Hold down the Command-key while the cursor is above a column divider. When the cursor changes drag to resize columns.
Command-Option-click to reset the column to its default position.

You cannot set the start-up drive to the selected device because it is not a disc or it is the current start-up drive (indicated by a gray underline).

Click here to set the start-up drive to the selected ID.

This command is not supported when running A/UX

This item represents your Macintosh which has permanently assigned SCSI-ID 7.

Click here or type “O“ to select the way Mt. Everything’s commands will work.

The button is dimmed because normally only disk-drives have implemented the Start/Stop-Unit command. The selected device is not a disk.
This command is not supported when running A/UX

Click here to start or stop the SCSI-Diskdrive currently selected.
Click the “Options…”-button to select how this command works.

This is the currently selected SCSI-Device. Its ID is displayed on the left side.

 The “Info”, “Start/Stop” and “Mount” commands below will work on this device.

This line is dimmed because Mt. Everyting could not find a device with that ID either because there is none connected or because the device failed to respond.
Try “Update” in the latter case.

Click here to select the SCSI-Device having the ID displayed on the left.
The “Info”-, “Start/Stop”- and “Mount”-commands below will only work on the selected device.

Command-click here to see a list of Mac volumes on the device (if it’s a disk).

Mount volumes from a SCSI-Disk.
The button is disabled because you do not have a disk selected.

Click here or type “M” to mount all Volumes found on the selected disk. 
Option-click to reinstall a fresh copy of the disk driver (either the one loaded from the disk or Mt. Everything’s built-in driver).

Click here or type “U”to rescan the SCSI-Bus and update the displayed information.
Option-click or type “Option-R” to reset the entire bus (e.g. if you have switched a device’s SCSI-ID).

Displays information on the selected SCSI-Disk.
The button is dimmed because the device currently selected is not a disk.

Click here or type “I” to get information on the selected SCSI-Disk.