{ "created": "2019-06-02T15:34:01Z", "hierarchy": [ { "name": "ROOT", "type": "folder", "uri": "/ROOT" }, { "name": "Corrupted Time Machine Fix", "type": "article", "uri": "Corrupted_Time_Machine_Fix" } ], "html": "Corrupted Time Machine Fix – Nikhil's Personal Wiki

Corrupted Time Machine Fix

Didn’t work for me when backing up to a TM volume on FreeNAS, but oh well.

\n
#! /usr/bin/env bash\n#\n# Source:\n# https://www.reddit.com/r/freenas/comments/akqd2d/time_machine_must_create_a_new_backup_for_you/\n#\nset -euo pipefail\nIFS=$'\\n\\t'\n\nif [[ $(whoami) != 'root' ]]; then\n    exit 1\nfi\n\nread -r -p 'Enter Time Machine Hostname: ' HOSTNAME\nread -r -p 'Enter Share: ' SHARE\nread -r -p 'Enter Username: ' USERNAME\nread -r -s -p 'Enter Password: ' PASSWORD\n\nTM_NAME=$(hostname -s | sed -e 's/-/ /g')\nMOUNT=/Volumes/TimeMachine\nSPARSEBUNDLE=$MOUNT/$TM_NAME.sparsebundle\nPLIST=$SPARSEBUNDLE/com.apple.TimeMachine.MachineID.plist\n\necho "Disabling Time Machine"\ntmutil disable\n\necho "Mounting volume"\nmkdir -p $MOUNT\nmount_afp "afp://$USERNAME:$PASSWORD@$HOSTNAME/$SHARE" "$MOUNT"\n\n# If mounting via SMB\n# mount_smbfs "smb://$USERNAME:$PASSWORD@$HOSTNAME/$SHARE" "$MOUNT"\n\necho "Changing file and folder flags"\nchflags -R nouchg "$SPARSEBUNDLE"\n\necho "Attaching sparse bundle"\nDISK="$(hdiutil attach -nomount -readwrite -noverify -noautofsck "${SPARSEBUNDLE}" | grep Apple_HFS | cut -f 1 | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')"\necho "$DISK"\nread -r -p "Press enter to continue"\n\necho "Repairing volume"\n#diskutil repairVolume $DISK\nfsck_hfs -fry $DISK\n\necho "Fixing Properties"\ncp "$PLIST" "$PLIST.backup"\nsed -e '/RecoveryBackupDeclinedDate/{N;d;}'   \\\n-e '/VerificationState/{n;s/2/0/;}'       \\\n"$PLIST.backup" \\\n> "$PLIST"\n\necho "Unmounting volumes"\nhdiutil detach "$DISK"\numount "$MOUNT"\n\necho "Enabling Time Machine"\ntmutil enable\n\necho "Starting backup"\ntmutil startbackup\n\nexit 0\n
", "id": "c891830c-5809-50fc-a891-68772335def2", "modified": "2026-01-13T18:47:28Z", "revisions": [ { "authorEmail": "mail@nikhil.io", "authorName": "Nikhil Anand", "date": "2026-01-13T18:47:28Z", "id": "2436477560f26e23d00a24add1cbfeafdca4af78", "shortId": "24364775", "subject": "No compression\n", "content": "Didn't work for me when backing up to a TM volume on FreeNAS, but oh well.\n\n```bash\n#! /usr/bin/env bash\n#\n# Source:\n# https://www.reddit.com/r/freenas/comments/akqd2d/time_machine_must_create_a_new_backup_for_you/\n#\nset -euo pipefail\nIFS=$'\\n\\t'\n\nif [[ $(whoami) != 'root' ]]; then\n exit 1\nfi\n\nread -r -p 'Enter Time Machine Hostname: ' HOSTNAME\nread -r -p 'Enter Share: ' SHARE\nread -r -p 'Enter Username: ' USERNAME\nread -r -s -p 'Enter Password: ' PASSWORD\n\nTM_NAME=$(hostname -s | sed -e 's/-/ /g')\nMOUNT=/Volumes/TimeMachine\nSPARSEBUNDLE=$MOUNT/$TM_NAME.sparsebundle\nPLIST=$SPARSEBUNDLE/com.apple.TimeMachine.MachineID.plist\n\necho \"Disabling Time Machine\"\ntmutil disable\n\necho \"Mounting volume\"\nmkdir -p $MOUNT\nmount_afp \"afp://$USERNAME:$PASSWORD@$HOSTNAME/$SHARE\" \"$MOUNT\"\n\n# If mounting via SMB\n# mount_smbfs \"smb://$USERNAME:$PASSWORD@$HOSTNAME/$SHARE\" \"$MOUNT\"\n\necho \"Changing file and folder flags\"\nchflags -R nouchg \"$SPARSEBUNDLE\"\n\necho \"Attaching sparse bundle\"\nDISK=\"$(hdiutil attach -nomount -readwrite -noverify -noautofsck \"${SPARSEBUNDLE}\" | grep Apple_HFS | cut -f 1 | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')\"\necho \"$DISK\"\nread -r -p \"Press enter to continue\"\n\necho \"Repairing volume\"\n#diskutil repairVolume $DISK\nfsck_hfs -fry $DISK\n\necho \"Fixing Properties\"\ncp \"$PLIST\" \"$PLIST.backup\"\nsed -e '/RecoveryBackupDeclinedDate/{N;d;}' \\\n-e '/VerificationState/{n;s/2/0/;}' \\\n\"$PLIST.backup\" \\\n> \"$PLIST\"\n\necho \"Unmounting volumes\"\nhdiutil detach \"$DISK\"\numount \"$MOUNT\"\n\necho \"Enabling Time Machine\"\ntmutil enable\n\necho \"Starting backup\"\ntmutil startbackup\n\nexit 0\n```\n" }, { "authorEmail": "mail@nikhil.io", "authorName": "Nikhil Anand", "date": "2019-06-02T15:34:01Z", "id": "80e0b79a9a091aca9e55c38430d22a446d38cc17", "shortId": "80e0b79a", "subject": "Create Corrupted Time Machine Fix.md\n", "content": "Didn't work for me when backing up to a TM volume on FreeNAS, but oh well.