install/53898: Permit sysinst to permit operations on a live system such as install additional sets

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>Number:         53898
>Category:       install
>Synopsis:       Permit sysinst to permit operations on a live system such as install additional sets
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    install-manager
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Mon Jan 21 19:10:00 +0000 2019
>Originator:     Sevan Janiyan
>Release:        NetBSD-HEAD
>Organization:
>Environment:
>Description:
If I skip a file set during the initial install process and decide to go back and install after the system has booted, it is not possible to do using sysinst.
Choosing the "Re-install sets or install additional sets" menu option reports "I can not find any hard disks for use by NetBSD.  You will be returned to the original menu."

>How-To-Repeat:

>Fix: