2 restoring old post
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I recently purchased a secondhand MacBook Air for work purposes; the laptop was shipped to me with a fresh install of OS X. I do not know the prior owner or what they used the laptop for, and thus I need to verify that all software and data on the solid state drive is both erasederased and irrecoverableirrecoverable before setting up a fresh OS X install.

I plan to do the following:

  1. Encrypt the drive currently holding the placeholder OS X system using Filevault 2 and a strong password.

  2. Reboot to an OS X install thumb drive, and erase the hard drive using Disk Utility. I assume this will securely erasing the FileVault key, thus rendering the old data impossible to decrypt.

  3. Reinstall Mac OS X over the old (erased) encrypted volume, and set up FileVault 2 to encrypt this new install.

Encrypt the drive currently holding the placeholder OS X system using Filevault 2 and a strong password.

Reboot to an OS X install thumb drive, and erase the hard drive using Disk Utility. I assume this will securely erasing the FileVault key, thus rendering the old data impossible to decrypt.

Reinstall Mac OS X over the old (erased) encrypted volume, and set up FileVault 2 to encrypt this new install.

Is this sufficient to ensure that no relic software or hard drive data from the old drive owner is recoverable?

I recently purchased a secondhand MacBook Air for work purposes; the laptop was shipped to me with a fresh install of OS X. I do not know the prior owner or what they used the laptop for, and thus I need to verify that all software and data on the solid state drive is both erased and irrecoverable before setting up a fresh OS X install.

I plan to do the following:

  1. Encrypt the drive currently holding the placeholder OS X system using Filevault 2 and a strong password.

  2. Reboot to an OS X install thumb drive, and erase the hard drive using Disk Utility. I assume this will securely erasing the FileVault key, thus rendering the old data impossible to decrypt.

  3. Reinstall Mac OS X over the old (erased) encrypted volume, and set up FileVault 2 to encrypt this new install.

Is this sufficient to ensure that no relic software or hard drive data from the old drive owner is recoverable?

I recently purchased a secondhand MacBook Air for work purposes; the laptop was shipped to me with a fresh install of OS X. I do not know the prior owner or what they used the laptop for, and thus I need to verify that all software and data on the solid state drive is both erased and irrecoverable before setting up a fresh OS X install.

I plan to do the following:

Encrypt the drive currently holding the placeholder OS X system using Filevault 2 and a strong password.

Reboot to an OS X install thumb drive, and erase the hard drive using Disk Utility. I assume this will securely erasing the FileVault key, thus rendering the old data impossible to decrypt.

Reinstall Mac OS X over the old (erased) encrypted volume, and set up FileVault 2 to encrypt this new install.

Is this sufficient to ensure that no relic software or hard drive data from the old drive owner is recoverable?

1
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SSD erasure strategy for a secondhand laptop

I recently purchased a secondhand MacBook Air for work purposes; the laptop was shipped to me with a fresh install of OS X. I do not know the prior owner or what they used the laptop for, and thus I need to verify that all software and data on the solid state drive is both erased and irrecoverable before setting up a fresh OS X install.

I plan to do the following:

  1. Encrypt the drive currently holding the placeholder OS X system using Filevault 2 and a strong password.

  2. Reboot to an OS X install thumb drive, and erase the hard drive using Disk Utility. I assume this will securely erasing the FileVault key, thus rendering the old data impossible to decrypt.

  3. Reinstall Mac OS X over the old (erased) encrypted volume, and set up FileVault 2 to encrypt this new install.

Is this sufficient to ensure that no relic software or hard drive data from the old drive owner is recoverable?