Vector Graphic Vector 4 - Page 194

When purchasing diskettes, be sure to specify "hard-sectored" disks in your
purchase order or with your salesman.
"Soft-sectored" diskettes (which do not
have the sector guide holes) will not work on your machine. For best results,
be sure
to use Vector Graphic Approved diskettes. .
X C-2
7100-0001
9-01-82
- Rev. A