Configuring Primary Compact Flash Recovery

To recover a primary compact flash disk with a corrupt or missing operating system, you must remove the corrupt primary compact disk from the J-series Services Router, plug it into a PC with a PCMIA adapter or USB card reader, copy the JUNOS recovery software package onto it, and reinstall on the router. For instructions about how to remove and install primary compact flash disks, see the Getting Started Guide for your router.

Recovery software packages are available from the same location as J-series upgrade software packages. (See Downloading Software Upgrades from Juniper Networks.)

To recover a primary compact flash disk:

1. Plug the compact flash device into a PCMCIA adapter or USB card reader.
2. Plug the PCMCIA adapter or USB card reader into the host PC and verify that the compact flash is recognized by the operating system.
3. Select the appropriate recovery software package according to the size of your compact flash device. The uncompressed package must have the same size as the target compact flash capacity: 128 MB, 256 MB, 512 MB or 1024 MB. The recovery software package name indicates the size of the package. For information about recovery software package names, see Upgrade and Downgrade Overview.
4. Copy the software package to a temporary directory on the host PC and uncompress it with a compression utility, such as WinZip.
5. Copy the uncompressed software package from the temporary directory to the compact flash device with one of the following commands:

   Caution: You must use the correct target device name. Failure to do so might damage other storage devices connected to the host PC.

   • On a UNIX PC, use the command dd if=filename of=/dev/device_name. Replace filename with the name of the uncompressed image, and device_name with the name of the unformatted PCMCIA card device. For example:
     root# dd if=junos-jseries-7.0–20041028.0–export-cf128 of=/dev/hde

     250368+0 records in250368+0 records out

   • On a Windows 2000 or Windows XP PC, use the Norton Ghost, dd, or physdiskwrite utility. The following example shows the use of physdiskwrite:
     C:\> physdiskwrite —u junos-jseries-7.0–20041028.0–export-cf512

     physdiskwrite v0.5 by Manuel Kasper 
           Searching for physical drives...
           Information for \\.\PhysicalDrive0:
           Windows: cyl: 2432
           tpc: 255
           spt: 63
           C/H/S: 16383/16/63
           Model: HITACHI_DK23DA-20
           Serial number: 123ABC
           Firmware rev.: 00J2A0G0
           Information for \\.\PhysicalDrive1:
           Windows: cyl: 125
           tpc: 255
           spt: 63
           Which disk do you want to write? (0..1) 1
           WARNING: that disk is larger than 800 MB! Make sure you're 
           not accidentally overwriting your primary hard disk!  
           Proceeding on your own risk...
           About to overwrite the contents of disk 1 with new data. 
           Proceed? (y/n) y
           511451136/511451136 bytes written in total

Note: The copy process can take several minutes.

After copying the software package to the compact flash device, you can use it as the primary compact flash disk in any J-series Services Router. For installation instructions, see the Getting Started Guide for your router.