Synk automatically excludes a number of items that aren’t necessary. This helps performance, and in some cases is necessary for bootable backups or other special circumstances.
Any item with one of the following names is excluded:
- .TemporaryItems
- .Trash
- .Trashes
- Network Trash Folder
- Desktop DB
- Desktop DF
- .HFS+ Private Directory Data\r
- .FBCIndex
- .FBCLockFolder
- .Spotlight-V100
- .fseventsd
- .DocumentRevisions-V100
- Backups.backupdb
- .MobileBackups
- MobileBackups.trash
- .MobileBackups.trash
Items with one of the following paths relative to a volume root are excluded:
- .com.apple.timemachine.supported
- .hotfiles.btree
- .journal
- .journal_info_block
- .quota.ops.user
- .quota.user
- .VolumeIcon.icns
- Cleanup At Startup
- File Transfer Folder
- Library/Updates
- mach
- mach.sym
- net
- Previous Systems
- private/var/db/efw_cache
- private/var/db/Spotlight
- private/var/db/Spotlight-V100
- private/var/lib/postfix/greylist.db
- System/Library/CoreServices/.disk_label
- System/Library/CoreServices/.disk_label.contentDetails
- System/Library/Extensions/Caches
- TheVolumeSettingsFolder
- Trash
- Users/Guest
- Users/Shared/SC Info
Everything inside directories with one of the following paths relative to a volume root is excluded:
- automount
- private/var/automount
- cores
- dev
- home
- Network
- private/Network
- private/tftpboot
- private/tmp
- private/var/tmp
- private/var/automount
- private/var/db/dhcpclient
- private/var/db/fseventsd
- private/var/folders
- private/var/log
- private/var/run
- private/var/vm
- System/Library/Extensions/Caches
- Volumes
- .vol
Any files only inside directories with one of the following paths relative to a volume root are excluded:
- private/var/spool/cups
- private/var/spool/fax
- private/var/spool/uucp
Any items whose subpath ends with one of the following are excluded:
- Library/Autosave Information
- Library/Caches
- Library/Logs
- Library/Mirrors
- Library/Saved Application State
- Library/Application Support/SyncServices
- Library/Icons/WebpageIcons.db
- Library/iTunes/iPod Software Updates
- Library/Safari/HistoryIndex.sk
- Library/Safari/Icons.db
- Library/Safari/WebpageIcons.db
- Album Artwork/Cache
- .sqlite-journal
- .download
- .crdownload
Additionally, several locations are automatically excluded for compatibility with third-party applications that do dubious things like store cache or temporary data outside of the system-defined cache and temporary areas. As a professional courtesy, we won’t name those here.