Machine boots directly into Mac OS X with no yaboot boot menu

[steve s]

Hey,

I cant start yellowdog linux on my machine anymore, I have no choice and the 
yaboot menu that usually comes up when I start my machine doesn't even 
appear. It was working fine last night.

I think what triggered this is the fact that this morning I decided to 
update Mac OS X from 10.3.8 to 10.3.9 and downloaded the update file from 
apple. When the download was complete I tried to run the update and got an 
error -39. I tried again to update with no success and just deleted the 
update file. After that I tried to reboot and noticed that the yaboot menu 
didnt appear and Mac OS X loaded straightaway. I shutdown and started the 
machine and it happened again every time I tried. I need to get to yellowdog 
linux because my portfolio and other files are saved there.

Here are the details of my machine.

powermac g4 500mhz AGP (I think)

896 Mb RAM

disk0 yellowdog linux

disk1 Mac OS X

Thanks in advance.

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