I just installed Ubuntu. I created a partition in MacOSx using Disk utility, then deleted the partition and installed Ubuntu on the free space created. After the installation, Ubuntu said it would reboot. I hang on shutdown (which is normal, as google told me), so I used the power button to turn the MacBook off.
Now I want to boot into Ubuntu. Pressing option/alt on startup only shows me the MacOSx and Windows partition.
Also, the Linux partition isn't showing up on my MacOSx desktop. And in Disk Utility, I can see 3 grayed out partitions: "disk0s4", "disk0s5" and "Linux Swap".
What can I do to boot into Ubuntu without losing my other partitions? Thank you for your help.