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Juniper EX4600-40F can not boot OS

‎12-05-2019 05:25 PM

Hi all,

We have the problem that SW EX4600-40F could not boot the operating system and we did not remember the root password for maintenance

Pls help me fixed it. Thank you.

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Re: Juniper EX4600-40F can not boot OS

‎12-05-2019 06:33 PM

in this case , fastest way will be reinstall junos with formatting fs, you will lose all configuration files on this switch(hope you have backup)

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Re: Juniper EX4600-40F can not boot OS

‎12-05-2019 08:54 PM

thank for support, I will try this way

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Re: Juniper EX4600-40F can not boot OS

‎12-16-2019 11:37 AM

Hi viet.nb,

 

Here is the procedure to perform the format install via USB, 

 

USB:

  1. To perform this recovery installation, the USB Drive should be formatted to FAT-32 & should be empty.

  2. Copy the Junos package to USB flash drive.

  3. Power off the EX switch

  4. Put the USB flash drive in the EX switch.

  5. Power on the EX switch.

  6. After the 'Loading getting /boot/default/loader.conf' displays, hit space bar for the loader> prompt.

  7. Issue the install command with the format option:

    loader> install --format file:///<Junos package name>

    For example:

    loader> install --format file:///jinstall-ex-4200-10.4R2.6-domestic-signed.tgz


Note: Both the installation methods proceed as normal and ends with a login prompt. The username should be root & no password prompt since the file system been formatted.

 

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//Nex

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Re: Juniper EX4600-40F can not boot OS

‎12-16-2019 01:19 PM

Nexon,

 

actually this procedure works for legacy EX platforms, like EX4200, only. Here is a KB article how to recover an EX4600 device:

 

https://kb.juniper.net/InfoCenter/index?page=content&id=KB34866

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