Anyone know how to boot into an older kernel on a Mac iBook G4?
I know I have 2 kernels installed, but there is no menu to choose boot options from as I only have one OS installed (Ubuntu).
Thank you.
Anyone know how to boot into an older kernel on a Mac iBook G4?
I know I have 2 kernels installed, but there is no menu to choose boot options from as I only have one OS installed (Ubuntu).
Thank you.
You should still be able to get to the menu list at boot. Try hitting escape or shift at boot or just after.
Thanks for your reply. Unfortunately neither esc or shift produced the menu. I tried with each, pressing them intermittently from when I powered on until the log in screen appeared. The only effect was when pressing esc I got a "quiet boot" (no splash).
How old are the kernels? Which release, if you remember?
Depending, boot to Ubuntu, open a terminal and:
Find these lines and make them look like this:Code:sudo nano /etc/default/grub
Reboot. Anything?Code:GRUB_DEFAULT=0 GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=10
Kernel versions 3.11.0-3 and 3.11.0-4 for powerpc.
There is no /etc/default/grub file.
I guess I should install grub, right? How?
Thanks.
Hello,
Maybe you have a old version of grub.
Try to edit file menu.lst :
sudo gedit /boot/grub/menu.lst
If it is ok you modifie :
By :## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout X
## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
hiddenmenu
You save and do a :## timeout sec
# Set a timeout, in SEC seconds, before automatically booting the default entry
# (normally the first entry defined).
timeout 10
## hiddenmenu
# Hides the menu by default (press ESC to see the menu)
## hiddenmenu
sudo update-grub
Bye
With a kernel that recent don't think old grub, but definitely worth a try, just in case.
Do you also have a Mac OS on this machine? That could be using Boot Camp to boot and not grub, but you should still be able to find the /grub config file in Ubuntu in one of the two places given so far.
Hmm...
No /boot/grub directory either...
No Mac OS or any other OS installed, only Ubuntu.
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