![]() Regardless of the manufacturer, you can say it for a fact that the execution of the TRIM command is a nearly 100% guarantee of file deletion. ![]() Today’s SSD controllers are designed to report a data block empty as soon as the command is received – even if the actual wipe of that block occurs at a later point. This answer and this article suggest that most controllers of SSDs will return zeros for the trimmed blocks immediately, making it impossible to retrieve data from the formatted SSD with software like testdisk or foremost: įrom my understanding, the SSD's garbage collector will run some time after the SSD's controller has received the trim command from the operating system, resetting all blocks to zero. ![]() Because an ATA trim will be performed by NTFS with Windows 7 or when formatting using Ext4 from mke2fs 1.41.10 or XFS from xfsprogs 3.1.0, the secure erase procedure is no longer necessary. ![]()
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