Check

Diagnostic LED decoder

Description

point

G=Green, R=Red, O=Orange

 

 

 

 

 

 

 

EF

O

O

O

G

Read error occurred on media. Jump back to checkpoint EB.

 

 

 

 

 

 

F0

R

R

R

R

Search for pre-defined recovery file name in root directory.

 

 

 

 

 

 

F1

R

R

R

O

Recovery file not found.

 

 

 

 

 

 

F2

R

R

O

R

Start reading FAT table and analyze FAT to find the clusters

 

 

 

 

 

occupied by the recovery file.

 

 

 

 

 

 

F3

R

R

O

O

Start reading the recovery file cluster by cluster.

 

 

 

 

 

 

F5

R

O

R

O

Disable L1 cache.

 

 

 

 

 

 

FA

O

R

O

R

Check the validity of the recovery file configuration to the current

 

 

 

 

 

configuration of the flash part.

 

 

 

 

 

 

FB

O

R

O

O

Make flash write-enabled through chipset and OEM-specific

 

 

 

 

 

method. Detect correct flash part. Verify that the found flash part

 

 

 

 

 

size equals the recovery file size.

 

 

 

 

 

 

F4

R

O

R

R

The recovery file size does not equal the found flash part size.

 

 

 

 

 

 

FC

O

O

R

R

Erase the flash part.

 

 

 

 

 

 

FD

O

O

R

O

Program the flash part.

 

 

 

 

 

 

FF

O

O

O

O

The flash has been updated successfully. Make flash

 

 

 

 

 

write-disabled. Disable ATAPI hardware. Restore CPUID value

 

 

 

 

 

back into register. Give control to F000 ROM at F000:FFF0h.

 

 

 

 

 

 

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