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What is efifb?
This is a generic EFI platform driver for Intel based Apple computers.
efifb is only for EFI booted Intel Macs.
Supported Hardware
- iMac 17"/20"
- Macbook
- Macbook Pro 15"/17"
- MacMini
How to use it?
efifb does not have any kind of autodetection of your machine.
You have to add the following kernel parameters in your elilo.conf::
Macbook :
MacMini :
Macbook Pro 15", iMac 17" :
Macbook Pro 17", iMac 20" :
Accepted options:
======= ===========================================================
nowc Don't map the framebuffer write combined. This can be used
to workaround side-effects and slowdowns on other CPU cores
when large amounts of console data are written.
======= ===========================================================
Edgar Hucek <>