How to perform an OS Restore

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Equipment Requirements

Intel-compatible PC (desktop or laptop)

  • Must have only one IDE (ATAPI) CD-ROM drive
  • Must be able to boot from a CD-ROM (might require BIOS setting changes)
  • Must have only one of the following Network Interface Cards (NIC)
    • Desktop machines (PCI cards)
      • Intel PRO/100+ Server Adapter (PILA8470B)
      • Linksys EtherFast 10/100 LAN Card (LNE100TX)
      • Netgear Fast Ethernet PCI Adapter (FA312TX)
      • 3Com OfficeConnect Fast Ethernet NIC (3CSOHO100-TX)
      • 3Com Fast EtherLink XL PCI NIC (3C905B-TX)
    • Laptops (PCMCIA cards)
      • Netgear Fast Ethernet PCMCIA Adapter (FA410TX)
      • 3Com Megahertz 10/100 LAN PC Card (3CCFE574BT)
      • Xircom CreditCard Ethernet 10/100 (CE3B-100BTX)

Connectivity Equipment

  • (1) 100Base-T (recommended) or 10Base-T Ethernet hub
  • (2) standard Category 5 Ethernet cables
  • (1) crossover Category 5 Ethernet cable


  • Power off the appliance
  • Boot the restore machine (your PC or laptop) from the OS Restore CD and accept the License Agreement.
    • Booting from a CD may require BIOS adjustments in your PC/laptop
  • If you are using two standard Ethernet cables and a hub:
    • Connect one standard Ethernet cable from the restore machine NIC to the hub.
    • Connect the other standard Ethernet cable from the primary Ethernet port on the appliance (usually marked with a Roman numeral "I") to the hub.
    • Ensure that neither Ethernet cable is connected to an "Uplink" port on the hub.
    • Ensure no other computers are connected to the hub besides the restore machine and the appliance you are restoring.
  • If you are using a crossover Ethernet cable:
    • directly connect the restore machine NIC to the primary Ethernet port on the appliance.

Initiating Restore for x86-compatible appliances

(Qube 3, RaQ 3, RaQ 4, RaQ XTR, CacheRaQ 4, Control Station, RaQ 550)

  • Power up the appliance while holding down the "Select" (S) button. "Select" is the top button of the two to the right of the arrow buttons.
  • Continue holding down "Select" until "Select Option:" appears on the LCD (time for this to appear varies -- on RaQ XTR it might take as much as 1-2 minutes from power-on).
  • Press and release the "Select" button until "Boot From Net" appears on the LCD.
  • Press and release the "Enter" (E) button to begin net booting the server appliance from the OS Restore Disk. "Enter" is the bottom button of the two to the right of the arrow buttons.
  • The LCD shows the "Loading Kernel..." message.
  • For RaQ XTR and Control Station only: "Erase and Rebuild Y N" will appear on the LCD. Move the cursor to the "Y" option with the arrow buttons and press "Enter."

Initiating Restore for MIPS-based appliances

(Qube 2700, Qube 2, RaQ 1, RaQ 2, CacheRaQ 2)

  1. Power up the appliance while holding down both the left and right arrow buttons.
  2. Continue holding buttons down until "NET BOOTING" appears on the LCD.

Monitoring and Shutdown

  1. Various messages will appear on the LCD display as the OS Restore process happens.
  2. Wait until "PLEASE SWITCH OFF POWER NOW" appears on the LCD. The restore process is now complete.
  3. You may safely turn off both the appliance and the restore machine, and return them to normal service.
Warning: During the restore process, the server appliance will
reboot itself at least once. The complete restoration process
will take 15-20 minutes, possibly longer. The entire process
must complete without interruption for a successful restoration
of the server appliance.

Advanced "Useful" Information

  • There is some additional functionality in the OS Restore CD, which may be used to troubleshoot problems with a restoration process, or to at least give you something halfway interesting to watch while the whole process happens. All these options happen on the restore machine (the PC or laptop you booted from the OS Restore CD):
    • Pressing Alt+F1 will return you to the "main" OS Restore screen, where the instructions are.
    • Pressing Alt+F5 will give you a login: prompt and allow you to open a shell session with the Linux installation on the OSRCD. Use the login name of root to connect (no password required). From here, you have access to some basic utilities like top, tcpdump, minicom and ifconfig.
    • Pressing Alt+F8 allows you to watch the NFS connections happening between the restore machine and the appliance.
  • Another way to monitor what's happening, from the appliance side of the process, is to connect a second PC or laptop, via null modem serial cable, to the console serial port on the appliance. You then need to run a terminal emulator (example: HyperTerm on Windows machines), and set the serial connection speed based on the appliance type. Most products use the settings: 115200 bps, N-8-1 parity. The exceptions are MIPS products (Qube 2700, Qube 2, RaQ 1, RaQ 2, CacheRaQ 2) and RaQ 3: the connection speed for these appliances should be 9600 bps, N-8-1 parity.
  • By switching to tty5 (Alt+F5) it's possible to load (via modprobe) additional NIC drivers. There are drivers included for 3c50x, 3c59x, hp, hp100, sis900 and more. (for more info: /lib/modules/2.2.16/net)
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