Imaging hangs during boot on Dell Optiplex 740

  • 7007843
  • 08-Feb-2011
  • 30-Apr-2012

Environment

Novell ZENworks 11 Configuration Management Imaging
Novell ZENworks 10 Configuration Management with Support Pack 3 - 10.3 Imaging

Situation

Any update after ZCM 10.3 Dell Optiplex 740  machines hang loading the imaging environment during a  PXE boot or the bootcd.

Resolution

Workaround:
Specify the amount or memory for the PXE kernel boot parameters.
 
PXE boot fix auto imaging:  
In ZCC > Configuration > Preboot Services > PXE Options > Boot Options > PXE Kernel Boot Parameters add the following line.
 
mem=512m
 
The PXE fix listed above does not work for manual imaging through PXE, conf files need to be edited. 
To include manual imaging through PXE:
 
Linux:
Add mem=512 to the z_auto.cfg and z_maint.cfg files found in /srv/tftp .
Windows:
Add mem=512 to the z_auto.cfg and z_maint.cfg files found in C:\Program Files\Novell\ZENworks\share\tftp.
 
Bootcd:
Use a ISO editor to edit isolinux.cfg.  Add: mem=512m to the default linux label append line. 
 

Additional Information

This is a hardware issue.  The bios creates a memory map in which a hole of 64 bytes exists.  Using this mem command ignores the bios memory map and use the size of the mem command. 
 
The workaround specifies 512 MB of memory during the PXE boot.  This workaround can cause problems for PXE aware devices with less than 512 MB of memory. 
 
Updates to ZCM may overwrite the z_auto.cfg and z_maint.cfg.  

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