About H2testw
H2testw is a lightweight utility for testing storage devices for errors and verifying their stated capacity. It checks whether data written to a drive can be read back correctly and whether the available storage matches what the device claims. This can help identify faulty or misleading flash drives and memory cards. The product is intended for storage verification rather than general disk benchmarking. The supplied information does not describe test duration, supported filesystems, or whether testing is destructive to existing data. Users should ensure important files are backed up before running a storage test that writes data. Its established purpose is checking storage capacity and detecting errors.
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