In order to prevent this issue, a script can be run after waking up from sleep: When waking up from sleep, the SSD will most likely have lost its "frozen" status, leaving it vulnerable to ATA SECURE ERASE commands like those described in /Memory cell clearing. Setting the SSD state to "frozen" after waking up from sleep If you intend to erase the SSD, see Securely wipe disk#hdparm and /Memory cell clearing. Warning: Do not try to change the above lock security settings with hdparm unless you know exactly what you are doing. For the Intel DH67CL/BL motherboard, for example, the motherboard has to be set to "maintenance mode" by a physical jumper to access the settings (see, ). A lot of notebooks have support, because it is required for hardware encryption, but support may not be trivial for a desktop/server board.
#GENTOO CHECK SSD HEALTH PASSWORD#
If you intend to set a password to a "frozen" device yourself, a motherboard BIOS with support for it is required. The above output shows the device is not locked by a HDD-password on boot and the frozen state safeguards the device against malwares which may try to lock it by setting a password to it at runtime. Operations like formatting the device or installing operating systems are not affected by the "security freeze". Both result in the device's password security settings to be set to frozen, as shown in below output:Ĥmin for SECURITY ERASE UNIT.
Likewise some SSD (and HDD) BIOS' are set to "security freeze" in the factory already. Some motherboard BIOS' issue a "security freeze" command to SATA devices on initialization.
#GENTOO CHECK SSD HEALTH MANUAL#
In this case, see Securely wipe disk#Flash memory for further information and examples to perform a manual wipe. if you do not trust the manufacturer or are wary of potential bugs. Note: If the reason for the reset is to wipe data, you may not want to rely on the SSD controller to perform it securely, e.g. The reset can be accomplished by following the appropriate procedure denoted in SSD memory cell clearing, either for #SATA or #NVMe SSDs. Write performance is known to degrade over time even on SSDs with native TRIM support: TRIM only safeguards against file deletes, not replacements such as an incremental save. On occasion, users may wish to completely reset an SSD's cells to the same virgin state they were at the time the device was installed, thus restoring it to its factory default write performance.
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