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What's the optimal formatting for a MacBook disk?

My disk seems to be formatted as a LVG (Logical Volume Group) and it seems super slow...

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Optimal is what it's formatted as when you get the machine.
GUID/HFS+

LVG/Core Storage is necessary if you ever enabled FileVault. [Some updates to Yosemite also seem to have triggered that conversion too]

Try Blackmagic Disk Speed Test to see what speeds it's actually achieving.

  • Blackmagic Disk Speed Test is basically showing me 70MB/s read and write, doesn't look good.... – user3306356 Mar 29 '15 at 7:52
  • that's not terrible for a HD, especially if it's only a 5200 rpm unit. Most of my HDs here are only pulling between 70 & 90MB/s, the fast one at 145, my SSD at 260 – Tetsujin Mar 29 '15 at 8:06

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