Module4 Troubleshooting a PA-RISC System Boot Disk

PDC on the boot-ROM chip，功能是硬件自检，读取stablestorage,从LIF区域装载ISL

Stable Storage 非易失存储，存储硬件路径，自动搜索和自动启动的配置参数。还有低级别的诊断信息，这个部件损坏可能导致不能启动，但是可以通过PDC交互过程来解决，命令有search  path boot  config等。

ISL  定义，装载和将控制权转到第二装载器

HPUX 

LIF header PVRA   BDRA   LIF area   VGRA   Lvol1   Lvol2   Lvol3   Extents   BBRA

LABEL contains pointers to the starting points and sizes of the boot-relevant logical volumes.To load the operating system,the HP-UX secondary loader uses information found in the LABEL file.LABEL file is maintained by the lvlboot and lvrmboot command

 

Repairing Damage –Missing /Corrupt LIF Utilities

1.       boot from the support media

2.       from the Main Menu,select “Run a Recovery Shell”

3.       Verify the hardware path to your boot disk

4.       From the Recovery menu, select

Mount the root disk and exit to a shell only

5.       From the Recovery shell,execute the following commands

Loadfile chroot

Chroot /ROOT /sbin/sh

Vgchange –a y/dev/vg00

Mountall

Mkboot /dev/rdsk/

(lvlnboot –b /dev/vg00/lvol1

lvlnboot –s /dev/vg00/lvol2

lvlnboot –r /dev/vg00/lvol3

lvlnboot –d /dev/vg00/lvol2

lifcp /dev/rdsk/cxtydz:AUTO -  (查看AUTO文件的内容，如果不是hpux,执行 mkboot –a “your_startup_string” /dev/rdsk/cxtydz )

…

reboot

Repairing Damage – Corrupt LABEL File

1.       Boot from the support media

2.       From the Main Menu,select “Run a Recovery Shell”

3.       Verify the hardware path to your boot disk

4.       From the Recovery menu,select  --mount the root disk and exit to a shell only

5.       From the Recovery shell, execute the following commands:

Loadfile chroot

Chroot /ROOT /sbin/sh

Vgchange –a y /dev/vg00

Mountall

Lvlnboot –b /dev/vg00/lvol1

…

reboot

   Repairing Damage – Rebuilding Kernel

1.       from the Main Menu,select “Run a Recovery Shell”

2.       Verify the hardware path to your boot disk

3.       From the Recovery menu,select  ….Mount the root disk and exit to a shell only

From the Recovery shell,execute the following commands:

Loadfile chroot

Chroot /ROOT /sbin/sh

Vgchange –a y /dev/vg00

Fsck –P

Mountall

Cd /stand

Mk_kernel

Kmupdate

/sbin/init.d/kmbuild stop

reboot

Repairing Damage—Missing Binary File(s)

1.       From the Main Menu, select “Run a Recovery Shell”

2.       Verify the hardware path to your boot disk

3.       From the Recovery menu, select ….mount the root disk and exit to a shell only

4.       from the Recovery shell,execute the following commands

loadfile XXX       从光盘下载文件到内存中

PA-RISC Boot Disk Structure

Potential Boot Disk Failures