descriptors so the image cannot be mounted or burned.
- Aucun envoi
- Aucune limite de taille
- Aucune inscription
Corrompez votre fichier ISO
Réglé pour .iso, .img, .cue, et fonctionne tout aussi bien avec n'importe quel autre format.
Pourquoi les fichiers ISO sont difficiles à corrompre correctement
An ISO 9660 image begins with a 32 KB system area, followed by volume descriptors at fixed offsets and path tables that map the directory tree. Because those offsets are fixed rather than pointer-driven, tools can often recover an image with scattered damage, the structures are exactly where they are expected to be.
Ce que cet outil détruit
- The system area. The first 32 KB, which holds boot code on bootable images, is overwritten in full.
- Volume descriptors. The
CD001primary volume descriptor at offset 0x8001 and its terminator are destroyed. - UDF descriptors. The
BEA01,NSR02andNSR03markers used by UDF images are targeted too. - Path tables and payload. The directory structure is destroyed and entropy is scattered through the image body.
Ce que vous verrez ensuite
| Application | Comportement |
|---|---|
| Windows mount | "Sorry, there was a problem mounting the file." |
| macOS DiskImageMounter | "No mountable file systems." |
| Rufus / balenaEtcher | Rejects the image as invalid before writing. |
mount -o loop | "wrong fs type, bad option, bad superblock." |
Raisons courantes de le faire
- Testing that an OS deployment tool verifies images before writing.
- Verifying a download validates its checksum rather than trusting the file.
- Simulating a bad burn or interrupted download for a support runbook.
- Checking that a virtualisation platform reports a bad ISO clearly.
Comment corrompre un fichier ISO
- Déposez votre fichier .iso dans la zone ci-dessus, ou cliquez pour parcourir.
- Laissez le niveau sur Standard, sauf si vous voulez des dommages partiels (Light) ou devez mettre en échec un logiciel de récupération (Heavy).
- Cliquez sur Corrompre le fichier. Le traitement a lieu sur votre appareil, il se termine donc presque instantanément.
- Téléchargez le résultat. Par défaut, il conserve le nom de fichier et la longueur en octets d'origine.
Questions fréquentes sur ISO
Why does the header region need to be so large?
Because ISO 9660 reserves the first 32 KB as a system area and only puts the primary volume descriptor at offset 0x8001. Anything smaller would leave the descriptor untouched.
Will a bootable ISO still boot?
No. The boot code lives in the system area, which is overwritten in full.
Does it work on hybrid ISO/UDF images?
Yes. Both the ISO 9660 and UDF descriptor sets are targeted, so hybrid images break completely.
Can a large ISO be handled in the browser?
Yes. Files are processed in 8 MB slices, so a multi-gigabyte image works without exhausting memory.