On an Amiga with more than 2 MB of RAM, you can create a floppy-size RAD:. By copying your Workbench files into this RAD: and reassigning to it all the directories normally assigned to the Workbench disk, it can be used as a recoverable Workbench-in-RAM. This allows you to reboot from RAD: instead of from the Workbench disk.
You can also set up multiple RAD: devices different size by copying the RAD: mount file and changing the name and unit number.
Release 3 of AmigaDOS provides a directory cache option for disk formatting. Disks formatted with this option open their windows and perform most disk operations faster than regular disks. This is especially noticeable on floppy-based systems.
To format a disk with the directory cache option, select the Directory Cache gadget in the Format window. For best performance, also select the Fast File System gadget.
To use directory caching on your system disks, copy the contents of the disk to a disk you have formatted with the Directory Cache option. Do this the way you normally copy files and directories:
This method, rather than a standard disk copy, is necessary to preserve the directory cache Formatting of the destination disk.
The following apply when using directory caching on floppy disks:
Before copying a full system disk to a directory caching floppy, you might need to delete something from the system disk to fit everything on the destination disk.