HardDriveIndicator 
If your hard drive LED light is broken or hidden, HardDriveIndicator is the ideal solution. HardDriveIndicator displays a system tray load indicator for your local physical disks, with a 5 bar resolution for both the read and write operation of the hard disk.
Displays a system tray load indicator for your local physical disks.
Has a 5 bar resolution for both read and write operations.
Has a small memory footprint and low CPU utilisation.
Auto-calibrates itself to ensure that the output is relative to the disk usage for the previous 60 seconds (Read and write scales are not relative).
Shows a 'governor' to indicate whether the system tray icon is actually being updated.
Requires: Win XP/2K/2003
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