To disable ID 8 - Change the 8 in open 1,8,15 to an other device ID to make the effect on this drive.
10 rem disable ID8 drive
20 open1,8,15,"m-w"+chr$(119)+chr$(0)+chr$(2)+chr$(0)+chr$(0):close1
Change ID 8 to ID 9
10 REM Change drive ID from 8 to 9
20 open1,8,15,"u0>"+chr$(9):close1
Change ID 9 to ID 8
10 REM Change drive ID from 9 to 8
20 open1,9,15,"u0>"+chr$(8):close1
To change other device numbers change the underlined-bold numbers accordingly
20 open1,9,15,"u0>"+chr$(8):close1