macOS 10.13.1 Espaço de Disco High Sierra iMac

Question

Não consigo determinar o que poderia estar ocupando muito do meu disco de inicialização de 1 TB.

Eu movi a maioria dos aplicativos para outro disco e movi diretórios home e ainda recebo seu disco está quase cheio e agora não posso executar backups timemachine com um erro:

Time Machine could not create a local snapshot to back up from because there was insufficient free space on the source volume(s).

Em um terminal rodando como root executando: root # du -cshm / Volumes / org-disk / * /

8610    /Volumes/org-disk/Applications/
8787    /Volumes/org-disk/Library/
0   /Volumes/org-disk/Network/
7044    /Volumes/org-disk/System/
1   /Volumes/org-disk/User Information/
23  /Volumes/org-disk/Users/
4825673 /Volumes/org-disk/Volumes/
3   /Volumes/org-disk/bin/
0   /Volumes/org-disk/cores/
1   /Volumes/org-disk/dev/
2   /Volumes/org-disk/etc/
1   /Volumes/org-disk/home/
1   /Volumes/org-disk/net/
du: /Volumes/org-disk/private//var/db/ConfigurationProfiles/Store: Operation not permitted
du: /Volumes/org-disk/private//var/folders/zz/zyxvpxvq6csfxvn_n00000y800007k/0/com.apple.nsurlsessiond: Operation not permitted
du: /Volumes/org-disk/private//var/folders/jw/vtq0s2z94kv6jfsh6c1mr9d80000gn/0/SafariFamily: Operation not permitted
du: /Volumes/org-disk/private//var/folders/jw/vtq0s2z94kv6jfsh6c1mr9d80000gn/0/com.apple.LaunchServices.dv: Operation not permitted
du: /Volumes/org-disk/private//var/folders/jw/vtq0s2z94kv6jfsh6c1mr9d80000gn/0/com.apple.nsurlsessiond: Operation not permitted
du: /Volumes/org-disk/private//var/folders/jw/vtq0s2z94kv6jfsh6c1mr9d80000gn/0/com.apple.routined: Operation not permitted
3832    /Volumes/org-disk/private/
2   /Volumes/org-disk/sbin/
4   /Volumes/org-disk/ssud_installation/
3   /Volumes/org-disk/tmp/
1799    /Volumes/org-disk/usr/
du: /Volumes/org-disk/var//db/ConfigurationProfiles/Store: Operation not permitted
du: /Volumes/org-disk/var//folders/zz/zyxvpxvq6csfxvn_n00000y800007k/0/com.apple.nsurlsessiond: Operation not permitted
du: /Volumes/org-disk/var//folders/jw/vtq0s2z94kv6jfsh6c1mr9d80000gn/0/SafariFamily: Operation not permitted
du: /Volumes/org-disk/var//folders/jw/vtq0s2z94kv6jfsh6c1mr9d80000gn/0/com.apple.LaunchServices.dv: Operation not permitted
du: /Volumes/org-disk/var//folders/jw/vtq0s2z94kv6jfsh6c1mr9d80000gn/0/com.apple.nsurlsessiond: Operation not permitted
du: /Volumes/org-disk/var//folders/jw/vtq0s2z94kv6jfsh6c1mr9d80000gn/0/com.apple.routined: Operation not permitted
3828    /Volumes/org-disk/var/
4859601 total

Implica o uso de 4.859.601 MB ou cerca de metade do espaço na unidade.

O Localizador diz que há 1,09 GB disponíveis.

Onde está o espaço ausente?

Como este é um iMAC, substituir a unidade interna não é uma solução simples.

Alguma idéia?