I think there is duplication in the user accounts somewhere. Retrieved from " https: March 30,

Thus the onus was on the programmer not to create such pointers, or at least manage them very carefully by dereferencing all handles after every such API call. You must have JavaScript enabled in your browser to utilize the functionality of this website. But, many Macintosh application programmers and a great deal of the Macintosh system software code itself accessed the flags directly rather than using the APIs, such as HLock , which had been provided to manipulate them.

Disconnect the power adapter, Ethernet cable, security lock, and any other cords connected to the MacBook Pro to prevent damaging the computer. Remove the access door Shut down your MacBook Pro.