The Open device [device name] failed (Device not ready) message is displayed when a user attempts to access a Flash device on a Cisco 7200 series router

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Jun 22, 2009 3:40 PM
Jun 22nd, 2009

Core Issue

This error message occurs when incorrect command syntax is used to access a Flash device by issuing the show [device:] command. The command syntax depends on the Flash media type. For example, if the device is an Advanced Technology Attachment (ATA) Flash disk, which should be referred to as disk0: or disk1:, and the command to access a linear Flash card is issued, the message appears as shown:

Router#show slot0:
Open device slot0 failed (Device not ready)

Resolution

If the Open device [device name] failed (Device not ready) message is displayed when attempting to access the Flash device on a Cisco 7200 series router, perform these steps:

  1. Determine what type of Flash device is installed on the router by issuing the show version command. The Flash information appears toward the end of the show version command output, as shown:
    Router#show version
    Cisco Internetwork Operating System Software
    IOS (tm) 7200 Software (C7200-JS-M), Version 12.0(7)T, RELEASE SOFTWARE (fc2)
    Copyright (c) 1986-1999 by Cisco Systems, Inc.
    Compiled Tue 07-Dec-99 16:53 by phanguye
    Image text-base: 0x60008900, data-base: 0x618CC000

    ROM: System Bootstrap, Version 12.1(20000710:044039) [nlaw-121E_npeb 117], DEVELOPMENT SOFTWARE
    BOOTFLASH: 7200 Software (C7200-BOOT-M), Version 12.0(13)S, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)

    Router uptime is 1 hour, 15 minutes
    System returned to ROM by power-on
    System image file is "disk0:c7200-js-mz.120-7.T"

    Cisco 7204VXR (NPE225) processor with 122880K/8192K bytes of memory.
    R527x CPU at 262Mhz, Implementation 40, Rev 10.0, 2048KB L2 Cache
    4 slot VXR midplane, Version 2.1

    Last reset from power-on
    Bridging software.
    X.25 software, Version 3.0.0.
    SuperLAT software (copyright 1990 by Meridian Technology Corp).
    TN3270 Emulation software.
    Primary Rate ISDN software, Version 1.1.
    1 FastEthernet/IEEE 802.3 interface(s)
    1 ATM network interface(s)
    8 Channelized T1/PRI port(s)
    125K bytes of non-volatile configuration memory.

    125440K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).
    4096K bytes of Flash internal SIMM (Sector size 256K).
    Configuration register is 0x102
  2. If the device is shown to be an ATA device, the syntax is show disk0: or show disk1:. This depends on which slot the ATA disk is in. If the device is not an ATA Flash disk, then the syntax is show slot0: or show slot1:. This depends on which slot the Flash card is in. Always include the colon when referring to the Flash devices. In the above example, the command to view the device is show disk0: because the ATA disk is installed in slot 0.

To view files on the device, issue the dir disk0: command. 

If the command syntax is input incorrectly, an error message is displayed.

All of the examples listed are from a router with an ATA disk in slot 0, and no Flash device in slot 1.

  • If the device is referred to as slot0, the output appears as shown:
Router#show slot0:
Open device slot0 failed (Device not ready)
  • If the wrong slot number and device name are used, the output appears as shown:
Router#show slot1:
Open device slot1 failed (No device available)
  • If the device is referred to as Flash, the output appears as shown:
Router#show flash:
Open device slot0 failed (Device not ready)
  • This is a sample output from when the correct syntax is issued:
Router#show disk0:
******** ATA Flash Card Geometry/Format Info ********

ATA CARD GEOMETRY
    Number of Heads:       4
    Number of Cylinders    734
    Sectors per Cylinder   32
    Sector Size            512
    Total Sectors          93952

ATA CARD FORMAT
    Number of FAT Sectors  46
    Sectors Per Cluster    8
    Number of Clusters     11692
    Number of Data Sectors 93792
    Base Root Sector       220
    Base FAT Sector        128
    Base Data Sector       252

Note: The show [device:] command only displays information about the Flash device on a Cisco 7200 series router.

  • Issue the dir [device:] command to view the files on the device, as shown:
Router#dir disk0:
Directory of disk0:/

    1  -rw-     9477892   May 24 2002 10:34:00 ubr7200-ik1s-mz.121-10.EC1.bin
    2  -rw-     2664051   Dec 17 2002 10:13:56 c2950-i6q4l2-mz.121-11.EA1.bin
    3  -rw-    10692148   Feb 26 2003 12:02:46 ubr7200-ik1s-mz.121-13.EC2.bin

47955968 bytes total (25112576 bytes free)
Router#

The syntax for the Flash device is also very important when issuing boot system commands. The syntax that is used should appear similar to this example:

  • For a non-ATA Flash card in slot0, booting to a file named c7200-is-mz.121-8.E1.bin, this is the command:
Router(config)#boot system flash slot0:c7200-is-mz.121-8.E1.bin.
  • For an ATA Flash disk in slot0, booting to a file with the same name, this is the command:
Router(config)#boot system disk0:c7200-is-mz.121-8.E1.bin.

For more information, refer to the Working with a CompactFlash Disk, Flash Disk, or Flash Memory Card section of Flash Memory Card Information.

For more information about memory problems, refer to Troubleshooting Memory Problems.

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