Accidentally over wrote a ISO to my time machine backup disk












0














Hello I'm looking for some help recovering the data from a time machine sparseimage file.



At some point I must have accidentally wrote an iso image to my mounted Time Machine backup instead of the USB disk it was intended. Currently when I run



hdiutil attach -nomount -noverify -noautofsck /Volumes/AirPort Disk/Tim’s MacBook Pro.sparsebundle


I get



/dev/disk2              FDisk_partition_scheme
/dev/disk2s2 0xEF


And when I mount it using mount_cd9660, I can see the contents of the image I intended to write to a USB stick.



However if I access the image via Finder and view its contents, I can see



    Tims-MBP:~ timpotter$ ls -l /Volumes/AirPort Disk/Tim’s MacBook Pro.sparsebundle/
total 56
-rwxrwxrwx 1 timpotter staff 500 Mar 12 2018 Info.bckup
-rwxrwxrwx 1 timpotter staff 500 Mar 12 2018 Info.plist
drwxrwxrwx 1 timpotter staff 502442 Nov 5 16:53 bands
-rwxrwxrwx 1 timpotter staff 516 Dec 15 10:20 com.apple.TimeMachine.MachineID.bckup
-rwxrwxrwx 1 timpotter staff 516 Dec 15 10:20 com.apple.TimeMachine.MachineID.plist
-rwxrwxrwx 1 timpotter staff 1137 Nov 5 14:52 com.apple.TimeMachine.Results.plist
-rwxrwxrwx 1 timpotter staff 7892 Nov 5 16:52 com.apple.TimeMachine.SnapshotHistory.plist
-rwxrwxrwx 1 timpotter staff 0 Mar 12 2018 token


Is it safe to simply copy the contents to a newly created sparseimage file? Any thoughts or suggestions?










share|improve this question


















  • 2




    The files you see in Finder (and with ls), are mostly information about the backup, not the actual backed-up data. The actual data is down in the "bands" subdirectory, and that's what got overwritten by the ISO image. There'll probably be some non-overwritten data (e.g. if you had a 50GB backup and overwrote it with a 500MB ISO, there'll be about 49.5GB of intact data), but it may include only parts of some files, and may not include information about which files are which. Data recovery will be difficult, and the results probably fragmentary.
    – Gordon Davisson
    Dec 15 at 23:45
















0














Hello I'm looking for some help recovering the data from a time machine sparseimage file.



At some point I must have accidentally wrote an iso image to my mounted Time Machine backup instead of the USB disk it was intended. Currently when I run



hdiutil attach -nomount -noverify -noautofsck /Volumes/AirPort Disk/Tim’s MacBook Pro.sparsebundle


I get



/dev/disk2              FDisk_partition_scheme
/dev/disk2s2 0xEF


And when I mount it using mount_cd9660, I can see the contents of the image I intended to write to a USB stick.



However if I access the image via Finder and view its contents, I can see



    Tims-MBP:~ timpotter$ ls -l /Volumes/AirPort Disk/Tim’s MacBook Pro.sparsebundle/
total 56
-rwxrwxrwx 1 timpotter staff 500 Mar 12 2018 Info.bckup
-rwxrwxrwx 1 timpotter staff 500 Mar 12 2018 Info.plist
drwxrwxrwx 1 timpotter staff 502442 Nov 5 16:53 bands
-rwxrwxrwx 1 timpotter staff 516 Dec 15 10:20 com.apple.TimeMachine.MachineID.bckup
-rwxrwxrwx 1 timpotter staff 516 Dec 15 10:20 com.apple.TimeMachine.MachineID.plist
-rwxrwxrwx 1 timpotter staff 1137 Nov 5 14:52 com.apple.TimeMachine.Results.plist
-rwxrwxrwx 1 timpotter staff 7892 Nov 5 16:52 com.apple.TimeMachine.SnapshotHistory.plist
-rwxrwxrwx 1 timpotter staff 0 Mar 12 2018 token


Is it safe to simply copy the contents to a newly created sparseimage file? Any thoughts or suggestions?










share|improve this question


















  • 2




    The files you see in Finder (and with ls), are mostly information about the backup, not the actual backed-up data. The actual data is down in the "bands" subdirectory, and that's what got overwritten by the ISO image. There'll probably be some non-overwritten data (e.g. if you had a 50GB backup and overwrote it with a 500MB ISO, there'll be about 49.5GB of intact data), but it may include only parts of some files, and may not include information about which files are which. Data recovery will be difficult, and the results probably fragmentary.
    – Gordon Davisson
    Dec 15 at 23:45














0












0








0







Hello I'm looking for some help recovering the data from a time machine sparseimage file.



At some point I must have accidentally wrote an iso image to my mounted Time Machine backup instead of the USB disk it was intended. Currently when I run



hdiutil attach -nomount -noverify -noautofsck /Volumes/AirPort Disk/Tim’s MacBook Pro.sparsebundle


I get



/dev/disk2              FDisk_partition_scheme
/dev/disk2s2 0xEF


And when I mount it using mount_cd9660, I can see the contents of the image I intended to write to a USB stick.



