TUXERA NTFS could not mount/ dev/disk0s4 at/ volume/BootCam because the following problem occurredĭid not receive a signal within 15.000000 seconds I need some help for my IMac 21.5 inc ,Mild 2011 And it's giving me unexpected problems I don't know what's went wrong in my Mac now it can not read any dvd and hard drive normally but sometimes it is ok everything itself but i can't rely on it as before it's keeping acting up and i try to to install window from boot cam but it gave me this error Hi everyone i'm new to this forum and about this operating system.