Mac OS unable to boot with CD after Ubuntu installed
I had an issue with the MAC OS and couldn't repair the MAC os i have (10.4) on my intel duo core macbook.
So i install Ubuntu 11 on my mac and works perfectly. I am selling my laptop now to get the new macbook pro but the person who wants it needs mac os but every time I try to install it shows a folder with a question mark when I put the mac cd (Original CDs 10.4 that came with the laptop)
so i booted with the "option" and shows my hard drive, put the mac CD and it ejects it, put the ubuntu CD and works perfectly.
I try to clear the nvram: Command + Option + O + F
nothing,
what can i do to install mac os?
Hint
Command-Option-O-F alone, immediately after the startup sound:
- presents an Open Firmware prompt, only on Macs that use Open Firmware
- does not reset NVRAM.
At an Open Firmware prompt you might enter a command such as reset-nvram – but it's not the usual approach.
Advice
Use Command-Option-P-R as instructed in Apple's article: About NVRAM and PRAM.
Additional advice
If the optical disc is loaded whilst the Mac is powered off, then C – pressed immediately after the startup sound, and held – should allow the Mac to boot from a compatible disc.
If the C key approach does not work – and if you have reset NVRAM/PRAM – then consider the possibility of a marginal optical drive and/or marginal disc.
Don't rush to reset the SMC.
Links
Apple's Transition from Open Firmware to Extensible Firmware Interface – MacTech | The journal of Apple technology. (2007)
What is firmware? – not a great article from Apple; it mentions Open Firmware but not EFI under a list of modern products that probably do not use use Open Firmware.
"To continue booting, type 'mac-boot' and press return" Message
Intel-based Macs: Resetting the System Management Controller (SMC)