Move Oracle to new drive
You have my sympathies.
This sounds like [yet another] amateur-hour set-up where the &quot;Administrators&quot; think they can treat an Oracle database server just like they do a file server full of Word documents.
The fact that their attempted &quot;Recovery&quot; was done at the disk level instead of reaching for their database backups tells me they that have very little idea what they're doing.
Ask them directly about their &quot;database backups&quot; and see how blankly they look at you.   Based on that, consider your &quot;escape&quot; options.
Moving forward:

Backup the database.  The Data matter, not which server they host it on.
Build a clean Windows server,
install Oracle database,
port the data across,
test everything!


their concern is about reinstalling Oracle ... took over the company ... don't know the license details.

&quot;Danger, Will Robinson!&quot;
Start pointing them, strenuously, in the direction of an Oracle Account Representative.
Running Oracle database without a support contract is bordering on sheer insanity.