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Hard Drive Upgrade Info

Discussion in 'TiVo Roamio DVRs' started by amseven11, Aug 20, 2013.

  1. Sep 1, 2013 #841 of 3265
    Rkkeller

    Rkkeller Active Member

    1,276
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    May 13, 2004
    My install yesterday went fine after I posted here.

    I think the 1st post in this thread should be updated some as that is what confused me. It was a BIG help, but the wording on one thing could be confusing.

    I only needed a Torx T10 to remove all the screws and the cover should be "pried upward" and off from back to front not "slid forward" like the picture in the first post says. I used a butter knife and wiggled it under and it pops up and off.

    I was trying and trying to "slide" it, then I posted here and someone said to just "pry" it off. It could save others some time.
     
  2. Sep 1, 2013 #842 of 3265
    Rkkeller

    Rkkeller Active Member

    1,276
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    May 13, 2004
    I am very non techie and upgraded the HD so if anyone else is worried, don't be. It is as simple as it sounds.
     
  3. Sep 1, 2013 #843 of 3265
    ggieseke

    ggieseke Active Member

    4,031
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    May 30, 2008
    Thanks to Devx I was able to get a partial 3TB image (all hail!). Here's what I found, and boy do I feel stupid. :eek:

    We've always "known" that the Apple Partition Map uses 32-bit unsigned numbers for the starting offset and the partition length fields. Since those numbers refer to 512 byte sectors, simple logic indicates that you can only describe a 2TB drive.

    But what if the last physical partition had a start address just below the 32-bit maximum value and you use 64-bit math?

    That's exactly what TiVo did. The last MFS media partition starts around the 1.5TB mark and it's just over 1.22TB long. Those figures are true multiples of 1024, not drive manufacturer "terabytes". When it's all said and done, the Apple Block0 and the APM partitions add up to 3,000,592,982,016 bytes, which is exactly the size of a WD30EURS.

    P.S. I see no reason why a 4TB drive wouldn't work.
     
  4. Sep 1, 2013 #844 of 3265
    innocentfreak

    innocentfreak Active Member

    8,950
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    Aug 25, 2001
    Florida
    I wonder if the only way to do it though is to copy the original drive and create the partitions yourself.

    I thought someone tested swapping the drives and the only way it didn't format was if the TSN matched. I may be wrong and misremembering though.
     
  5. Sep 1, 2013 #845 of 3265
    lpwcomp

    lpwcomp Active Member

    8,081
    2
    May 6, 2002
    John's...
    Wouldn't an additional TB push you up against either the partition size limit or the starting byte address limit?
     
  6. Sep 1, 2013 #846 of 3265
    ggieseke

    ggieseke Active Member

    4,031
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    May 30, 2008
    You would have to resize the existing media partitions instead of adding one more like jmfs, but the math says it's possible.
     
  7. Sep 1, 2013 #847 of 3265
    ggieseke

    ggieseke Active Member

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    May 30, 2008
    Each of the two media partitions would have to be just under 2TB instead of roughly 1.5TB and 1.2TB, but it's possible. If the last media partition started at 0xFFFFFFF8 it would work.
     
  8. Sep 1, 2013 #848 of 3265
    Kolenka

    Kolenka New Member

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    Jan 2, 2013
    I wonder if the bug Weaknees hit involved this hack. The Tivo might not partition the 4TB drive correctly. It would need to be partitioned manually in that case.

    Although I wonder why TiVo is still using APM. Seems like a perfect opportunity to move to a more modern partition scheme...
     
  9. Sep 1, 2013 #849 of 3265
    morac

    morac Cat God

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    NJ
    Even if it was, the Roamio would need to recognize it as already being set up or it would simply try to partition it itself and fail, presumably because starting address and partition sizes are hard coded for drives larger than 2 TB. If that's the case the code in flash would need to be changed to work with a drive larger than 3 TB.

    It would be an interesting test to put a 2.5 TB drive in and see if the Roamio a) sets it up correctly and b) uses the same starting address and partition size as it does for a 3 TB drive.

