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  1. TrueNAS
  2. NAS-103589

BSOD on Windows 7/10 when creating/using USB stick of FreeNAS-11.2-U6.iso




      I'm trying to setup my first FreeNAS and I'm having the same problem with Windows 7 Professional and Windows 10 (on my laptop) blue screening just after completing the write of FreeNAS-11.2-U6.iso to a USB stick using Rufus. I've tried 3 sticks by 2 different manufacturers. Always same result - bsod.  If a put such infected USB stick back in a running Windows 7 machine, it immediately will bsod, making it a sort of a nasty poison pill and dangerous to have around.

      I use Rufus on a regular basis to create bootable USB sticks for other iso's (clonezilla, etc.) and never had any such issues.

      Using windbg.exe on Windows 7 to extract info from .dmp file produced by one of the blue screens. It shows an Integer division by zero exception in Windows Partition Management Driver:

      11: kd> !analyze -v
      *                                                                             *
      *                        Bugcheck Analysis                                    *
      *                                                                             *
      This is a very common bugcheck.  Usually the exception address pinpoints
      the driver/function that caused the problem.  Always note this address
      as well as the link date of the driver/image that contains this address.
      Arg1: ffffffffc0000094, The exception code that was not handled
      Arg2: fffff8801c7a8e60, The address that the exception occurred at
      Arg3: 0000000000000000, Parameter 0 of the exception
      Arg4: 0000000000000000, Parameter 1 of the exception
      Debugging Details:
      EXCEPTION_CODE: (NTSTATUS) 0xc0000094 - {EXCEPTION}  Integer division by zero.

      <removed for brevity>


      11: kd> lmvm partmgr
      start             end                 module name
      fffff880`00e66000 fffff880`00e7b000   partmgr    (pdb symbols)          c:\symcache\partmgr.pdb\7E391DC4AAAC45C4A8D0FA49903564362\partmgr.pdb
          Loaded symbol image file: partmgr.sys
          Mapped memory image file: c:\symcache\partmgr.sys\4F641BC115000\partmgr.sys
          Image path: \SystemRoot\System32\drivers\partmgr.sys
          Image name: partmgr.sys
          Timestamp:        Sat Mar 17 00:06:09 2012 (4F641BC1)
          CheckSum:         0001DFC8
          ImageSize:        00015000
          File version:     6.1.7601.17796
          Product version:  6.1.7601.17796
          File flags:       0 (Mask 3F)
          File OS:          40004 NT Win32
          File type:        3.7 Driver
          File date:        00000000.00000000
          Translations:     0000.04b0
          CompanyName:      Microsoft Corporation
          ProductName:      Microsoft® Windows® Operating System
          InternalName:     partmgr.sys
          OriginalFilename: partmgr.sys
          ProductVersion:   6.1.7601.17796
          FileVersion:      6.1.7601.17796 (win7sp1_gdr.120316-1742)
          FileDescription:  Partition Management Driver
          LegalCopyright:   © Microsoft Corporation. All rights reserved.

      Full dump analysis is attached.

      While the Windows driver should *not* bsod under any circumstance (technically it's a Microsoft driver unhandled exception), however it would be great if FreeNAS iso images could be compatible and not do this.  It seems unreasonable to require that FreeNAS users can't / shouldn't / won't use Windows 7 / 10.

      However, a USB stick can be created with the old FreeNAS-11.1-U7.iso using Rufus without bsod and also boots the installation app just fine.

      I figured that sometime ago the .iso builds changed somewhere -- so I downloaded all .iso files for FreeNAS 11.1.U7 through 11.2-U6 and copied them to a linux machine and used fdisk to view partions and discovered the partition format indeed changed after 11.1-U7.

      [root@sysresccd /mnt]# fdisk -l FreeNAS-11.1-U7.iso 
      Disk FreeNAS-11.1-U7.iso: 546.8 MiB, 573380608 bytes, 1119884 sectors
      Units: sectors of 1 * 512 = 512 bytes
      Sector size (logical/physical): 512 bytes / 512 bytes
      I/O size (minimum/optimal): 512 bytes / 512 bytes
      Disklabel type: gpt
      Disk identifier: 6A228FBC-98B8-40DF-84EE-60D9AFD8D0AC
      Device               Start     End Sectors   Size Type
      FreeNAS-11.1-U7.iso1    64     315     252   126K Microsoft basic data
      FreeNAS-11.1-U7.iso2   316    6075    5760   2.8M EFI System
      FreeNAS-11.1-U7.iso3  6076 1119819 1113744 543.8M Microsoft basic data

      versus FreeNAS-11.2-RELEASE-U1 (note also the GPT table is corrupt warning appears):

      [root@sysresccd /mnt]# fdisk -l FreeNAS-11.2-RELEASE-U1.iso 
      The backup GPT table is corrupt, but the primary appears OK, so that will be used.
      Disk FreeNAS-11.2-RELEASE-U1.iso: 575.5 MiB, 603412480 bytes, 1178540 sectors
      Units: sectors of 1 * 512 = 512 bytes
      Sector size (logical/physical): 512 bytes / 512 bytes
      I/O size (minimum/optimal): 512 bytes / 512 bytes
      Disklabel type: gpt
      Disk identifier: CEA87E34-04A8-11E9-A590-0025905AD1AE
      Device                       Start   End Sectors  Size Type
      FreeNAS-11.2-RELEASE-U1.iso1    80  1679    1600  800K EFI System
      FreeNAS-11.2-RELEASE-U1.iso2     3    31      29 14.5K FreeBSD boot

      All versions subsequently have same partition format (fdisk-log.txt attached). I can do some further testing to verify all versions after 11.1-U7 cause bsod. It's rather time consuming, and it bricks the USB stick, requiring some work with dd and fdisk to clear and repartition and restore stick back to being usable again.

      This link on freebsd forum of similar issue and possible remedy.

      Blue Screen Of Death when insert FreeBSD usb stick

      Can the .iso images for FreeNAS be created in the old format that is compatible with Windows 7/10 ? or is there another way to solve this?


        1. dump-dbg.txt
          10 kB
        2. fdisk-log.txt
          6 kB
        3. image-2019-10-24-02-40-29-285.png
          14 kB
        4. image-2019-10-25-00-43-50-604.png
          511 kB
        5. image-2019-10-25-11-45-18-417.png
          89 kB





                mav Alexander Motin
                sys-d Michael Searles
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