Xerox t 180 manual Performing a full sysgen, Choosing a format command

SYSGEN AND SYSGEN-RELATED PROCEDURES

Performing a full sysgen

Use the information given below when performing a full sysgen.

When to use a full sysgen In the full sysgen procedure, all system disks are formatted and the operating system software is installed on the system disks. A full sysgen is normally performed in the following situations:

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A new system is installed

A system disk is replaced

Read errors or other disk problems have occurred

When required for a specific system or patch.

Note: When performing an offline (tape) sysgen, make sure the system is offline.

Backing up user files It is important to back up all user files.

Caution: If the disk being formatted contains user files, be sure to back up those files before formatting because they will be deleted from the disk.

Sysgen media A full sysgen can be performed from tape, cartridge, or host. The step-by-step procedures provided in the following section are for a full sysgen from any medium.

Choosing a format command

Table 4-1 lists the differences between the FORMAT and ERASE commands used for formatting the system disks prior to sysgen.

Table 4-1.Differences between format and erase commands

FORMAT command	ERASE command
• Deletes all files except	• Saves both the MBAIS and
the MBAIS file	bad block files.
• Performs a sector check	• Does not perform a new
• Flags any new bad block	sector check.
areas.
You must use when:	Use if you are confident of your
• Replacing a system disk	system disk integrity.
• Installing an additional
disk into the system

4-4 XEROX DOCUPRINT 180 LPS SYSTEM GENERATION GUIDE