Allied Telesis AlliedWare Plus Operating System Version 5.4.4C (x310-26FT,x310-26FP,x310-50FT,x310-50FP) - Manual (Page 67)

Start-up Sequence
Software Reference for x310 Series Switches
C613-50046-01 REV A AlliedWare Plus TM Operating System - Version 5.4.4C 3.3
Diagnostic Menu
Enter Ctrl+D during start-up to access the bootloader diagnostic menu, and provide
options for performing various hardware tests. This can be useful as a tool for confirming a
suspected hardware problem at the direction of network engineering personnel. When
you enter Ctrl+D, the stage 1 diagnostics menu is displayed:
The options in the stage 1 diagnostics menu allow you to initiate the following tests:
■ RAM
The Bootloader fully tests any/all SDRAM installed in the system.
■ NVS
The Bootloader fully tests any/all non-volatile (battery backed) SRAM installed in the
system.
■ checksum
The Bootloader checksum ROM memory for error detection.
For example, enter “2” to select a Quick RAM test:
Enter “7” to display the stage 2 diagnostics menu:
Bootup Stage 1 Diagnostics Menu:
0. Restart
1. Full RAM test
2. Quick RAM test
3. Battery backed RAM (NVS) test
4. Bootloader ROM checksum test
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7. Bootup stage 2 diagnostics menu
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8. Quit to U-Boot shell
9. Quit and continue booting
Enter selection ==>
Quick RAM test - press Q to quit, S to skip when failing
Writing pattern ................................
Checking pattern ................................
Writing complemented pattern ....................
Checking complemented pattern ...................
Pass 1 total errors 0
Entering stage 2...
Bootup Stage 2 Diagnostics Menu:
0. Restart
2. Test FLASH (Filesystem only)
4. Erase FLASH (Filesystem only)
5. Card slot test
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8. Quit to U-Boot shell
9. Quit and continue booting