Creating a Disk Image

| Choose "Create New Disk..." open to the File menu select "Create New Disk..." |
| Enter a Name Right below the file listing is a text box where you enter the name of the disk to be created. This is the name the Macintosh file will be given. In this example, we will call the disk "My Huge Disk". |
| Pick a Disk Image Format Bernie lets you create disk image in various formats. The choice of formats is only important when you intend to share disk images with other users or would like to open the disk image in other applications. We recommend the following formats: Use Hard Disk Image if you would like to use the image with Bernie only. User Universal Disk Image if you would like to share this image with users, especially with users of other emulators running under Windows. Use DiskCopy if you would like to mount the disk image on your Mac. This might be useful for moving data from the Mac to Bernie and vice versa. You can open such disk images with Apple's free Disk Copy application. Choose ProDOS Floppy Disk if you have a need for a 5.25" disk. The last two items, DOS 3.3 and ProDOS Floppy, will always generate a 5.25" floppy disk image. All other formats can create disks of virtually any size. |
| Pick a Size Next there is a Size popup menu. You can pick any size for your disk image. You will see default sizes for the most commonly used sizes, but you may also enter an arbitrary size by choosing the last item "Other size". Be sure to pick the right size. Once chosen, you can't make a disk larger if it turns out to be too small. Typical sizes are: GS/OS startup disk: 10Mb Data disk: 5-32Mb (depending on kind of data to be stored) 3.5" disk dummy: 800kB High-density disk: 1440kB |
| Save It Push the Save button to let Bernie create the disk image. Bernie does automatically format the disk in ProDOS format so you can use it immediately. Bernie does also attempt to label your disk image in a reasonable way. It will scan the name you gave the disk image on the Mac side. Since ProDOS file names do have a lot of restrictions as to what characters are allowed, the name will possibly look a bit different. Congratulations, you have just created a ProDOS-formatted disk image. |
| Additional Tips Here're a few additional remarks on disk images: The disk image appears as a regular Macintosh file on your Macintosh hard disk. Only when opened in Bernie, it reveals your Apple II files. If you would like to make a complete backup of the files inside the disk image, you can simply make a backup of the disk image file. If you would like to format your disk image in Macintosh format (HFS), then you need to reformat the disk image in the Apple IIgs Finder. Choose "Erase Disk" from the Special menu and apply the new disk formatting. (Of course, do not erase or reformat your Macintosh hard disk in the MacOS Finder! This is all taking place in Bernie, right?) |