Chapter 19: Managing Disks and Drives
You can compress a file or folder by completing these steps:
1. In Windows Explorer, right-click the file or folder that you want to compress
and then select Properties.
2. On the General tab of the Properties dialog box, click Advanced.
3. In the Advanced Attributes dialog box, shown in Figure 19-17, select the “Com-
press contents to save disk space” checkbox and then click OK.
4. For an individual file, Windows Vista marks the file as compressed and then
compresses it. For a folder, Windows Vista marks the folder as compressed and
then compresses all the files in it. If a folder contains subfolders, Windows Vista
displays the Confirm Attribute Changes dialog box, shown in Figure 19-18:
• To compress only the folder and the files it contains, select “Apply changes
to this folder only” and then click OK.
• To compress the folder, subfolders, and all related files, select “Apply
changes to this folder, subfolders and files” and then click OK.
Expanding a ﬁle or folder to remove compression
If you later decide that you no longer want to compress a folder or file, you can remove
compression. Before you do this, you should ensure that the drive has adequate free
space to accommodate the expanded files. Typically, you’ll need at least 50 percent
more free space on the disk to expand its contents successfully. If a compressed folder
currently uses 2 GB of space, this means you’d probably need about 1 GB of free space
to expand the folder successfully.
Figure 19-17. Compressing the disk