Can't Reboot Back To The Mac OS

Running a mid 2007 iMac, recently upgraded to Mavericks. I also have a Win7 Bootcamp partition.

I can boot into Win7 no problem but when I try to use the Win7 Bootcamp utility in the system tray to reboot to the Mac OS, I get an error telling me it can't find a bootable Mac OS X drive.

Both partitions are on the same drive. It all worked fine until my upgrade to Mavericks.

I CAN get back to "the Mac side" via the Option key at reboot, it's just not as elegant as using the Win7 Bootcamp utility.

Any suggestions?

When you get back to Mavericks via Option, go into System Preferences > Startup Disk and ensure the OS X.9 partition is selected in blue.

harryb2448 said:

When you get back to Mavericks via Option, go into System Preferences > Startup Disk and ensure the OS X.9 partition is selected in blue.

Click to expand...

Yeah, but why did the Bootcamp utility stop working? Why can't it "find" my Mac drive?

Give re-installing the BC software in Windows a go. It looks like the upgrade affects a few people negatively so it's worth starting with something simple and hoping that your issue is one of the easier ones.