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I upgraded my THD with 2TB internal storage, pics inside

Discussion in 'TiVo Series3 HDTV DVRs' started by ciper, Dec 9, 2008.

  1. Rolow

    Rolow Member

    Jun 1, 2004
    ciper is your power supply still holding up? Did you do any other mods to the box like the second fan you talked about? What temperature is it running?
  2. markboy8

    markboy8 New Member

    Sep 30, 2007
    Great setup cipher. I'm in the same situation as jnaji -- my tivoHD power supply died and I need to replace (hopefully quickly), and have an ATX PSU lying around that I can use. Can you provide the details on which pins on the ATX 20/24 connector need to be mapped to which pins on the TivoHD 14 pin connector. Thanks!!
  3. ciper

    ciper New Member

    Nov 4, 2004
    My power supply is working fine. In fact I probably put it through way more stress than I should with repeated powerdowns LOL.

    Right now it is 76 degrees Fahrenheit and my TiVo is displaying "46C (Normal" which is 114F.

    I never needed the second fan. I think my Scotch Tape modification helped to keep the system cooled properly.

    If you look at the TiVo PS connector the wires are actually color coded properly. Your ATX power supply should also be color coded so it is simply a matter of making a chart that says (for example) -

    Red on TiVo = red on ATX
    White on TiVo = Purple on ATX

    OK I was feeling nice today and dug out my adapter cable. I'll tell you the wire colors I have. The TiVo plug is only 14 pins so the extra section of the plug just hangs in the open. I stuck the wires back into the molex connector on this extra area so they weren't floating around. You could just tape them up if you like.

    Get the TiVo HD case open with the front closest to like it is this picture.


    I bought a 20 to 24 pin power supply adapter so that I didn't have to modify the power supply itself. Starting with the pin closest to you on the left and then moving towards the back then move to the second column with the pin closest to you on the right side and move towards the back. So in other words the pins on the side farthest from the power supply are 1-7. Those with an * are unused by the TiVo and could be wired however you like or even left empty. I am only including them because my picture shows them.

    Pin - Color
    1 - orange
    2 - black
    3 - black
    4 - black
    5 - red
    6 - black
    7 - black
    * - grey
    * - black
    * - yellow
    * - no wire
    * - orange
    Column two
    8 - orange
    9 - no wire
    10 - yellow
    11 - black
    12 - grey
    13 - black
    14 - black
    * - red
    * - black
    * - black
    * - black
    * - orange

    The TiVo only needs the following six color of wires -
    Orange = +3.3 volts
    Black = Common/Ground
    Yellow = +12 volts
    Red = +5 volts
    Grey = Power good signal. This is usually +5 volts which doesn't have power until the power supply is stabilized.

    Green which is not connected directly to the TiVo. The Green wire needs to be grounded so the power supply turns on.
  4. MikeAndrews

    MikeAndrews Registered abuser

    Jan 17, 2002
    Wait, wait I thought there was a max of 1.2TB per drive, too.

    You presented a single 2.2GB DRIVE to the TiVo and it worked? :eek:
  5. ciper

    ciper New Member

    Nov 4, 2004
    The maximum is not that simple. You can actually have a 2.2TB single internal drive (if it existed). It's all in the preparation. There are literally more than 5 reasons for the different limits. The tools currently available are not working properly. There are multiple ways to get a single 2TB drive. For example you can structure the drive in a way that stays under the kernel bug, you can create additional space using a single partition rather than pairs OR you can fix the bug in the kernel and use larger than 1TB partitions.

    If I didn't already own two 1TB drives I WOULD have a single 2TB drive inside. Alternatively I have been strongly considering a 160GB A drive and a 2TB B drive internally.

    If you have free time I suggest reading the later pages of this thread http://mfslive.org/forums/viewtopic.php?f=11&t=257&start=60 to truly understand all the limits

    Theoretically even a Series 1 Tivo could function with 2TB of space if you "formatted" the drive properly.
  6. mattack

    mattack Well-Known Member

    Apr 9, 2001
    Please write some documentation about how to make these 'bigger' drives. Heck, getting a full 1.5 TB drive (close to the 'sweet spot' in price nowadays) working on a TivoHD would be a good start.
  7. ciper

    ciper New Member

    Nov 4, 2004
    If you do have a prom mod then check over on DDB for the fixed kernels. They will allow you to create media partitions upto 2TB in size and are available for the S3 and THD among others. upgradesoftware=false becomes important if you follow this method.

    If you have a hacked prom but do not want to use the abnormal sized kernels you can actually create additional device entries using mknod. Tests were done with a tivo using MANY partitions. Check this link http://is.gd/tBwz (link obscured...)

    For a B drive it is easier because you can expand it more than once. Basically you make a 1tb area using WinMFS 9.3e or later which limits the size to just under the kernel bug then expand it again to fill the left over 500gb.

    Here is a method that would allow you to make nearly any size drive and not need a prom mod. It will for sure work (with tweaks) on anything but the THD,,, and it should still work on the THD as well but unproven because the THD has 64 bit MFS (from what everyone can tell it still supports mfs32 just fine)
    http://is.gd/tBtL (link obscured...)

    If you have a THD you can use my THDXL virgin image on it which also shouldnt need a prom mod. Ask around in IRC for "tcd658000-9.4.1-virgin-ciper-tivohdxl.tbk" and I am sure someone will give it to you. It is from a brand new, early in production, never booted THDXL. That image should allow you to have a 2TB A drive without any hacks needed! I say shouldn't because the THDXL had v1.06 of the prom and many early THD had 1.04 IIRC

    I have not even covered all of the methods. Now you can see how there isn't only one right way to do this ;)
  8. ciper

    ciper New Member

    Nov 4, 2004
    I am not responsible if anyone damages their TiVo. Use a multimeter to confirm my pinouts, don't follow my hacking instructions and don't PM me to say I'm reckless.
  9. unitron

    unitron Active Member

    Apr 28, 2006
    semi-coastal NC
    I don't know my having seen that is a good thing or a bad thing, but since one of my S1 SAs is sick anyway, if you're still around I'd love for you to expand on that.
  10. ciper

    ciper New Member

    Nov 4, 2004
    I have had my second drive failure and decided to try something new.
    I will use a 750 Seagate Momentus XT as my A drive with a 1.5TB B drive. There are two reasons for this layout -

    The Momentus XT has 8gb of SSD on board and it automatically places the most used portions of the drive into the SSD. It is OS independent so it should speed up the menus and reordering of season passes.

    The 32 bit limit of 2.12TiB of total disk space means that most people go for two 1tb drives which adds up to only 1.82TiB. With the 750gb+1.5TB the total should be 2.046TiB. I am expecting about 360 HD hours

    edit: I have ran into an issue with the partitioning of the B drive. All of the current tools I am trying are still full of bugs. See here http://www.tivocommunity.com/tivo-vb/showthread.php?p=9372955

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