Appendix C Using the CompactFlash Disk
Working with a CompactFlash Disk
Step 3 Verify that the file fun1 is deleted:
System# dir
Directory of disk0:/
No files in directory.
48755200 bytes total (48742912 bytes free) System#
Enabling Booting from a CompactFlash Disk
This section explains how to enable booting from a CompactFlash Disk.
To enable booting from a CompactFlash Disk, set configuration register bits 3, 2, 1, and 0 to a value between 2 and 15 in conjunction with the boot system [disk0: ]filename configuration command. This section includes only descriptions of boot commands specific to the CompactFlash Disk. (You can use either the slotn: argument or the diskn: argument for boot commands.)
Following are definitions of the various CompactFlash
•boot system flash disk0: or boot system
•boot system flash disk0:herfile or boot system
As you enter boot commands, pay attention to how you use the Spacebar, which influences the way your system interprets the commands. Also, ensure that you define the entire path to a file as you enter the boot commands; otherwise, the system might not be able to find the file.
For example, notice the difference in the following correct and incorrect commands:
System(config)# boot system flash disk0:myfile
Based on the preceding correct command, the system boots the file specified (myfile).
System(config)# boot system flash disk0: myfile
Based on the preceding incorrect command, the system finds the filename field blank because there is a space after disk0:. In this case, the system ignores the filename argument and boots the first file on the CompactFlash Disk, which might not be the file called myfile.
Use the following procedure to enable booting the file myfile from a CompactFlash Disk:
Step 1 Enter configuration mode and specify an image filename in the CompactFlash Disk slot from which to boot by using the configure terminal command, as follows:
System# configure terminal
Enter configuration commands, one per line. End with
System(config)# boot system flash disk0:myfile
Step 2 Enable the boot system flash disk0:myfile command using the
System(config)#
This command, with the hexadecimal value 0x2102, results in the following:
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