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This is extremely aggravating and puzzling: I have both Windows 10 Pro (build 1703) and Windows 7 Pro (service pack 2 with the latest updates) installed on different NTFS disks/partitions on the same computer (actually, I have two computers with both installed). Here's the aggravating problem: If I first boot Windows 10 and then boot into Windows 7, I get "Disk needs to be checked for inconsistency" and runs CHKDSK on most, if not all, of my dozen disks & partitions. While doing so, it always finds numerous errors and repairs them. When all those CHKDSKs are finally done (after at least 15 minutes) it usually automatically reboots and again I get lots of "inconsistency" errors and CHKDSK runs (not all of which find anything wrong). If I keep rebooting Win 7 without ever booting Win 10, eventually it boots cleanly without any "inconsistency" errors or CHKDSKs. But after Windows 7 boots without any CHKDSK problems, if I then boot into Windows 10, it produces a dozen "inconsistency" errors and CHKDSK runs and finds and corrects a great many NTFS errors! Eventually, as I described above regarding Windows 7, Windows 10 will boot without errors or CHKDSK runs. But if I then boot into Windows 7, the whole aggravating, absurd, annoying inconsistency errors and CHKDSK runs start all over again! It seems to me that this means that Windows 7 CHKDSK is utterly incompatible with Windows 10 CHKDSK (at least for NTFS volumes)! AARG! Is this a known and acknowledged problem? Or is this situation unique to me? Please help

I was using my external HDD (2TB Seagate) in order to transfer files. During that, I noticed some malfunctions on my system (it was running too slow, Windows Explorer crashed). When Explorer crashed, file transportation stopped. I was afraid, but I tried to access my data and it seemed to be working. I tried to open a movie but it couldn't load. I thought of restarting, which took so long... So I unplugged the HDD and at that time it managed to shut down. I logged on to Vista but the disk couldn't be mounted. I plugged it but nothing happened. I unplugged it and I heard this specific sound that notifies that something has been unplugged. I thought of logging to Ubuntu 10.04 and see what I can do. I plugged the HDD, but I couldn't see it. I opened GParted but I couldn't see it either. I tried with Disc Utility and there it was! I tried to mount it but a got an error message stating to run chkdsk. I typed chkdsk F: /i for a quick check and I am waiting...It didn't seem however to be doing something... Having external drive plugged in causes serious problems on my system's speed. I unplugged it. As soon as I did it, the chkdsk has finished. The answer is that the file system isn't NTFS but RAW. I then tried to fix this issue using testdisk. The log from my first attempt is the following Sat Oct 27 10:51:01 2012 Command line: TestDisk[/size][/font][/color] [color=#273D49][font=arial][size=3]TestDisk 6.11, Data Recovery Utility, April 2009 Christophe GRENIER [/size][/font][/color] [color=#273D49][font=arial][size=3]OS: Linux, kernel 2.6.32-42-generic (#95-Ubuntu SMP Wed Jul 25 15:56:09 UTC 2012) Compiler: GCC 4.4 - Jun 23 2009 17:48:38 ext2fs lib: 1.41.11, ntfs lib: 10:0:0, reiserfs lib: none, ewf lib: none /dev/sda: LBA, HPA, LBA48, DCO support /dev/sda: size 488397168 sectors /dev/sda: user_max 488397168 sectors /dev/sda: native_max 488397168 sectors /dev/sda: dco 488397168 sectors Warning: can't get size for Disk /dev/mapper/control - 0 B - CHS 1 1 1, sector size=512 Hard disk list Disk /dev/sda - 250 GB / 232 GiB - CHS 30401 255 63, sector size=512 - ATA WDC WD2500BEVS-2 Disk /dev/sdd - 4009 MB / 3824 MiB - CHS 1018 124 62, sector size=512 - FLASH Drive SM_USB20 Disk /dev/sde - 2000 GB / 1863 GiB - CHS 243201 255 63, sector size=512 - Seagate Desktop[/size][/font][/color] [color=#273D49][font=arial][size=3]Partition table type (auto): Intel Disk /dev/sde - 2000 GB / 1863 GiB - Seagate Desktop Partition table type: Intel[/size][/font][/color] [color=#273D49][font=arial][size=3]Interface Advanced Geometry from i386 MBR: head=255 sector=63 NTFS at 0/1/1 get_geometry_from_list_part_aux head=255 nbr=2 get_geometry_from_list_part_aux head=8 nbr=1 get_geometry_from_list_part_aux head=16 nbr=1 get_geometry_from_list_part_aux head=32 nbr=1 get_geometry_from_list_part_aux head=64 nbr=1 get_geometry_from_list_part_aux head=128 nbr=1 get_geometry_from_list_part_aux head=240 nbr=1 get_geometry_from_list_part_aux head=255 nbr=2 1 P HPFS - NTFS 0 1 1 243200 254 63 3907024002 [Expansion Drive] NTFS, 2000 GB / 1863 GiB[/size][/font][/color] [color=#273D49][font=arial][size=3]ntfs_boot_sector 1 P HPFS - NTFS 0 1 1 243200 254 63 3907024002 [Expansion Drive] NTFS, 2000 GB / 1863 GiB NTFS at 0/1/1 file_pread(6,16,buffer,3907024064(243200/254/63)) read err: Input/output error filesystem size 3907024002 1 sectors_per_cluster 8 0 mft_lcn 786432 0 mftmirr_lcn 244189000 0 clusters_per_mft_record -10 0 clusters_per_index_record 1 0 Boot sector Status: OK[/size][/font][/color] [color=#273D49][font=arial][size=3]Backup boot sector ntfs_boot_sector: Can't read backup boot sector. Status: Bad[/size][/font][/color] [color=#273D49][font=arial][size=3]Sectors are not identical.