ref: 61ab76ca10766edc8728de5cc6e1d0972c99ebc9
dir: /tests/test.2/notes/
Creates a disk of 40 blocks. Unmarked blocks are blank. Write to a /file1 and update the file using different offsets. Check that the contents match after each addition. # to see the raw contents of block 24 dd -if test.2/disk -bs 512 -skip 24 -count 1 | xd -c block - description 0 - magic dir entry and data 2 - /adm/config dir entry 4 - /adm/super dir entry 6 - /adm/ dir entry 8 - /adm/users/ dir entry 10 - /adm/bkp/ dir entry 12 - /adm/users/inuse dir entry 14 - /adm/frees dir entry 16 - /adm/ctl dir entry -- virtual file, empty contents 18 - /adm/users/staging dir entry 20 - / direntry 22 - /file1 blank dentry as /file1 was deleted but / still holds onto the dentry 34 - /adm/bkp/root.0 dir entry 36 - /adm/bkp/super.0 dir entry 38 - /adm/bkp/config.0 dir entry