Apple designed iMac with a very sharp, 15-inch internal display and no video-out port to connect a second display. The db-15 port on the iMac was not designed to support an external monitor. Restart the iMac by pressing the power button on either the keyboard or the front of the computer.Įxternal Displays Not SupportedConnecting an external display to the iMac is not supported by Apple. Wait at least 30 seconds and then reconnect the power cord. The reset button hole is the top hole located between the Ethernet and modem ports and marked with a triangle symbol.) If the reset button method doesnt work, try the following: 1. (Open the I/O door on the side of the iMac. (See HFS Plus Formatted Drives in the Troubleshooting chapter.)įorcing a RestartIf holding down the Command, Control, and Power keys fails to restart the iMac computer after a system hang, you can force a restart in one of two ways: First, try inserting a straightened paper clip in the reset button hole. Norton Utilities version 3.5 is not compatible with HFS Plus and version 3.5.1 and earlier can result in hard drive corruption and loss of all data on the hard drive.
UPGRADE MEMORY IN IMAC MAC OS
HFS Plus Formatted DrivesThe iMac hard drive is formatted from the factory with Mac OS Extended format, also referred to as HFS Plus. (See Error Beeps in the Troubleshooting chapter.) (See SGRAM Video Memory in the Basics chapter.)Įrror BeepsIf problems are detected upon startup, the iMac system will sound one or more error beeps.
UPGRADE MEMORY IN IMAC INSTALL
Never install the 256K or 512K video memory DIMMs used in older Macintosh computers.
Use only SGRAM SO-DIMMs in these machines. SGRAM Video MemoryThe iMac computers use SGRAM video memory. (See Power-On Self Test in Troubleshooting for more information.) If incompatible memory types are installed, you will hear two beeps upon startup. (See SDRAM DIMMs in the Basics chapter and refer to the iMac section of the Memory Guide.)Note: Customers are allowed to upgrade the memory in iMac computers and may inadvertently mix EDO and SDRAM memory. System problems will result if EDO memory is installed. Mixed Memory TypesThe iMac computer uses SDRAM SO-DIMMs only EDO memory will not work in the iMac computer. You should also refer to the Troubleshooting chapter for basic theory of operations information. To familiarize yourself with a new product family, always read the Basics chapter in its entirety.
UPGRADE MEMORY IN IMAC MANUAL
This chapter is not intended to replace other parts of this manual it merely provides a pointer to pertinent information in those chapters. This chapter alerts you to important issues and provides pointers to other areas in the manual where more complete information can be found. IntroductionThis chapter is designed to highlight unique or highpriority product issues that you should be aware of before servicing the iMac computer.