admin
c789a00b2d
Fix cross-drive backup failing for system-drive destinations. The /mnt/hdd_placeholder folder is on the internal SSD, so IsMountPoint() returned false and the old code hard-blocked it. - ValidateDestination() (crossdrive.go): onSystemDrive flag replaces boolean-only check; system drives require ≥10 GB free and <90% usage to protect OS stability; external drives just need ≥100 MB free. - CheckBackupDestination() (mounts_linux.go): Tier 4 now branches on h.SystemDrive; system drive blocks at <10 GB free or ≥90% usage (matches runner enforcement); external drive unchanged (warn 90%, block 95%). Removes the && h.Severity == "ok" guard that was preventing system-drive critical messages from overriding warnings. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>