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Friday, February 20, 2009

Recovering from LED 20ee000b

Technote (FAQ)
Recovering from LED 20ee000b


Recovering from LED 20ee000b

LED 20ee00b may indicate a problem with a corrupted bootimage, bootlist,
or NVRAM. It may also be due to a hardware problem with the boot disk in

This document applies to AIX V4 and V5.

Recovery procedure

1. Boot your system into a limited function maintenance shell (Service,
or Maintenance mode) from AIX bootable media to perform file system checks
on your root file systems.

Please refer to your system user's or installation and service guide
for specific IPL procedures related to your type and model of hardware. You
can also refer to the document titled
Booting in Service Mode

2. With bootable media of the same version and level as the system, boot the
system. The bootable media can be any ONE of the following:

  • Bootable CD-ROM
  • Bootable Install Tape

Follow the screen prompts to the following menu:

   Welcome to Base Operating System
Installation and Maintenance

3. Choose Start Maintenance Mode for System Recovery (Option

The next screen displays the Maintenance menu

4. Choose Access a Root Volume Group (Option 1).

The next screen displays a warning that indicates you will not be
able to return to the Base OS menu without rebooting.

5. Choose 0 continue.

The next screen displays information about all volume groups on
the system.

6. Select the root volume group by number.

7. Choose Access this volume group and start a shell (Option

If you get errors from the preceding option, do not continue with
the rest of this procedure. Correct the problem causing the error. If
you need assistance correcting the problem causing the error, contact one
of the following:

  • Local branch office
  • Your point of sale
  • Your AIX support center

If no errors occur, proceed with the following steps.

8. Determine which disk(s) is the boot disk with the lslv command.
The boot disk(s) will be shown in the PV1 column of the
lslv output. Enter:
   lslv -m hd5

9. Use the bosboot command to recreate the boot image. (# is the
number of the fixed disk, determined on the previous command.)

bosboot -ad /dev/hdisk#

10. Use the bootlist command to view and rebuild the boot list.

bootlist -m normal -o (shows what devices are
currently in the bootlist)

bootlist -m normal [hdisk#]

11. Verify that the disk drive is now showing up as bootable.

ipl_varyon -i

hdisk0 YES 00097c7f9b622e7e0000000000000000
hdisk1 YES 00097c7f11889de80000000000000000

(This would mean both hdisk0 and hdisk1 are bootable disk drives.)

12. With the key in Normal position (if it is a microchannel machine), shut
down and reboot.

13. If running the bootlist command did not fix the problem and
you need further assistance, contact one of the following:

  • Local branch office
  • Your point of sale
  • Your AIX support center

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