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How can encrypted Apple DMGs be so fast to open?

1 vote
0 answers
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On remote drive I have an encrypted .dmg and the same files in a gpg encrypted tar file. The DMG opens within seconds, but to access the tar file, I first need to decrypt it, in this 10 minutes, and then expand it, another 10 minutes. How can the Apple DMG be so fast? or where I read more about how it works?
Asked by OrigamiEye (448 rep)
Apr 1, 2020, 12:42 PM