Q: Snow Leopard to Yosemite
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Oct 27, 2014 8:24 AMby jason269,Hi, tobystevens75.
Thank you for visiting Apple Support Communities.
Here is a troubleshooting article that I would recommend going through when experiencing this issue.
Troubleshooting the Mac App Store
http://support.apple.com/kb/TS3624
Cheers,
Jason H.
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Oct 27, 2014 8:47 AMby FatMac>MacPro,tobystevens75 wrote:
Am trying to upgrade my macbook pro (13", early 2011) from Snow Leopard to Yosemite and it won't let me. When I click on 'Upgrade' in the app store, nothing happens. My machine has 8Gb RAM and 13Gb available on the Hard Drive, so should upgrade ok I think. Bit stuck, anyone got any ideas?
If you only have 13GB of free space on your HD, the download itself will take up nearly half of that and there simply isn't enough room to install Yosemite. You need to free up some space. I don't think the App Store is quite sophisticated enough to make that judgement at that distance, but you'll still need to give Yosemite some room and then try again.
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Nov 5, 2014 3:30 PMby FatMac>MacPro,tobystevens75 wrote:
Thanks - have tried freeing up some more space (I have around 21Gb free now), but to no avail
To be sure that the App Store is otherwise working, have you tried downloading anything else with success?
Also, while 21GB is an improvement, there also needs to be room on the HD for a hidden partition. Your Mac came with DVD's that you could boot from and install the OS from. Snow Leopard was the last OS Apple did that for; ever since Lion, the OS has been downloaded, and for Recovery purposes, a hidden, bootable partition is created as part of the install process from which you can boot in order to repair or replace the OS on your regular boot partition. Room has to be made for that, too.
If you have any videos on your HD, they can take up a lot of space. You can get USB flash drives really cheap these days, and moving those files onto the flash drive and then deleting them should make more space.
BTW, if you ever succeed in downloading Yosemite, it will go to your Applications folder and then the installer will start and wait for instructions. If, instead of installing, you quit the installer first, you can make a copy of it before running it because when the installation is done, the installer file is deleted from your Applications folder and you'd have to start all over if you needed it again.
