If partitioning a drive with Disk Utility gives you unmount or resource busy errors, there may be workarounds you can use.
Along with the use of incompatible formats, errors can prevent a drive from being written to.
The disk partitioning utility built into Windows 7 doesn't let you extend partitions to the left, so to enlarge your leftmost partition, you need a free repartitioning program.
You can create a standalone OS X installation drive without having purchased OS X from the App Store.
If your system hangs when going into Safe Mode, or will not load into Safe Mode at all, there are a couple of things you can do to fix the situation.
This week, readers sent in questions on topics including inability to boot and how to test a nonfunctional external DVD player.
Without an intact Recovery HD partition on your Mac, you will not be able to use Apple's FileVault disk encryption feature.
Questions answered about preparing for and upgrading to Mountain Lion.
How to address a corrupt hard drive before upgrading OS X, and other questions answered.
If you are installing Lion on a RAID array or other custom drive setup, you may not be able to enable FileVault and other advanced volume management features.