I'd run it again as chkdsk /f which will repair any file structure anomalies but it will also report if it has found any KBs in bad sectors.
A read only mode would also report this but you haven't included that part in your thread.
To view the chkdsk log, open Event Viewer and ensure Event Viewer (Local) is highlighted in the left pane - if it isn't then just click on it.
When it has read the data, expand Windows Logs - Application/Action/Find and type chkdsk or wininit into the Find box and press enter.
Cancel the Find box and read the report in the scrollable window below.
If it reports any bad sectors then create a system image immediately onto external media and then perform a chkdsk /r
Depending upon where it finds bad sectors, this can sometimes result in lost data as it moves data from the bad sectors.
A program I use occasionally is the trial version of HDSentinel which will give a written report.
https://www.hdsentinel.com/I have this saved in my Downloads folder to use as and when, having uninstalled after use to stop the clock on it.