J'ai corrigé, rebooté le NAS et vérifié, les entrées sont bien là, mais l'installation de rclone échoue encore 
~]$ head /etc/config/def_share.info
[SHARE_DEF]
defPublic = Public
defDownload = Download
defMultimedia = Multimedia
defRecordings = Recordings
defUsb = Usb
defWeb = Web
defVolMP = /share/ZFS1_DATA
~]$ head /mnt/HDA_ROOT/.config/def_share.info
[SHARE_DEF]
defPublic = Public
defDownload = Download
defMultimedia = Multimedia
defRecordings = Recordings
defUsb = Usb
defWeb = Web
defVolMP = /share/ZFS1_DATA
Erreur 2026-07-10 20:35:26 --- 192.168.1.17 Web Desktop Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100 App Center Installing/Updating/Removing Apps [App Center] Failed to install RClone. The system volume is missing.