Guralp Systems CMG-DCM - Manual (Page 60)

CMG-DCM Data Communications Module
4.6 Flash files
This link opens a page similar to Disk files, but which explores the
DCM's internal Flash memory.
The two directories nand0 and nand1 denote the two regions of Flash
memory used by the DCM to store data. Click on one of them to view
the files.
4.7 Disk tools
The buttons on the Disk tools page allow you to perform some
important actions on the DCM's primary hard disk.
60 Issue F