An important lesson in drive addressing here.

Under normal circumstances, when using only floppy disc drives, the drives are numbered 0 and 1, although they may be referred to as 4 and 5 as an alternative.

However, with hard discs connected, the Winchesters become drives 0 and 1 and the floppy drives must then be referred to as 4 & 5. This is different on 32-bit Acorns where the floppy drive is always drive 0 and the hard disc is always drive 4.

Note also the free space map on the hard disc. It is fully compacted which is very wise as the initialiser will partition the disc from the first free sector it finds up until the end of the disc even if there is data already on subsequent sectors! COMPACT BEFORE INITIALISING - you have been warned!

Now I am loading the initialiser from the floppy disc.