• anyone done a migration from an internal drive to an external one?

    I'm looking to do a clean install of el capitan or sierra onto an external drive, then migrate my current boot drive to it, as there's a load of leftover bits from me upgrading from 10.6.8 to current versions of the osx when I changed computers, and I'm hoping this clean up will improve performance.

    Is this possible? Anyone done it? Since I'm not migrating from computer to computer, but rather computer to drive, think there may be complications that I'm not seeing...

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