Windows NT4.0 HDD no partitions

"Mantas" <[email protected]> Mon, 25 May 2020 16:07:44 +0300

Newsgroups	alt.comp.os.windows-nt4,uk.comp.vintage
Organization	Aioe.org NNTP Server
Message-ID	<[email protected]>

Hi,

I received a Pentium Pro server with Win NT 4.0 installed. It had a password
and 2 IDE hard disks, one was disconnected.
I made a mistake connecting one hard drive to Windows XP machine. I could
see all the files, but something happened and now neither the server nor
Windows XP machines can see the partitions on the disk.

How can I restore it?