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June | 2010 | Jaydien Network Solutions
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Archive for June 2010 | Monthly archive page

Startup Keys and Boot Options for MAC

Obscure Startup Key / General Use Key Combinations

Apple systems have always used different key combinations to perform different tasks, just like all computer makers. However, finding those key combinations has always been an arduous task – they don’t come right out and tell you in the manual how to do some of these.

This list is a culmination of scouring the net and the list of sites visited is huge, the most simple way to find these combinations is using a Google search, click HERE to perform the same search I did to get started. I visited about 30 web pages and gleaned information from many to assemble this list. :>)

Boot key combinations:

Everybody knows about some of these boot key combinations, but some of the more obscure combinations have been long forgotten (like how many of us have a Quadra AV and use a TV as a monitor!) – Check these out, you may need one of them someday!

  • C : Forces most Macs to boot from the CD-Rom drive instead of the internal hard drive. Only works with Apple ROM drives and with bootable CD discs.
  • D : Forces the first internal hard drive to be the startup disk.
  • N : Netboot (New World ROM machines only) – Looks for BOOTP or TFTP Server on the network to boot from.
  • R : Forces PowerBooks to reset their screen to default size (helpful if you’ve been hooked up to an external montior or projector!)
  • T : Target Disk Mode (FireWire) – Puts machines with built-in FireWire into target Disk mode so a system attached with a FireWire cable will have that device show up as a hard drive on their system. Very useful for PowerBooks!
  • Mouse Button Held Down : Ejects any mounted removable media.
  • Shift : Disables all extensions (Mac OS 7-9), or disables Login items when using Mac OS X 10.1.3 or later. Also works when booting Classic mode up just like you were using the OS natively.
  • Option : When using an Open Firmware “New World ROM” capable system, the System Picker will appear and query all mounted devices for bootable systems, returning a list of drives & what OS they have on them. On “Old World” systems the machine will simply boot into it’s default OS without any Finder windows open.
  • Space bar : Brings up Apple’s Extension Manager (or Casady & Greene’s Conflict Catcher, if installed) up at startup to allow you to modify your extension set.
  • Command-V : Boots Mac OS X into “Verbose Mode”, reporting every console message generated during startup. Really shows what’s going on behind the scenes with your machine on startup!
  • Command-S : Boots Mac OS X into “Single User Mode” – helpful to fix problems with Mac OS X, if necessary.
  • Command-Option : Rebuilds the Desktop (Mac OS 7-9).
  • Command-Option-P-R : Erases PRAM if held down immediately after startup tone. Your machine will chime when it’s erased the PRAM, most people will hold this combination for a total of 3 chimes to really flush the PRAM out.
  • Command-Option-N-V : Erases NVRAM (Non-Volatile RAM). Used with later Power Macintosh systems mostly.
  • Command-Option-O-F : Boots the machine into Open Firmware (New World ROM systems only).
  • Command-Option-Shift-Delete : Forces your Mac to startup from its internal CD-ROM drive or an external hard drive. Very helpful if you have a 3rd party CD-ROM drive that is not an Apple ROM device.
  • Command-Option-Shift-Delete-#(where #= a SCSI DEVICE ID) : Boot from a specific SCSI device, if you have your 3rd party CD-ROM drive set to SCSI ID 3, you would press “3” as the # in the combination.

And, the obscure ones :>) Older computers only, on some.

  • Command-Option-I : Forces the Mac to read the disc as an ISO-9000 formatted disk
  • Command : Boots with Virtual Memory turned off.
  • Command-Option-T-V : Forces Quadra AV machines to use TV as a monitor.
  • Command-Option-X-O : Forces the Mac Classic to boot from ROM.
  • Command-Option-A-V : Forces an AV monitor to be recognized correctly.

Configuring a Cellular Interface on Cisco IOS (CDMA)

Jun 8, 2010

by

In: Cisco Products

 

Activating with Over-the-Air Service Provisioning (Verizon)

Step 3
Router(config-if)# encapsulation ppp

Step 4
Router(config-if)# ppp chap hostname <hostname>

Defines an interface-specific Challenge Handshake Authentication Protocol (CHAP) hostname. This must match the username given by the carrier. Applies to GSM only.

Step 5
Router(config-if)# ppp chap password 0 <password>

Defines an interface-specific CHAP password. This must match the password given by the carrier.

Step 6
Router(config-if)# asynchronous mode interactive

Returns a line from dedicated asynchronous network mode to interactive mode, enabling the slip and ppp commands in privileged EXEC mode.

Step 7
Router(config-if)# ip address negotiated

Spcifies that the IP address for a particular interface is obtained via PPP and IPCP address negotiation.

Note When the cellular interface requires a static IP address, the address may be configured as ip address negotiated. Through IP Control Protocol (IPCP), the network ensures that the correct static IP address is allocated to the device. If a tunnel interface is configured with ip address unnumbered <cellular interface>, the actual static IP address must be configured under the cellular interface, in place of ip address negotiated. For a sample cellular interface configuration, see the ‘Basic Cellular Interface Configuration’ section.

Configuring DDR

To configure dial-on-demand routing (DDR) for the cellular interface, follow these steps.

1. configure terminal
2. interface cellular 0
3. dialer in-band
4. dialer idle-timeout >
5. dialer string <string>
6. dialer group <number>
7. exit
8. dialer-list protocol {permit | deny | list | access-group}>
9. ip access-list > permit >
10. line 3
11. script dialer <regexp>
12. exit
13. chat-script <script name> ” ‘ATDT*99*<profile number>#’ TIMEOUT <timeout value> CONNECT
14. interface cellular 0
15. dialer string <string>

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www.jaydien.com

Specifies PPP encapsulation for an interface configured for dedicated asynchronous mode or dial-on-demand routing (DDR).

To provision and activate your modem using Over-the-Air Service Provisioning (OTASP), use the following command, beginning in EXEC mode: cellular 0 cdma activate otasp phone_number

Configuring a Cellular Interface

To configure the cellular interface, enter the following commands, beginning in privileged EXEC mode.

DETAILED STEPS

Step 1
Router# configure terminal

Enters global configuration mode from the terminal.

Step 2
Router(config)# interface cellular 0

Specifies the cellular interface.

5.1.0 500-‘Firewall Error’ – Cisco Firewall or Cisco UC500

Jun 7, 2010

by

In: Cisco Products

Issue: Repeated Error: #500 Firewall Error ## -or- #5.0.0 smtp; 5.1.0 – Unknown address error 500-’Firewall Error’ (delivery attempts: 0)> #SMTP#

Cause: The Cisco firewall has a configuration entry like the following (it may have additional parameters specified after in addition to esmtp):

ip inspect name esmtp
Read more

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