However if I access the image via Finder and view its contents, I can see



    Tims-MBP:~ timpotter$ ls -l /Volumes/AirPort Disk/Tim’s MacBook Pro.sparsebundle/
total 56
-rwxrwxrwx 1 timpotter staff 500 Mar 12 2018 Info.bckup
-rwxrwxrwx 1 timpotter staff 500 Mar 12 2018 Info.plist
drwxrwxrwx 1 timpotter staff 502442 Nov 5 16:53 bands
-rwxrwxrwx 1 timpotter staff 516 Dec 15 10:20 com.apple.TimeMachine.MachineID.bckup
-rwxrwxrwx 1 timpotter staff 516 Dec 15 10:20 com.apple.TimeMachine.MachineID.plist
-rwxrwxrwx 1 timpotter staff 1137 Nov 5 14:52 com.apple.TimeMachine.Results.plist
-rwxrwxrwx 1 timpotter staff 7892 Nov 5 16:52 com.apple.TimeMachine.SnapshotHistory.plist
-rwxrwxrwx 1 timpotter staff 0 Mar 12 2018 token


Is it safe to simply copy the contents to a newly created sparseimage file? Any thoughts or suggestions?










share|improve this question













Hello I'm looking for some help recovering the data from a time machine sparseimage file.



At some point I must have accidentally wrote an iso image to my mounted Time Machine backup instead of the USB disk it was intended. Currently when I run



hdiutil attach -nomount -noverify -noautofsck /Volumes/AirPort Disk/Tim’s MacBook Pro.sparsebundle


I get



/dev/disk2              FDisk_partition_scheme
/dev/disk2s2 0xEF


And when I mount it using mount_cd9660, I can see the contents of the image I intended to write to a USB stick.



However if I access the image via Finder and view its contents, I can see



    Tims-MBP:~ timpotter$ ls -l /Volumes/AirPort Disk/Tim’s MacBook Pro.sparsebundle/
total 56
-rwxrwxrwx 1 timpotter staff 500 Mar 12 2018 Info.bckup
-rwxrwxrwx 1 timpotter staff 500 Mar 12 2018 Info.plist
drwxrwxrwx 1 timpotter staff 502442 Nov 5 16:53 bands
-rwxrwxrwx 1 timpotter staff 516 Dec 15 10:20 com.apple.TimeMachine.MachineID.bckup
-rwxrwxrwx 1 timpotter staff 516 Dec 15 10:20 com.apple.TimeMachine.MachineID.plist
-rwxrwxrwx 1 timpotter staff 1137 Nov 5 14:52 com.apple.TimeMachine.Results.plist
-rwxrwxrwx 1 timpotter staff 7892 Nov 5 16:52 com.apple.TimeMachine.SnapshotHistory.plist
-rwxrwxrwx 1 timpotter staff 0 Mar 12 2018 token


Is it safe to simply copy the contents to a newly created sparseimage file? Any thoughts or suggestions?







mac backup






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asked Dec 15 at 19:32









Tim Potter

11




11








  • 2




    The files you see in Finder (and with ls), are mostly information about the backup, not the actual backed-up data. The actual data is down in the "bands" subdirectory, and that's what got overwritten by the ISO image. There'll probably be some non-overwritten data (e.g. if you had a 50GB backup and overwrote it with a 500MB ISO, there'll be about 49.5GB of intact data), but it may include only parts of some files, and may not include information about which files are which. Data recovery will be difficult, and the results probably fragmentary.
    – Gordon Davisson
    Dec 15 at 23:45














  • 2




    The files you see in Finder (and with ls), are mostly information about the backup, not the actual backed-up data. The actual data is down in the "bands" subdirectory, and that's what got overwritten by the ISO image. There'll probably be some non-overwritten data (e.g. if you had a 50GB backup and overwrote it with a 500MB ISO, there'll be about 49.5GB of intact data), but it may include only parts of some files, and may not include information about which files are which. Data recovery will be difficult, and the results probably fragmentary.
    – Gordon Davisson
    Dec 15 at 23:45








2




2




The files you see in Finder (and with ls), are mostly information about the backup, not the actual backed-up data. The actual data is down in the "bands" subdirectory, and that's what got overwritten by the ISO image. There'll probably be some non-overwritten data (e.g. if you had a 50GB backup and overwrote it with a 500MB ISO, there'll be about 49.5GB of intact data), but it may include only parts of some files, and may not include information about which files are which. Data recovery will be difficult, and the results probably fragmentary.
– Gordon Davisson
Dec 15 at 23:45




The files you see in Finder (and with ls), are mostly information about the backup, not the actual backed-up data. The actual data is down in the "bands" subdirectory, and that's what got overwritten by the ISO image. There'll probably be some non-overwritten data (e.g. if you had a 50GB backup and overwrote it with a 500MB ISO, there'll be about 49.5GB of intact data), but it may include only parts of some files, and may not include information about which files are which. Data recovery will be difficult, and the results probably fragmentary.
– Gordon Davisson
Dec 15 at 23:45















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