PC Exchange 2.2: 1GB or Large Volume Support

The Read Me file from Mac OS 8.1 states that PC Exchange 2.2 can support volumes larger than 1 GB. I am trying to mount a 1.5 GB removable cartridge and get an error message.

The error message received is "PC Exchange cannot mount this volume because it's allocation block size is greater than or equal to 32k." Further testing by both users confirms that it still mounts fine if formatted to a 1 GB volume.

What is wrong?
PC Exchange 2.2 does support volumes larger than 1 GB but they must be formatted as FAT32 volumes. FAT32 is a new volume format available with Windows 95 OSR2. This format allows for smaller allocation blocks on larger volumes sort of the same way HFS Extended does for the Macintosh.

The previous volume format is FAT16 and volumes up to 1 GB are supported by PC Exchange.
Published Date: Feb 18, 2012