[/size][/font][/color] [color=#273D49][font=arial][size=3]A valid NTFS Boot sector must be present in order to access any data; even if the partition is not bootable. Failed to read $MFTMirr: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. Failed to read index block: Input/output error. ntfs_device_testdisk_io_ioctl() unimplemented file_pread(6,8,buffer,1953512063(121600/127/63)) read err: Input/output error ntfs_device_testdisk_io_ioctl() unimplemented NTFS filesystem need to be repaired.[/size][/font][/color] [color=#273D49][font=arial][size=3]file_pread(6,8,buffer,1953512143(121600/129/17)) read err: Input/output error ntfs_readdir failed Directory / 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 ElectroMagnetism file_pread(6,8,buffer,660335(41/26/33)) read err: Input/output error ntfs_readdir failed Directory /ElectroMagnetism 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. ntfs_readdir failed Directory / 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 ElectroMagnetism ntfs_readdir failed Directory /ElectroMagnetism 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. ntfs_readdir failed Directory / 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 ElectroMagnetism ntfs_readdir failed Directory /ElectroMagnetism 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. ntfs_readdir failed Directory / 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 ElectroMagnetism ntfs_readdir failed Directory /ElectroMagnetism 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. ntfs_readdir failed Directory / 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 ElectroMagnetism ntfs_readdir failed Directory /ElectroMagnetism 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. ntfs_readdir failed Directory / 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 ElectroMagnetism ntfs_readdir failed Directory /ElectroMagnetism 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. ntfs_readdir failed Directory / 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 . 5 dr-xr-xr-x 0 0 0 25-May-2011 23:32 .. 62 dr-xr-xr-x 0 0 0 5-Aug-2011 22:16 ElectroMagnetism[/size][/font][/color] [color=#273D49][font=arial][size=3]ntfs_boot_sector 1 P HPFS - NTFS 0 1 1 243200 254 63 3907024002 [Expansion Drive] NTFS, 2000 GB / 1863 GiB NTFS at 0/1/1 filesystem size 3907024002 1 sectors_per_cluster 8 0 mft_lcn 786432 0 mftmirr_lcn 244189000 0 clusters_per_mft_record -10 0 clusters_per_index_record 1 0 Boot sector Status: OK[/size][/font][/color] [color=#273D49][font=arial][size=3]Backup boot sector ntfs_boot_sector: Can't read backup boot sector. Status: Bad[/size][/font][/color] [color=#273D49][font=arial][size=3]Sectors are not identical.[/size][/font][/color] [color=#273D49][font=arial][size=3]A valid NTFS Boot sector must be present in order to access any data; even if the partition is not bootable. Failed to read $MFTMirr: Input/output error. I also run photorec. After some passes there are no files recovered. The report from the procedure is <?xml version='1.0' encoding='UTF-8'?> <dfxml xmloutputversion='1.0'> <metadata xmlns=' ' xmlns:xsi=' ' xmlns:dc=' '> <dc:type>Carve Report</dc:type> </metadata> <creator> <package>PhotoRec</package> <version>6.13</version> <build_environment> <compiler>GCC 4.6</compiler> <compilation_date>2012-02-05T07:15:52</compilation_date> <library name='libext2fs' version='1.42'/> <library name='libewf' version='none'/> <library name='libjpeg' version='80'/> <library name='libntfs' version='10:0:0'/> </build_environment> <execution_environment> <os_sysname>Linux</os_sysname> <os_release>3.2.0-33-generic</os_release> <os_version>#52-Ubuntu SMP Thu Oct 18 16:29:15 UTC 2012</os_version> <host>MITsMag</host> <arch>x86_64</arch> <uid>0</uid> <start_time>2012-11-19T19:04:17+0200</start_time> </execution_environment> </creator> <source> <image_filename>/dev/sdb</image_filename> <sectorsize>512</sectorsize> <device_model>Seagate Desktop</device_model> <image_size>2000398934016</image_size> <volume> <byte_runs> <byte_run offset='0' img_offset='32256' len='2000396289024'/> </byte_runs> </volume> </source> <configuration> </configuration> </dfxml> All the previous attempts were done on ubuntu because vista cannot see the HDD. What can I do to recover my precious data?http://www.vistaforu...es/confused.gif Thank you in advance!