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ERROR_DISK_FULL
The filesystem cannot allocate the required storage
ERROR_DISK_FULL indicates insufficient free space on the destination volume. The shortage may involve file data, filesystem metadata, a quota, a thin-provisioned backing store, or reserved capacity even when a quick free-space display appears nonzero.
Checks to perform
- Measure free space on the exact volume that contains the destination.
- Include temporary files, transaction logs, alternate streams, and final rename requirements.
- Check user or directory quotas and virtual-disk backing capacity.
- Consider sparse-file expansion and filesystem metadata overhead.
Recovery
Free sufficient space or choose another destination, then restart the operation from a verified state. Applications should clean up incomplete temporary files and preserve the original error for the user. Estimating required space before a large job improves usability, but a later allocation can still fail because storage is shared.
References
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