\n\n```bash\n#! /usr/bin/env bash\n#\n# Source:\n# https://www.reddit.com/r/freenas/comments/akqd2d/time_machine_must_create_a_new_backup_for_you/\n#\nset -euo pipefail\nIFS=$'\\n\\t'\n\nif [[ $(whoami) != 'root' ]]; then\n exit 1\nfi\n\nread -r -p 'Enter Time Machine Hostname: ' HOSTNAME\nread -r -p 'Enter Share: ' SHARE\nread -r -p 'Enter Username: ' USERNAME\nread -r -s -p 'Enter Password: ' PASSWORD\n\nTM_NAME=$(hostname -s | sed -e 's/-/ /g')\nMOUNT=/Volumes/TimeMachine\nSPARSEBUNDLE=$MOUNT/$TM_NAME.sparsebundle\nPLIST=$SPARSEBUNDLE/com.apple.TimeMachine.MachineID.plist\n\necho \"Disabling Time Machine\"\ntmutil disable\n\necho \"Mounting volume\"\nmkdir -p $MOUNT\nmount_afp \"afp://$USERNAME:$PASSWORD@$HOSTNAME/$SHARE\" \"$MOUNT\"\n\n# If mounting via SMB\n# mount_smbfs \"smb://$USERNAME:$PASSWORD@$HOSTNAME/$SHARE\" \"$MOUNT\"\n\necho \"Changing file and folder flags\"\nchflags -R nouchg \"$SPARSEBUNDLE\"\n\necho \"Attaching sparse bundle\"\nDISK=\"$(hdiutil attach -nomount -readwrite -noverify -noautofsck \"${SPARSEBUNDLE}\" | grep Apple_HFS | cut -f 1 | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')\"\necho \"$DISK\"\nread -r -p \"Press enter to continue\"\n\necho \"Repairing volume\"\n#diskutil repairVolume $DISK\nfsck_hfs -fry $DISK\n\necho \"Fixing Properties\"\ncp \"$PLIST\" \"$PLIST.backup\"\nsed -e '/RecoveryBackupDeclinedDate/{N;d;}' \\\n-e '/VerificationState/{n;s/2/0/;}' \\\n\"$PLIST.backup\" \\\n> \"$PLIST\"\n\necho \"Unmounting volumes\"\nhdiutil detach \"$DISK\"\numount \"$MOUNT\"\n\necho \"Enabling Time Machine\"\ntmutil enable\n\necho \"Starting backup\"\ntmutil startbackup\n\nexit 0\n```\n" } ], "sizeInBytes": 1609, "source": "Didn't work for me when backing up to a TM volume on FreeNAS, but oh well.\n\n```bash\n#! /usr/bin/env bash\n#\n# Source:\n# https://www.reddit.com/r/freenas/comments/akqd2d/time_machine_must_create_a_new_backup_for_you/\n#\nset -euo pipefail\nIFS=$'\\n\\t'\n\nif [[ $(whoami) != 'root' ]]; then\n exit 1\nfi\n\nread -r -p 'Enter Time Machine Hostname: ' HOSTNAME\nread -r -p 'Enter Share: ' SHARE\nread -r -p 'Enter Username: ' USERNAME\nread -r -s -p 'Enter Password: ' PASSWORD\n\nTM_NAME=$(hostname -s | sed -e 's/-/ /g')\nMOUNT=/Volumes/TimeMachine\nSPARSEBUNDLE=$MOUNT/$TM_NAME.sparsebundle\nPLIST=$SPARSEBUNDLE/com.apple.TimeMachine.MachineID.plist\n\necho \"Disabling Time Machine\"\ntmutil disable\n\necho \"Mounting volume\"\nmkdir -p $MOUNT\nmount_afp \"afp://$USERNAME:$PASSWORD@$HOSTNAME/$SHARE\" \"$MOUNT\"\n\n# If mounting via SMB\n# mount_smbfs \"smb://$USERNAME:$PASSWORD@$HOSTNAME/$SHARE\" \"$MOUNT\"\n\necho \"Changing file and folder flags\"\nchflags -R nouchg \"$SPARSEBUNDLE\"\n\necho \"Attaching sparse bundle\"\nDISK=\"$(hdiutil attach -nomount -readwrite -noverify -noautofsck \"${SPARSEBUNDLE}\" | grep Apple_HFS | cut -f 1 | sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//')\"\necho \"$DISK\"\nread -r -p \"Press enter to continue\"\n\necho \"Repairing volume\"\n#diskutil repairVolume $DISK\nfsck_hfs -fry $DISK\n\necho \"Fixing Properties\"\ncp \"$PLIST\" \"$PLIST.backup\"\nsed -e '/RecoveryBackupDeclinedDate/{N;d;}' \\\n-e '/VerificationState/{n;s/2/0/;}' \\\n\"$PLIST.backup\" \\\n> \"$PLIST\"\n\necho \"Unmounting volumes\"\nhdiutil detach \"$DISK\"\numount \"$MOUNT\"\n\necho \"Enabling Time Machine\"\ntmutil enable\n\necho \"Starting backup\"\ntmutil startbackup\n\nexit 0\n```\n", "title": "Corrupted Time Machine Fix", "untracked": false, "uri": "/Corrupted_Time_Machine_Fix", "relativePath": "Corrupted Time Machine Fix.md" }