When Snow Leopard came out, it brought with it promises of a 64-bit transition, with almost all included applications completely re-written in 64-bit and support for a theoretical
64TB 16 EB (yes, exabytes!) of RAM.
One thing that most people don’t know, however, is that most 64-bit Macs don’t boot up directly into a 64-bit mode. This doesn’t affect applications, which are still capable of running in 64-bit, however, you will be booting by default in to a 32-bit kernel. Fortunately, this is easy to fix…
When you are booting your Mac, hold down the ‘6’ and ‘4’ keys simultaneously. This will force your Mac to boot up in to a 64-bit kernel, and allow you to take advantage of its true potential.
To check whether your system is running in 64-bit mode, go to About This Mac -> More Info -> Software -> Extensions, and you can take a look at everything that is running in either 64 or 32 bit mode.
Have you got any Windows or Mac tips to share with us? Let us know in the comments, or you email me at email@example.com.
Hoping to study Computer Science at University in the near future, you’ll seldom see John without a computer in touching distance! His interests include building computers, reading all sorts of literature and of course writing for Zath to keep you updated on all the latest in the world of tech! You can follow John on Twitter as @british_geek.