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Premiere XL Model TCD748000

Discussion in 'TiVo Upgrade Center' started by SuMeRiaN, May 28, 2013.

  1. RCN

    RCN New Member

    11
    0
    Jun 26, 2014
    Annapolis, MD
    Okay, I tried that, but I'm not sure where to look for offset 0x4?

    Here's my command and output:

    hexdump -C -n 512 /dev/sda

    00000000 [...hex...] |....root=/dev/sd|
    00000010 [...hex...] |a4.dsscon=true r|
    00000020 [...hex...] |unfactorydiag=tr|
    00000030 [...hex...] |ue brev=0x1060..|
    00000040 [...hex...] |................|
    *
    00000130 [...hex...] |&..o!)j<...|....|
    00000140 [...hex...] |................|
    *
    000001f0 [...hex...] |............tpm.|
    00000200
     
  2. squint

    squint New Member

    846
    0
    Jun 15, 2008
    Try hexdump -C -n 512 /dev/sdc10
     
  3. RCN

    RCN New Member

    11
    0
    Jun 26, 2014
    Annapolis, MD
    Okay, I tried that -- here's my command and output:

    hexdump -C -n 512 /dev/sda10

    00000000 [...hex...] |....w515.0\.....|
    00000010 [...hex...] |.......@...@....|
    00000020 [...hex...] |..../dev/sda10 /|
    00000030 [...hex...] |dev/sda11 /dev/s|
    00000040 [...hex...] |da12 /dev/sda13.|
    00000050 [...hex...] |................|
    *
    000000a0 [...hex...] |............s...|
    000000b0 [...hex...] |................|
    000000c0 [...hex...] |................|
    000000d0 [...hex...] |.......a........|
    000000e0 [...hex...] |................|
    000000f0 [...hex...] |...........x....|
    00000100 [...hex...] |... .,.....g....|
    00000110 [...hex...] |................|
    00000120 [...hex...] |................|
    *
    00000200

    Thank you very much for your help,
    Rick
     
  4. RCN

    RCN New Member

    11
    0
    Jun 26, 2014
    Annapolis, MD
    I think I'm starting to understand the difference between sda and sda10. Those are the partitions, right?

    Should the hexdump for sda10 and sda12 be similar?

    Here's my Partition Map:

    pdisk -l /dev/sda

    #: type name length base ( size )
    1 Apple_partition_map Apple 63 @ 1
    2 Image Bootstrap 1 1 @ 1074438869
    3 Image Kernel 1 16384 @ 1074438870 ( 8.0M)
    4 Ext2 Root 1 524288 @ 1074455254 (256.0M)
    5 Image Bootstrap 2 1 @ 1074979542
    6 Image Kernel 2 16384 @ 1074979543 ( 8.0M)
    7 Ext2 Root 2 524288 @ 1074995927 (256.0M)
    8 Swap Linux swap 262144 @ 1075520215 (128.0M)
    9 Ext2 /var 1048576 @ 1075782359 (512.0M)
    10 MFS MFS application region 1638400 @ 1083122391 (800.0M)
    11 MFS MFS media region 867125977 @ 1086399191 (413.5G)
    12 MFS MFS application region 2 1638400 @ 1084760791 (800.0M)
    13 MFS MFS media region 2 1074438805 @ 64 (512.3G)
    14 Ext2 SQLite 6291456 @ 1076830935 ( 3.0G)
     
  5. jmbach

    jmbach der Neuerer

    1,556
    10
    Jan 1, 2009
    Hard to tell from your output but the magic signature maybe gone. Need to see the detail for the first 16 bytes of the block.
    The hex dumps will be different for sda10 and sda12
     
  6. jmbach

    jmbach der Neuerer

    1,556
    10
    Jan 1, 2009
    It would be nice to see the backup header block to see if it matches the main header block. The back up header block is the last block of sda10.

    If the backup header is intact, you may be able to fix the main header with it.
     
  7. jmbach

    jmbach der Neuerer

    1,556
    10
    Jan 1, 2009
    Partition map looks okay
     
  8. telemark

    telemark New Member

    1,544
    1
    Nov 12, 2013
    RCN: The stuff you're leaving out with "...hex..." is the stuff we need to look at. Could you add it back, and mark it with CODE blocks.
     
  9. RCN

    RCN New Member

    11
    0
    Jun 26, 2014
    Annapolis, MD
    Okay, I will try to make a copy of that data and post it here. I'm not quite sure how to copy the hex dumps and post them.

    Thanks,
    Rick
     
  10. RCN

    RCN New Member

    11
    0
    Jun 26, 2014
    Annapolis, MD
    Thanks telemark -- I will copy the hex and post it. I actually typed all that data in my previous posts by hand...

    So far, I've been looking at the hex dumps using the command prompt in MFSlive, while posting the results on another computer. I need to figure out how to look at the hex in Windows, or else learn enough Linux to be able to copy the data onto a USB stick. I'm not sure which is easier -- any ideas?

    Thanks,
    Rick
     
  11. squint

    squint New Member

    846
    0
    Jun 15, 2008
    People here use HxD in Windows. You can hex edit drives with it.
     
  12. RCN

    RCN New Member

    11
    0
    Jun 26, 2014
    Annapolis, MD
    Perfect. I just installed the HxD editor and I'll use it to copy the hex dumps.

    Thanks for pointing me in the right direction,
    Rick
     
  13. jmbach

    jmbach der Neuerer

    1,556
    10
    Jan 1, 2009
    Or you can use iBored to edit and manipulate drives as well.
     
  14. RCN

    RCN New Member

    11
    0
    Jun 26, 2014
    Annapolis, MD
    Thanks -- I'll try that one too. Since I've never done any hex editing before (or viewing, for that matter), I'm open to trying whatever works best. For me, that probably means whichever is more simple to use. I will try and post the results tonight.

    I've just read some of the stuff you've all been posting in the Developers Corner and I am truly amazed at the depth of MFS knowledge that's been reverse engineered over the years.

    Thanks,
    Rick
     
  15. squint

    squint New Member

    846
    0
    Jun 15, 2008
    Is there a way to view more than one block at a time in iBored?
     
  16. jmbach

    jmbach der Neuerer

    1,556
    10
    Jan 1, 2009
    I don't know. Never tried to do that. I'll look into it and see what I can find. My gut feeling is no.
     

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