So once data is deleted, find the place a file used to reside in is like putting together a multi-million piece jigsaw puzzle (all before any garbage collecting the drive may decide to do). The data isn't necessarily encrypted, but it is distributed data over many locations in order to perform as few writes as possible to a single location (both for performance and for drive longevity). It is pretty difficult to recover data from an SSD.As Trane Francks explained, recovering data from an SSD is, by default, pretty difficult. This issue was addressed by removing the “Secure Empty Trash” option.Glenn Fleishman, gives a good overview of this in " How to replace El Capitan's missing Secure Empty Trash." The fact that, currently, the only DoD/NSA approved SSD sanitation procedure is smelting or shredding the drive into a fine powder somewhat echoes the challenge in being able to wipe a drive, for sure. Does anyone know if this is really true? Could you point me to something verifying that Apple's SSD's do this?I'm a couple years late to the party, but it might be worth pointing out that Apple (who has now entirely remove "Secure Erase" options from the Disk Utility app) hasn't really removed the option because it "isn't necessary" — according to its El Capitan security release notes, they did it because they can't guarantee a secure erase:Description: An issue existed in guaranteeing secure deletion of Trash files on some systems, such as those with flash storage.
![]() ![]() ![]() Changes are differentially uploaded to cloud backup. The VM are synchronized to external USB SSD so if the laptop or your bag is taken/lost during travel then it's likely that you atleast have one these so you can just buy another ssd or laptop and resume work as if nothing happened. Hard to say if it's significant or not without actual measurements but I have measured on desktop that bitlocker does affect ssd perf a bit so it's expected theres some impact.Also since I separately encrypt the VM's, the system actually has 4 layers of encryption : ssd internal, host bitlocker, vm guest bitlocker and finally folder encryption. If you have ultrabook running at TDP cap like Surface, then run some VM's in it, there could be some battery waste from doing encryption twice. Depending on the config (ultrabook vs desktop) there might be some perf and power saving features. If you really cannot take the chance, then purchase a replacement HDD and trade it in keeping the SSD.I also agree with njboot: Linc knows his stuff.The correct answer of course is that instead of "secure erase for ssds" there should be a feature called "replace ssds hardware encryption key".Then, once the SSD where user did not use separate encryption goes into read-only state, you can send the command to replace the key.For performance oriented use it would also be preferable that bitlocker would have option to use only the hardware level encryption if support is present. The modern solution for quickly and securely erasing your data is encryption. Modern devices have wear-leveling, block-sparing, and possibly-persistent cache hardware, which cannot be completely erased by these commands. Secure erasing makes it harder toRecover data using "file recovery" software.This kind of secure erase is no longer considered safe. Home design studio complete for mac v175 trialConsider using APFS encryption (FileVault).
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