To protect your data from counterfeit storage devices, a is the industry-standard solution for verifying the actual capacity of SD cards and USB drives.

Developed by Harald Bögeholz for the German computer magazine c't , this portable, lightweight utility detects drives that have been "spoofed" to report more storage than they actually possess. Using a fake drive can lead to irreversible data loss once its true physical limit is exceeded. Why You Need H2testw

Counterfeit storage is rampant in online marketplaces, where an 8GB drive might be modified to appear as 256GB to your operating system.