System Requirements For Os X Sierra Part 4. However, you will need up to 80GB of space if you are installing the software on a real world PC environment. If you are trying out Mac OS X El Capitan on a virtual machine, or on a partition, you may need as much as 16GB minimum for the installation and running of the software- this space will accommodate the applications installed. The minimum 8GB does not provide the ideal amount of free space to effectively run Mac OS X El Capitan for a long time, but the space will help you complete its installation. The Drive Space - Your Mac device will require a minimum of 8GB of drive space to function at its optimal.Though this could still be slow, a 4GB RAM size is preferred, and even larger RAM will make the Mac OS X El Capitan perform at faster rates.

RAM - The minimum RAM requirement for optimal performance and installation of Mac OS X El Capitan is 2GB.The Optimal Requirements for Mac OS X El Capitan How To Upgrade From Os X Disk First Aid while the machine is booted normally (not recovery mode) will report that everything is. I do not have an explanation on why this works, except that offline disk first aid forces a TRIM operation on the SSD. The more the RAM memory for instance, the faster your Mac OS X El Capitan software runs on your system, in addition, a faster SSD Disk drive will boost the performance of the software on your Mac. What seems to remedy it (at least for some time) is to reboot into recovery mode, run disk first aid, then restart again. However, system speed requirements are general for all Mac devices, and the newer the Mac device, the faster the software and apps will run. The optimal requirements for a better performance are quite different.

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