DropDMG Reviews

Only thing I found that can make an IMG file

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Trying to transfer over files from my old Mac OS 9 computer was a total nightmare—no ethernet port, no USB port, no CD burner. Finally managed it via an old SCSI hookup external zip drive and a USB drive on an intermediate computer. But when I got the files into my virtual OS using SheepShaver, what do I find? The files don't work because Mac OS 9 uses a forked file structure!

DropDMG saves the day!!!! I only used the trial version, but I made an empty, 200MB .dmg file with Disk Utility, converted it to .img with DropDMG, moved it to a USB drive, then to a zip disk, and onto the old Mac. Loaded up the IMG, copied it back to the zip, back to the USB, into the virtual OS and Voila! My files.

Only downside is that for some reason, after it was filled and loaded into the Virtual OS 9, the .img file gave an error and wouldn't load (though the empty one did on the Virtual OS, same as it did on the real old computer.) But once I juggled conversions—I converted the filled .img disk image back to .dmg, and then BACK to .img again—then it loaded fine.

It took me a hell of a time to find a good tool to make a .img file, so I'm posting it here so others can find it more easily.

Pros: Can convert disk images from .dmg to .img and back, whether full or empty, and apparently can juggle a bunch of different formats. Actually, it appears to be able to create a blank disk image also, or create a full one from files or folders. (I didn't know that before.)

Cons: None particularly, although you should know that the .img files can't be loaded with Disk Utility. (They're for OS 9.) Costs $24.

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