Been a while since i ran screen (unRaid v1.6.1?) and preclear_disk.sh (using v1.15).  It used to run fine, clearing the page each time it updated.  Just upgraded a disk on my system and ran preclear from screen.  When I started screen and then preclear, I was presented with the following:

 

http://my.jetscreenshot.com/12412/20160804-hxub-40kb.jpg[/img]

 

And when it runs, it does not clear the screen, but prints the output in continuing rows...

 

Does not matter whether I'm using a windows terminal client (I use MobaXterm) or if I do it at the console on the server.  Same behaviour.  Works fine outside of screen (i.e. page clears and reprints).  But when I load screen, the above displays and each "page" prints without clearing the screen.

 

Thoughts?

 

Not sure why it's doing that.  I briefly thought you'd somehow changed the emulation on Screen; but according to the documentation the only terminal it emulates is a VT100, so it's fine.

 

In the documentation for Pre-Clear, it notes this for vt100 issues:

"... it indicates your telnet client's emulation is not compatible with screen. Try a different emulation type or use Putty, which works well with screen. "

 

So ... you can resolve the issue by changing your Telnet client or settings ... OR you can use the Plugin that's available for v6 systems.    Per the documentation:  "... unRAID v6 has the preclear plugin that allows you to do the preclear from the standard unRAID Web GUI without the need to resort to using the Linux command line. This is the recommended way to do this in v6 systems."