Sun Microsystems Enterprise 250 Owner's Manual page 128

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the keyswitch located on the front panel to write protect the ﬂash PROM. When the

switch is set to the Locked position, the ﬂash PROM is write-protected. When the

switch is set to the Power-on position or to the Diagnostics position, the ﬂash PROM

is write-enabled. For descriptions of the various keyswitch settings, see "About the

Status and Control Panel" on page 6.

Sun Enterprise 250 Server Owner's Guide ♦ Revision A, June 1998

Pins 1 + 2 Selects

Write Protect

High Half Booting

Jumper J2704 is factory-set so that the ﬂash PROM is write-enabled. You use

Pins 2 + 3 Selects

Not To Be Used

Write Enable

Normal Booting

Troubleshooting