Réinitialiser le mot de passe sur un APU

[jmanson]

Bonjour à tous !

Notre entreprise viens de reprendre un petit établissement avec une petite installation réseau ... bien entendu absolument aucune documentation technique n'existe pas même un petit mot de passe de quoi que ce soit !

J'ai donc, entre autre, ce petit apu qui tourne sous pfsense (si on en crois l'étiquette qui est apposé dessus)

J'aimerai bien pouvoir reprendre la main sur ce pare-feu sans le réinstaller, j'ai donc chercher les procédures de réinitialisation de mot de passe mais des le début je suis bloqué j'ai beau appuyé sur "S" la machine ne redémarre pas en mode single user d'ailleurs la séquence de boot me donne l'impression que je n'ai pas vraiment accès au pfsense via le port serie :

SeaBIOS (version ?-20160307_153453-michael-desktop64)
XHCI init on dev 00:10.0: regs @ 0xfeb22000, 4 ports, 32 slots, 32 byte contexts
XHCI    extcap 0x1 @ feb22500
XHCI    protocol USB  3.00, 2 ports (offset 1), def 0
XHCI    protocol USB  2.00, 2 ports (offset 3), def 10
XHCI    extcap 0xa @ feb22540
Found 2 serial ports
ATA controller 1 at 4010/4020/0 (irq 0 dev 88)
EHCI init on dev 00:13.0 (regs=0xfeb25420)
ATA controller 2 at 4018/4024/0 (irq 0 dev 88)
Searching bootorder for: /pci@i0cf8/*@14,7
Searching bootorder for: /rom@img/memtest
Searching bootorder for: /rom@img/setup
ata0-0: CHN mSATA01M 060 ATA-9 Hard-Disk (57241 MiBytes)
Searching bootorder for: /pci@i0cf8/*@11/drive@0/disk@0
XHCI no devices found
Initialized USB HUB (0 ports used)
All threads complete.
Scan for option roms
PCengines Press F10 key now for boot menu:
Searching bootorder for: HALT
drive 0x000f2e90: PCHS=16383/16/63 translation=lba LCHS=1024/255/63 s=117231408
Space available for UMB: c1000-ef000, f0000-f2e90
Returned 262144 bytes of ZoneHigh
e820 map has 7 items:
  0: 0000000000000000 - 000000000009f800 = 1 RAM
  1: 000000000009f800 - 00000000000a0000 = 2 RESERVED
  2: 00000000000f0000 - 0000000000100000 = 2 RESERVED
  3: 0000000000100000 - 00000000dffae000 = 1 RAM
  4: 00000000dffae000 - 00000000e0000000 = 2 RESERVED
  5: 00000000f8000000 - 00000000fc000000 = 2 RESERVED
  6: 0000000100000000 - 000000011f000000 = 1 RAM
enter handle_19:
  NULL
Booting from Hard Disk...
Booting from 0000:7c00

SYSLINUX 3.86  EBIOS Copyright (C) 1994-2010 H. Peter Anvin et al
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<6>Loading /xhci_xhc.v00
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<6>Loading /imgdb.tgz
<6>Loading /state.tgz
<6>Relocating modules and starting up the kernel...

apres cela, je n'ai plus rien qui bouge sur mon terminal.

Est-ce qu'il y a quelque chose a faire ?
Je précise que l'installation est fait sur un disque MSATA.