To recover an internal compact flash with a corrupt or missing operating system, you must remove the corrupt internal compact 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.
Recovery software packages are available from the same location as J-series upgrade software packages. (See the JUNOS Software Administration Guide.)
To recover an internal compact flash:
Caution: You must use the correct target device name. Failure to do so might damage other storage devices connected to the host PC.
root# dd if=junos-jseries-7.0–20041028.0–export-cf128 of=/dev/hde
250368+0 records in250368+0 records out
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, you can use it as the internal compact flash in any J-series Services Router.