Drive Capacity Tester

説明

A stick that says 2 TB is not always a 2 TB stick. Counterfeit flash drives and memory cards ship with firmware that reports a size the hardware does not have. macOS believes it, files copy without an error, and the data quietly lands nowhere or on top of something you saved earlier. You find out months later, when the photos will not open. Drive Capacity Tester writes across the whole drive and reads all of it back. Every position gets a pattern derived from its own offset, so a drive that keeps only a fraction of what it accepts cannot pass by handing the same block back twice. • The real size, not the printed one If the drive stores less than it claims, the app reports how much of it is genuine, so you know what you actually bought. • It stops as soon as it knows After each file the very first block is read again. The moment that has been overwritten, the drive has wrapped around on itself, and the test ends there instead of running for hours to tell you the same thing. • Every byte is checked Verification reads each file back in full and compares it byte for byte, starting with the last file written, where a fake gives itself away first. • Know the wait before you start The drive is measured first, so the dialog tells you how long the run will take before you commit to it. • Nothing is guessed The block size is measured on the drive in front of you, so a tired SD card and a fast SSD are each written the way that suits them. Premium features • Split a long test into sessions Large drives take hours. Stop when you need the Mac back, continue later, and the files already written are reused instead of written a second time. • Test several drives at once Every stick in the drawer in a single run. • Choose the algorithm and the size Write only, verify only, or both, over as much of the drive as you want to spend time on. Please note: testing a drive erases it. Everything on the volume is deleted before the test starts, so copy anything you want to keep somewhere else first. The app icon was designed by Hugo Santos. You can find more information about my app icons here: https://sascha-simon.com/icons/ You can find more great apps on my homepage: https://www.sascha-simon.com If you enjoy using this app, please leave a positive review. Positive reviews help other users discover the app and are a source of inspiration for me to further develop the app.

• New built-in help answers common questions about testing drives and reading the results. • The result now shows how much of the drive was tested, such as "64 GB of 2 TB verified". • Now requires a Mac with Apple silicon. Macs with an Intel processor can keep using the previous version.

情報

販売元

Sascha Simon

カテゴリ

Utilities

バージョン

5.0.0

対応OS

iOS 15.6+

サイズ

3.9 MB

年齢制限

4+