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© 1997-2006
Gareth Knight
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Early Startup Screen

Early startup menu

The Early Startup Screen is a series of screens that allow the user to alter various boot options on the system. These range from the type of chipset to be booted from to which drive should be booted. It provides a way of altering the boot-time behaviour of the system. These settings are only used for the current boot and cannot be saved. These options are particularly useful when restricting access to a hard drive if you are concerned that a disk may contain a virus or getting a particularly difficult game to run that does not like the AGA or ECS chipset.

Boot Options

The Boot Options screen reveals a list of floppy drives and hard drive partitions. These are listed in descending priority for the system to access whilst it is booting. To alter these setting select the drive of your choice.

The Control Active Devices column displays the drive status. It is possible to enable or disable these devices by clicking on the status line.

At the bottom of the screen is a gadget box controlling the CPU caches. Selecting this will disable the Data and Instruction caches present in the Motorola 68020, 68030, 68040 and 68060 series. This allows you to retain compatibility with certain software that does not run properly when CPU caches are on. If booting into Workbench with disabled caches you will discover that the system performance will have reduced dramatically.

Display Options

The Display Options displays a choice of the chipset to be booted with. This is only available on Amigas with the Enhanced Chip Set (ECS) or Advanced Graphic Architecture (AGA) chipsets. It is particularly pointless on OCS machines as these are forced to boot with standard OCS chipset. The screen lets you select the display type and chipset that your system uses.

Users with systems containing AGA chipsets should choose the "Best Available" option. This will boot the system using the AGA chip set. Alternatively, to retain compatibility with certain applications it may be necessary to select either the Original ChipSet (OCS) or the Enhanced ChipSet (ECS) for the system to emulate. Amigas with the ECS chipset will only have the option of booting with either the ECS or emulating the OCS chipset.

Expansion Board Diagnostic

Selecting this menu will display the Expansion Board Diagnostic screen. This allows you to view information on the status of the expansion boards in your system. If one of the expansion boards fails, this screen is automatically displayed on boot up. The table is separated into four columns:

Board Number- The number of the expansion board.
Manufacturer- The number of the manufacturer of the board.
Product column- The manufacturer's board product.
Status column- The status of the board: Working or Defective.

This screen does not provide much information but does provide an emergency diagnostic of exactly what went wrong should your system fail. There a number of Workbench-based programs that perform a better job of guessing the type of board that you own.


Last Update: 1/11/2001


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