Customize choices for the element "os" in the computer table

[Shuto Sato]

Hi, I am new to ServiceNow CMDB.
The element field "os" in the cmdb_ci_computer table contains several OOTB choices, including some older operating systems that are almost no longer in use. Also, this attribute field does not include choices for relatively new personal computer operating systems, such as Windows 7 and Windows 10.
I have a few questions here.

1. can we Remove all OOTB choices in the element field "os"?
We are considering removing all OOTB choices and doing Discovery, Service Mapping, or manual additions to keep only the currently utilized OS on the table.

2. is it possible that in a future update, OOTB choices in the element field "os" will be added?
We are concerned about duplication and mixing of choices added through Discovery and Service Mapping with those added through updates.

Any advice is welcome.
Thank you, Sato.

[Mark Manders · Accepted solution]

1. Make them inactive if you don't use them. Chances are they will come back with an upgrade. If in any way possible, never delete, but make inactive. Your discovery can tell you what choices you need active.

2. Yes, this is absolutely possible, but you can simply decide at that moment if you want to inactivate the new OOB choice, or with a simple script move the current records from your custom one to the OOB one and inactivate your custom choice. ServiceNow will continue to develop, innovate and add/remove things, including choices.