Create a test partition to install OS X Yosemite DP1

If you can't wait any longer and you want to try the benefits of this premature version of OS X 10.10 Yosemite, you can do it now by creating a test partition. This will help you to do it without having to update your main system because this version will still have too many incompatibilities with many applications and some other important bug.

It is no less true that it also includes a series of new features and extra functionalities that I have already been testing personally and most of them work without problems, although the overall system performance It needs to be polished on some computers, anyway, as I have said and I will point out again, it should only be installed as a secondary system for testing if you are a developer or as a curiosity if you are a user. Let's see now what are the steps to carry out.

DOWNLOAD THE IMAGE

The download of OS X 10.10 is reserved only for developers through the Mac Dev Center but this time Apple has also given the opportunity to download the first million users who want to try it just by joining their beta program which you can access from this link. It should be noted that this refers only to betas, that is, it is now in an alpha state so we will have to wait a bit.

However, there are also other less safe methods but equally reliable as .torrents or direct download to download this DP1.

CREATE PARTITION

For this we will only have to access the disk utility and click on the main disk unit (not on Macintosh HD) but on the description of the disk, in my case as you will see from the image it is »251 GB APPLE SSD ...» e go to the partition tab. At that time we will click the "+" button In the lower part, we will give it a name and the space that we want. Being a test, I do not advise "eating" too much space to the main partition.

If the options are grayed out and they don't let you create another partition, you may very well have Windows installed on a BootCamp partition where the system can be seen unable to move certain boot files For this reason, it leaves this option unusable, in this case we can use an external USB 3.0 disk to install it in it and at least have a decent load performance if you do not want to delete or touch anything.

INSTALLING OS X 10.10

This is the simplest part, once we have downloaded the .dmg file either from the Mac App Store, the Developer Center or any other method, we will only have to open the image on our main system and run the installer. From here select another disk other than Macintosh HD, in this case the one we have created and proceed to install it.

At this point you just have to wait for the system reboots and start to install the system normally, during the process you will see that it will restart a few times but it is normal. Depending on your album, it may last from 8 to more than 20 minutes of waiting.