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In this way, we do not need to upgrade the entire PICOS system if version changes only appear in one or several of the components. This provides an efficient and effective method of upgrading PICOS system.

NOTE：

Some

devices that are lack of permanent storage media, and the system of which is running in versatile RAM over squashfs layers cannot install additional packages due to the limitation, such as N3000/N3100 series.Some

PICOS component packages would depend on other parts, so the dependent ones should be installed first if they do not exist on the system.

How to use

When new releases of PICOS components have been made available to fix urgent issues, users can get the Debian packages from PICOS support team.

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After finishing upgrade, the switch will reboot automatically, the system will come up running the PICOS operating system with the new PICOS component.

NOTE：

If certain PICOS components have been removed from the running Linux system, this operation would be an installation instead of upgrade. In this case, users need to confirm the model compatibility manually by inputting `Yes` or `Y` at the prompt `Are you sure the model is MODEL (yes/no)?`

Verifying after Upgrade

We can use the following command to check the status of PICOS Debian packages after upgrade.

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PICOS component package uninstall operation is provided as follows.

NOTE：

  • Uninstall the PICOS component packages may cause severe system errors, we strongly recommend not to uninstall any of the PICOS component package.
  • The uninstall operation will uninstall all packages that depend on this package, either directly or indirectly.
Code Block
admin@Xorplus:~$ sudo apt remove picos-utils
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  picos-utils
0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n]