1. Macost's Avatar
    Hi, I have 2 partitions on my Mac HDD but when I hold the option key while starting up. It only shows the HDD and I can't chose a partition. How come?

    I uploaded a screenshot, you see my HDD named 'Yosemite' has two partitions 'Yosemite' and 'Macintosh HD'. I can't chose 'Macintosh HD' when starting up.

    Partitions not showing up on startup manager-schermafbeelding-2014-07-27-om-15.39.05.png
    07-27-2014 09:40 AM
  2. Just_Me_D's Avatar
    Did you follow the instructions found via the following link?

    How to partition your Mac to test OS X Yosemite | iMore
    07-27-2014 11:25 AM
  3. Macost's Avatar
    Yes that's how I installed Yosemite.

    I changed my startup disk via system preferences so I can boot into my other partition.
    07-28-2014 06:40 AM

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