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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 rootvg.

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 3).
    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 1).

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
PVNAME    BOOT        DEVICE PVID                                              
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
14. This has also been caused by a firmware defect in the past, check if your firmware contains this defect:

3R070425        IMPACT:   Serviceability     SEVERITY:   Special Attention
    A problem was fixed that caused a failure with error code 20EE000B when
    upgrading to later AIX versions with large boot images.

Historical Number


Document information

More support for: AIX family

Software version: 4.3, 5.1, 5.2, 5.3

Operating system(s): AIX

Reference #: T1000330

Modified date: 04 April 2005

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