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- #Mac disk utility secure erase time how to
- #Mac disk utility secure erase time mac os x
- #Mac disk utility secure erase time upgrade
- #Mac disk utility secure erase time free
In both cases, everything not from Apple will be erased.
#Mac disk utility secure erase time upgrade
#Mac disk utility secure erase time mac os x
You’ll notice this feature is available in all versions of Mac OS X with the exception of El Capitan, where it was removed from Disk Utility presumably because many of the popular Macs ship with SSD drives by default. Nonetheless it’s worth mentioning for the sake of being thorough. Finally, if you’re absolutely determined to complete this process on an SSD, you can use this workaround to accomplish secure erase on SSD volumes, though it’s really not necessary due to how SSD drives function, and it’s also not recommended because it places unnecessary writes on an SSD drive, which could reduce it’s potential lifespan. This can also provide for a delayed alternative to using the secure empty Trash function of OS X if you decide later that you want to prevent the recovery of some files that were deleted.
#Mac disk utility secure erase time free
This makes it a great solution for situations where you clean up an existing OS X installation for a new owner and want to preserve things like installed applications, but do not want any of your deleted personal data to be potentially recovered by anyone.Īgain, this is largely unnecessary for most users, but it is good practice to erase free space on any traditional hard drive that will have ownership transferred. focusing on files that have been deleted through Trash), and has no impact on the hard drives other contents. Of course the difference here is that this trick focuses only on securely erasing the free space (i.e. These options are the exact same as what’s presented by general secure formatting of an entire hard drive. Keep in mind that the latter two options take longer to complete, because they are performing the same overwrite task either 3 times or 7 times.
#Mac disk utility secure erase time how to
Here is how to erase free space on a Mac Hard Disk with Disk Utility:
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Erasing Free Space on Hard Drives in Mac OS X This option is not available for flash-memory based SSD models (like those bundled within the MacBook Air, Retina MacBook Pro) because those drives use the TRIM function to quickly remove and recover blocks instead, which has the side effect of automatically preventing file recovery fairly quickly – often within 10 minutes of emptying the Trash. Yes, this only works on traditional hard drives of the spinning platter variety, which is typical for MacBook Pro, Mac Mini, and iMac models, and is the case with most external hard drives used for backups. For most users this is an unnecessary procedure, but if you plan on transferring ownership of a traditional hard drive or computer to someone else and you don’t want to securely format the entire hard drive first, this provides an alternative option that instead allows you to securely overwrite and remove only the files that have been deleted.
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The Mac OS X Disk Utility app provides an ability to erase free space on traditional hard drives, which overwrites vacant disk space on the drive to prevent any potential recovery of deleted files (that is, files that have been removed traditionally, rather than through secure methods).