Intel SR1520ML Manuel d'utilisateur télécharger pdf (Page 86)

66 Intel

Server System SR1520ML User’s Guide

Using the iBMC Boot Block Write Protect Jumper (J1A4)

The iBMC boot block write protect jumper (J1A4) is protection for the boot block portion

of the iBMC firmware. The default position of the jumper is covering pins 1-2. This

protects the boot block from being written to during an iBMC firmware update. In most

cases there is no need to update the boot block. Most update utilities are not built with the

authority to access this section of code.

In the unlikely event that the boot block must be written to, the J1A4 jumper must be

moved to cover pins 2-3 to enable the update. Once the update is complete and the system

is turned off, always remember to reposition the jumper back to ‘write-protect’ mode,

covering pins pins 1-2.

Note: The boot block is a critical section of the IBMC firmware that contains code to initialize

the iBMC hardware. If this flash area becomes corrupted, then the iBMC may be rendered

useless and inoperable. For this reason jumper protection is applied to this area of the

flash so a user does not mistakenly write to this boot block.

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Intel SR1520ML Manuel d'utilisateur Page 86