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I have a mac powerbook running 10.5.1 which someone partitioned. On the &quot;system&quot; partition which contains my apps etc., I have very little space left. I'd like to un-partition it and have been told I must reinstall the system software to do so. I know how to backup things like my document, but how do I back up all of my emails in Mail, as well as software that I downloaded and don't have the &quot;software keys&quot; for anymore, and software that I can't find the original discs for, etc. etc.<br />
I want to perform a clean install but don't want to lose all of my stuff. Thanks!
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I have a mac powerbook running 10.5.1 which someone partitioned. On the "system" partition which contains my apps etc., I have very little space left. I'd like to un-partition it and have been told I must reinstall the system software to do so. I know how to backup things like my document, but how do I back up all of my emails in Mail, as well as software that I downloaded and don't have the "software keys" for anymore, and software that I can't find the original discs for, etc. etc.
I want to perform a clean install but don't want to lose all of my stuff. Thanks!

How do I backup everything before reinstalling the system?

Apple's early computers ran on a variety of operating systems, including a Pascal version and one based on CP/M, before releasing its ProDOS with the advent of its 16-bit computer. With the release of the Lisa, which had its own OS, Apple and computing entered the graphical age; it was followed by the Macintosh, which offered a series of "System" operating systems. Other Mac operating systems included PowerPC until Apple acquired NeXT and folded it into the Mac OS. Current operating systems for Apple devices are Mac OS-X and iOS.

Apple OS

Mac OS X is the desktop operating system from Apple Inc., found on Macintosh computers. OS X consists of a Mach/BSD-based kernel, operating system interfaces primarily based on FreeBSD and additional frameworks (written in C, C++ and Objective-C providing user interface and application-level services.