Apple Mac OS X Server User Manual download pdf (Page 38)

38 Chapter 6

Using the System Disk Program to Select a Startup Disk

System Disk is a Mac OS program that allows you to select which hard disk your computer

will start up from. You can’t use the Mac OS Startup Disk control panel to select a Mac OS X

Server disk as the startup disk.

To make a Mac OS X Server disk the startup disk, follow these steps:

1 Open the System Disk application.

The program is provided on the Mac OS X Server CD.

2 In the list of devices, select your Mac OS X Server hard disk.

3 Click Save and restart the computer.

Repairing Mac OS X Server Disks

You use the fsck command to repair corrupted or damaged hard disks (in Mac OS Server

format). Normally this command runs automatically, but in some circumstances you need to

run it manually.

1 Restart the computer, then hold down the S key until your screen displays several scrolling

messages.

This starts up your computer in single user mode, which allows access to the command line.

2 At the # prompt, enter fsck -y and press Return.

The fsck program checks and repairs your hard disk. If you see an error message, enter the

command again. You may have to do this a few times to repair all the damage. Recovered

ﬁles found during this process are put in a top-level directory called “lost+found,” which is

visible when you log in as Administrator.

The system cleans up temporary ﬁles (for example, those in the /tmp and /var/tmp

directories) during restart; this is often sufﬁcient for the computer to start up.

You can continue to clean up the disk by deleting excess data.

m To delete ﬁles to free up available space on your hard disk, enter

mount -uw / then use

the rm command (

filename

) to delete ﬁles you are sure you no longer need.

m To see a list of ﬁles, enter

ls.

m To change directories, enter cd

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Apple Mac OS X Server User Manual Page 38