Sun Microsystems Solaris 7 11/99, Руководство по аппаратной платформе

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66 Solaris 7 11/99 Sun Hardware Platform Guide • November 1999
8. Remove your wrist strap and replace the system access cover.
9. Go to “Before Updating the Flash PROM” on page 67.
Sun Enterprise 450 System and the Sun Ultra 450
Workstation: Disabling Write Protection
For the Sun Enterprise 450 system and the Sun Ultra 450 workstation you do not
have to change jumper pins. Instead, you move the keyswitch to allow the flash
PROM to be write-enabled.
When the switch is set to the Locked position (
FIGURE 4-4
), the flash PROM is write-
protected. When the switch is set to the On or Diagnostics position, the flash PROM
is write-enabled.
▼
To Write Enable the Flash PROM on the Sun
Enterprise 450 System and the Sun Ultra 450
Workstation
● Turn the keyswitch to the On or Diagnostics position (
FIGURE 4-4
) before updating
the flash PROM.
Note – Disabling write-protection the Sun Enterprise 450 system or the Ultra 450
workstation assumes that the write-protect/enable jumper was set in the default
position (enabled). If you previously changed the write-protect/enable jumper to be
write protected, perform the steps to make the flash PROM write enabled in
“Location of Flash PROM Jumpers in Sun Enterprise 450 System and the Ultra 450
Workstation” on page 77. You must change the jumper to be write enabled before
continuing with the flash PROM update procedure.