IBM 150 Manual Do Utilizador

RS/6000 43P 7043 Models 150 and 260 Handbook

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After the firmware has passed control of the system to AIX, problems which 
occur are, in most cases, the same as for any other RS/6000. In this section, 
several problems during booting are discussed.

While AIX supports installation from external CD-ROM, the CD-ROM drives, 
7210-001 and 7210-010, cannot be used as a boot device.

The AIX booting process on the PCI-based RS/6000 is similar to the Micro 
Channel-based RS/6000 systems. This means that the boot process can be 
monitored by the LEDs. If the system hangs, you will have to perform system 
maintenance and try to determine the cause of the problem by using the 
standard AIX LED recovery procedures. Typically, the procedure to follow is:

1. Boot the system into Maintenance mode by using either a CD-ROM or 

bootable tape.(if your are booting from a tape make sure that the 
PROMPT stanza in the bosinst.data is set to YES. Otherwise, a mksysb 
restore will occur, unless interrupted as described in 8.3.5.3, “How to 
Interrupt a Non-prompted Installation” on page 226.

2. Select the option to access the root volume group and start a shell before 

the file systems are mounted.

3. Check the root volume group file systems:

    fsck -y /dev/hd1

    fsck -y /dev/hd2

    fsck -y /dev/hd3

    fsck -y /dev/hd4

    fsck -y /dev/hd9var

4. Format the Journaled File System (JFS) log:

    logform /dev/hd8

Answer YES when asked if you want to destroy the log.

5. Type 

exit

 to mount the root file systems.

6. Check the inittab file for any entries which may be causing problems.

7. Check for any full file systems (particularly /, /tmp, /var and /usr).