The Vol Info button will display a dialog that describes the current volume. You select the current volume with the drive button in the main file selection window; it cycles through all mounted volumes. If you ask for information about the current volume, a window is created that contains the following information:
• Name - The name of the volume
• Total File Count - The total number of files on the volume.
• Total Folder Count - The total number of folders on the volume.
• Total size - The total amount of storage on this volume.
• Space Available - The total amount of available storage on this volume.
• Created - When the volume was last initialized.
• Modified - When the volume was last modified. Changing any file on the volume modifies the volume.
• Backed Up - When the volume was last backed up.
Additionally, if you have selected the Technical Information option (described above), then this window will also display the following information:
• Vol RefNum - This is the reference number that programmers use in File Manager traps.
• Drive Number - This is the number of the disk drive that this volume is stored on.
• Device Driver - This is the refNum of the device driver that controls the volume.
• Block Size - This is the unit of allocation for storage on this volume.
When the Technical Information option is set, this dialog will also display which “volume attributes” apply to the selected volume. In general, a volume will only have some of the possible attributes. The possible attributes are:
• Startup - The volume is the startup volume. When you start your Mac, it will use the System Folder from this volume.
• External - The volume is implemented by an external file system.
• Bootable - The volume could be selected as a Startup volume.
• Access Controls - The volume supports access controls for files and folders.
• Desktop Manager - The volume supports the Desktop Manager. This means programmers can use Desktop traps for this volume.
• BTree Manager - The volume supports the B-Tree Manager.
• Uses File ID’s - The volume supports the file ID’s. This means programmers can use traps that take File ID’s to operate on files on this volume.
• CatSearch - Programmers can use the CatSearch function on this volume.
