Will I loose everything if I install El Capitan GM over Yosemite?

Discussion in 'OS X El Capitan (10.11)' started by aide199, Sep 10, 2015.

  1. aide199 macrumors member

    Jul 29, 2014
    I currently have Yosemite installed on my iMac - If I install the El Capitan GM will I loose all my installed programs and configuration or will it just do an upgrade?

    Thanks in advance
  2. MacManiac76 macrumors 65816


    Apr 21, 2007
    White Mntns, Arizona
    It will simply do an upgrade unless you intentionally wipe the drive first and then install.
  3. dougpochin macrumors newbie


    Sep 10, 2015
    I lost all the emails in my inbox!
  4. dougpochin macrumors newbie


    Sep 10, 2015
  5. Shirasaki macrumors 604


    May 16, 2015
    Maybe upgrade destroys your email library.
  6. mikecwest macrumors 6502a


    Jul 7, 2013

    You should be fine, but keep in mind, that is possible that apps may "break" in an OS update. If you update correctly, it is unlikely that you would lose any documents or data.

    One exception might be iPhoto, as it was replaced with Photos. You might lose that.
  7. tokyotony macrumors newbie

    Dec 20, 2008
    Which email provider are you using and if it is iCloud, do you have iCloud services turned on?
  8. ABC5S Suspended


    Sep 10, 2013
  9. fl1pper, Sep 16, 2015
    Last edited: Sep 16, 2015

    fl1pper macrumors newbie

    Jan 20, 2014
    You'll have to re-import your mailboxes. They're still right there in ~/Library/Mail. Also, you'll lose any changes you might have made to your private/etc/hosts file. (That doesn't affect a lot of folks, of course, but, if you've modded it, at all, better have a backup). Accounts will be missing in Mail, also. You'll also lose VPN access through any of the major VPN clients. You can set up a VPN tunnel to a known server, with authentication, in the usual Sys Prefs/Network, but you'll not have any extra features that are normal in most decent VPN clients, namely: high end encryption, KILL on disconnect, access to server-specific Port Forwarding, etc. There's more, no doubt. On the bright side, many parts of the OS are running smoother and quicker. [EDIT: Two of my VPN clients work (99%) in Chrome, but not at all when using Firefox or Safari, strange...]
  10. Jennism macrumors member


    Aug 14, 2015
    I've heard from other users of the that they still have iPhoto and it still works. It's also available to download in the Purchased tab of the App Store. I've moved on to photos myself. It did take me a while to convert, but it really is so much faster. For some reason in Yosemite it locks up my trash. If I try to empty trash with Photos open it just locks up and won't empty until I close Photos app. On El Capitan, it works just fine.

    A clean install, of course iPhoto will be gone. It was never apart of the preloaded apps before. Yet Photos is now.

    But yeah because apps could break, once the final release is out, I will be installing on another partition, just as I did for the PB. I'll transition over with the working apps. And once Yosemite is not needed anymore I'll ditch it.
  11. patternjake macrumors member


    Sep 17, 2015
    Nope, you won't lose a thing. Make sure you do a Time Machine backup FIRST. (The installer will even tell you to do this).

    You can still run iPhoto by Showing Package Contents > Contents > MacOS > iPhoto (Terminal).
  12. hoppo1 macrumors newbie


    Oct 7, 2015
    I lost all emails as well, now deciding wether to wait for Apple to fix the glitch or uninstall Capitan

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