I have a file named "In␀remental Backup 010905". It's an old Windows backup file that got transferred to my Mac ages ago. I cannot get rid of it. Cannot move to Trash, and I've already tried Trash It. Cannot change file name. Any suggestions?

Trash – Can’t Empty or Move File To Trash

Unfortunately there is no way to delete that file without erasing the volume it's on and restoring everything else from a backup. The file name is corrupt.

The same issue was reported earlier.

Cannot delete/rename/move a file from Windows with a special character

The files with the special null character in its file name can be deleted by booting in Yosemite ( 10.10.x ) or earlier.

There was a way to delete these files with every version of the operating system till El Capitan. I have 3.5 TB of data and three of these files have "infected both the boot drive and my 4 TB raid and 6TB backup. Since the machine I running is a new "Skylake" iMac there is no other choice than to spend HOURS reformatting and restoring in order to delete 3 tiny little files that could have been deleted in seconds with any previous version of the operating system.

I read, but don't remember, what apple changed, and since this is the second time my computer has been infected I am seriously considering selling my new iMac and updating an older MacPro so I can revert back to a less crippled operating system.

First they replaced useful labels with dots and now I can't delete files from my backup that have nul characters. STOP TURNING MY COMPUTER INTO AN IPAD.

Apparently a better answer might be to wait for apple to fix this bug.

Here is a link that purports to have spoken to apple:

http://superuser.com/a/1032763/594914

It appears that this problem has been reported and is being worked on as we speak.