When it comes to hard disk performance testing, AS SSD Benchmark and CrystalDiskMark/CrystalDiskInfo must be the first things you can think of. What AppNee wants to tell you is that they are just popular tools, not the best. If what you need is a real professional hard disk performance testing tool, then TxBENCH is one of them, whose existence is earlier than AS SSD Benchmark, but it is little known because of its low profile.

Check Flash (ChkFlsh for short) is a tiny and free app for testing and formatting flash drives, developed by Cherkes Mihail from Ukraine. In addition to surface testing, it also allows to check the speed of reading and writing, edit partition info, save and restore full drive and partition images, save and restore MBR, and perform full drive or partition data erasing.

When phasing out the use of hard disk and other devices storing digital data, for ordinary users, the private data inside should be erased effectively in order to avoid the abuse or leakage of privacy made by people with ulterior motives; for enterprises and institutions, the data is often very important, sensitive and confidential, so that they must be destroyed strictly. To do this, we have to turn to some third party professional data sanitizing tools, because deleting the data itself and formatting the entire disk are all futile.

As we all know, the common way of deleting a file/folder is just to mark its directory entry or occupied cluster area. So the fact is all these so-called "deleted" files/folders are still lying there. And using the ancient DOS command 'Undelete' or Norton's Unerase command can be restored with ease.

Any PC hard disk used for a long time has innumerable personal data, let alone various commercial computers. These data are mixed, which even has personal confidential files, once outflowed, the consequences will be unimaginable.