We have several Imacs. They were set up when we got them a couple / few years ago so they boot into windows vista.
2 machine have problems now.
1 gets a white screen for about a minute, screen goes black, then an error about no boot drive found.
I read to press and hold option at boot time. When I do that I get that same white screen and just a black cursor (I did that on an OK machine and see how you see a mac hard drive and windws hard drive.
I tried making a bootable linux usb drive but can't get it to boot off it. Pressing option, even on the working machine, doesn't list the usb as a bootable option.
I booted off a vista install CD to do a repair install. It didn't find a windows install.
other machine, boots to white screen then we get a folder in the middle with a question mark.
same boot from windows cd doesn't have it find the hard drive / partition
boot from usb drive doesn't work.
Pressing option gets just the arrow, no hard drives.
2 different situations, but both have hardware failed drive? I'd love to run a hardware hard drive test app. Any sure fire way to make a usb bootable drive and what app would you use?
I used unetbootin to make the thumb drive