Question on High Sierra install on ext. SSD

Discussion in 'macOS High Sierra (10.13)' started by ramcell, May 11, 2018.

  1. ramcell macrumors newbie

    Oct 4, 2015
    I have External SSD with 2 bootable Sierra partitions connected by Thunderbolt to my iMac 5K . If i install High Sierra on one partition what will happen to the other partition ? Will Sierra on the other partition still be there and bootable ? Will my internal SSD Sierra boot drive be affected ?
  2. chabig macrumors 603

    Sep 6, 2002
    All untouched partitions will remain untouched. Everything will work fine.
  3. oldhifi, May 11, 2018
    Last edited: May 11, 2018

    oldhifi macrumors 65816


    Jan 12, 2013
    Yea I like to dual boot High Sierra on my Imac HD and El Captain on my ext La Cie, works great..

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