Forbidden sign on restart
After pushing an image to macbook, it shows forbidden sign. How can I fix it?
Mac OS X (10.6)
After pushing an image to macbook, it shows forbidden sign. How can I fix it?
Mac OS X (10.6)
that can be serious, perhaps a dead or dying disk.
Do a SMC reset while it is shut off, then try again.
How to reset the System Management Controller (SMC) on your Mac - Apple Support
It will probably not startup, but if it does, make backups immediately !
Then run the etrecheck app, it will produce a diagnosis list,
post the list here.
etrecheck.com
Assuming no sudden hardware problems, it means your image isn't recognised as a valid startup volume.
Forbidden sign on restart