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  • 1.  SRX650 - booting from 4GB external compactflash

    Posted 09-21-2023 10:32

    Hey folks,

    Running JUNOS 11.4R12, I'm attempting to use a 4GB CompactFlash card in an SRX650, while I recognise the documentation indicates a 2GB should be used, they are proving hard to source locally where I am. 

    Following along the document here Backing Up an Installation Using Snapshots (Junos OS) | Junos OS | Juniper Networks for the SRX650 and booting off USB, enabling external CF in u-boot, the SRX seems to identify there is a CF there but thinks there is no space on it:


    Routing Engine   REV 18   750-xxxx   yyyyy          RE-SRXSME-SRE6
      ad1       0 MB                      

    > request system snapshot media external partition      
    error: external (/dev/ad1) is too small. Size must be atleast 1GB

    Have tried a few variations on formatting the 4GB CF, formatted with 4 & 2GB (FAT) partitions using windows diskpart.

    Has anyone had success in a similar scenario, or have any suggestions on other things to try here?

    Thanks in advance.



  • 2.  RE: SRX650 - booting from 4GB external compactflash

    Posted 09-22-2023 19:55

    There are some old srx650 specific format instructions that use a boot to USB then snapshot method outlined here.

    https://www.juniper.net/documentation/en_US/junos/topics/task/installation/junos-software-existing-installation-backing-up.html#id-configuring-external-compactflash-for-srx650-devices



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    Steve Puluka BSEET - Juniper Ambassador
    IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP - Retired)
    http://puluka.com/home
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  • 3.  RE: SRX650 - booting from 4GB external compactflash

    Posted 09-24-2023 19:06

    Thanks, but I've tried that with no luck (same as in the more recent instructions I linked).