Installing OpenLinux 42 Getting Started Guide CAUTION: During most of the installation, you can use the Back button to return to a previous screen of the Installation program to review or change your selections. However, watch for key steps such as formatting your hard disk. Although you can return to previous screens, you cannot undo the format operation. Depending on the selection that you make in this screen, proceed as directed here: • If you selected Custom in the previous screen (see Figure 20), the next screen is shown in Figure 21. Continue with “Using the Custom Option to Prepare a Hard Disk” . • If you choose Entire Hard Disk, the next screen is shown in Figure 22. Continue with “Selecting an OpenLinux Hard Disk” . • If you choose Prepared Partition, the next screen is shown in Figure 23. Continue with “Defining your OpenLinux Filesystem” .