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The Custom (advanced) installation type shown in Figure 1-3 is a workable

choice for upgrading Windows XP and older machines, despite the explana-

tion beneath it. In fact, the bit that reads, “This option does not keep your

files, settings, and programs” is a flat-out lie. (It really means that it won’t

migrate your stuff.)

When you perform a Custom installation on, say, Windows XP, setup moves

your old Windows, Program Files, and Documents and Settings folders into a

new folder called Windows.old so it can install Windows 7 on the drive un-

hindered. Other folders (e.g., c:\Dave’s Personal Stash) are left alone. None of

your data is deleted, and provided you have enough free disk space (at least

11 GB), setup performs what’s called a “parallel installation,” where Windows

7 is placed alongside your old operating system.

A parallel installation isn’t the same as a dual-boot setup.

After installing Windows 7 in this way, the old version will no

longer be bootable. If you want to keep both versions of Win-

dows bootable, you’ll need more than one hard disk or hard

disk partition, as described in the section “Set Up a Dual-Boot

System” on page 26.

The end result is effectively the same as installing on an empty hard disk as

described in the previous section, except that all your old data stays on the

drive. It’s not quite as convenient as WET, but it potentially takes less time,

and you don’t have to worry about missing any files because nothing from the

old installation is deleted. Here’s how you do it:

1. Boot your PC into the old version of Windows, and insert your Windows

7 DVD.

If your old Windows installation won’t start, boot off the DVD

described in the previous section. But doing so will permit

setup to make changes to your partitions, making it possible

to delete your primary partition and lose all your data.

2. When the Install Windows page appears, click Install now.

3. If you have a working Internet connection and wish to do so, click Go

online to get the latest update for installation. Or, if you prefer, click

Do not get the latest updates.

4. Choose your Windows 7 edition from the list and click Next; make sure

to pick the one for which you have a valid license key, or you’ll have to do

this all over again.

Install Windows 7 | 23

Get Started with

Windows 7

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