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Article ID: 12569
Last update: 04-09-08
Issue:
Attempting to install Red Hat Enterprise Linux 5 on a Megaraid-based system fails, as the system cannot detect the Megaraid driver. How do I work around this?
Resolution:

If the BIOS settings for the adapter is incorrectly set to "I2O" emulation, the system will attempt to load the i2o driver. This will fail, and prevent the proper driver from being loaded. To prevent an installation failure on a Megaraid-based system, the correct emulation mode must be used.

Host bus adapters that use the MegaRAID driver must be set to operate in "Mass Storage" emulation mode, not in "I2O" emulation mode. To do this, perform the following steps:

  1. Enter the MegaRAID BIOS Set Up Utility.

  2. Enter the Adapter settings menu.

  3. Under Other Adapter Options, select Emulation and set it to Mass Storage.

Previous Red Hat Enterprise Linux releases generally do not attempt to load the I2O driver before the MegaRAID driver. Regardless of this, the hardware should always be set to "Mass Storage" emulation mode when used with Linux.


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