Clean Install on PC with 2 disks

Hello. I used a Windows 11 Media Creation USB to do a clean install on my PC. I suspected a possible virus on disk 2, but deleted the partitions on both disk 1 and 2. I then installed Windows to the smaller of the two SSDs, disk 1. I then worked my way through the installation screens and went into the Windows desktop environment. I could not find the larger of the two SSDs, disk 2, in Windows Explorer, so I went to Disk Management and did a simple drive creation in disk 2 with a full format.

My question is this: If you have multiple disks, and you are not sure where the virus is exactly, do you delete the partitions of all the disks and reinstall to one of the disks, like I did? Or do you format (in the setup environment menu following booting from the install USB) the second disk (non-Windows install target disk), then delete its partitions? And then delete the partitions on disk 1 and install Windows there?

Edit 1-TLDR: For a virus removal in a PC with 2 SSDs, is the format option needed on disk 2 in the setup environment if disk 1 is the Windows reinstallation target disk? Is the partition deletion needed on disk 2 in the setup environment if disk 1 is the Windows reinstallation target disk?

Thanks.

Disconnect everything except your desired target disk and try again.

The manufacturer of the SSDs or your computer BIOS may have utilities available to securely wipe the SSDs. That's what I would do.

A virus is a program that needs to be "active". To be "active" the the virus file must be executed by an OS.
In other words, normally a virus is located on the main drive and it is auto executed when the computer starts. Even if the virus file is on a data drive, when you reinstall Windows on the main drive, the virus wont be executed by the new OS so there is no need to clean the data drive. After Windows is reinstalled, run a antivirus on the data drive.

My thought: if doing a clean install I unplug any other drives leaving only the desired boot/system/os drive plugged into the main connection, usually marked as 0 or 1 on the motherboard. Get it running, run the full security scan then attach other drive/s and scan if they have data. One problem with having 2 drives connected is parts of the software can be on both and having one fail or being removed can break the whole process.