I have MacBook 2.1 Intel Core 2 Duo OS 10.6.8 want to install HP Officejet Pro 6835 which requires OS 10.7 higher. How can I do this? Possible? Or Is it possible to install 10.7 upper to my Macbook 2.1?

Choose About this Mac from the Apple menu, check if the computer has at least 2GB of RAM, and if it does, click here and order a download code for Lion 10.7.

Back up your data and check your applications for compatibility before upgrading. In particular, Mac OS X 10.7 and newer don't support PowerPC programs such as versions of Microsoft Office prior to 2008.

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Lion is the highest version your can install. You need to have 2 GBs of RAM and be running Snow Leopard 10.6.8.

Upgrading to Lion

If your computer does not meet the requirements to install Mavericks, it may still meet the requirements to install Lion.

You can purchase Lion at the Online Apple Store. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.

Lion System Requirements

1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,

or Xeon processor

2. 2GB of memory

3. OS X v10.6.6 or later (v10.6.8 recommended)

4. 7GB of available space

5. Some features require an Apple ID; terms apply.

Yes.

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