    Likely because it's extra work for little reward. The Roamio Pro can get up to 4 TB with an expander drive (or 5 TB if they ever make 2 TB expanders). That gives a ridiculous amount of recording time. Way more than the average TiVo user needs.
     
  10. Sep 1, 2013 #850 of 3265
    lessd

    lessd Active Member

    7,699
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    Jan 23, 2005
    CT
    I see it being worthwhile to be able to expand from say 1Tb to 2Tb or 3Tb without the loss of settings or programs, but the need to go to 4Tb internally has to be very small and as pointed out you can get to 4Tb with an external drive. BUT a challenge is a challenge.
     
  11. Sep 1, 2013 #851 of 3265
    ggieseke

    ggieseke Active Member

    4,031
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    May 30, 2008
    Yeah, and it makes me wonder if I could do the same thing on a Premiere.
     
  12. Sep 1, 2013 #852 of 3265
    innocentfreak

    innocentfreak Active Member

    8,950
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    Aug 25, 2001
    Florida
    I don't think they ever made a 2.5 TB drive. I couldn't find one on Amazon or Newegg. I wonder if you could test it with a 1.5TB drive.

    It would be nice in the future when the 4TB drives drop the the prices of 3TB and 2TB drives.
     
  13. Sep 1, 2013 #853 of 3265
    morac

    morac Cat God

    8,964
    24
    Mar 14, 2003
    NJ
  14. Sep 1, 2013 #854 of 3265
    Rkkeller

    Rkkeller Active Member

    1,276
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    May 13, 2004
    This thread is getting long, can anyone tell me if you lose your CC paring info if you add a different HD????

    Also does "anything" stay behind if you swap out the HD's????
     
  15. Sep 1, 2013 #855 of 3265
    Rkkeller

    Rkkeller Active Member

    1,276
    3
    May 13, 2004
    What happens if you add a 4TB HD??? Does it just use it like a 3TB or not work at all????
     
  16. Sep 1, 2013 #856 of 3265
    moyekj

    moyekj Well-Known Member

    11,151
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    Jan 23, 2006
    Mission...
    Nothing is saved - it's like starting with a brand new TiVo.

    TiVo won't boot up properly.
     
  17. Sep 1, 2013 #857 of 3265
    bodosom

    bodosom Just another tivotee

    90
    0
    Apr 28, 2002
    Niagara...
    You will lose your pairing each time if e.g. you take out your original drive, put in a new drive and then replace the original drive. Other more subtle drive switching might or might have the same results but I wouldn't be surprised if TiVo reset the pairing state whenever the drive id changed.
     
  18. Sep 1, 2013 #858 of 3265
    bareyb

    bareyb Under Maintenance TCF Club

    25,955
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    Dec 1, 2000
    Silicon Valley
    So I guess if you plan to upgrade the drive the time to do it is when it's still new. I debated getting a Plus and upgrading but I think I'm leaning towards the Pro now. Just for simplicity.
     
  19. Sep 1, 2013 #859 of 3265
    bodosom

    bodosom Just another tivotee

    90
    0
    Apr 28, 2002
    Niagara...
    Well, I'd do it before you load hours of content you want to keep. Card pairing is iffy. I had one take 20 minutes and one take an hour. Given how busy TWC is at the moment it's hard to do it in less than 15 minutes. If that's an issue for you then ...

    Some people like to wait a while (say 90 days) to make sure the TiVo won't have an early out-of-warranty failure. I've just read that buying at Best Buy can help with that.
     
  20. Sep 2, 2013 #860 of 3265
    jodell

    jodell TiVo geek

    136
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    Jul 9, 2002
    Irvine, CA
    While trying to get GGieseke a backup of a 2 TB drive pre-guided setup (which I see Devx beat me to the punch, thanks Devx) I decided to test a second theory.

    I installed a new 2 TB drive into my Roamio and powered it up without the network cable attached. I wanted to test the theory that the flash only contained enough information to connect to the network to download the data and partition the drive.

    The Roamio booted, decided the drive needed to be partitioned (the drive has a serious error and must be repartitioned, all data will be lost (or something to that effect). After a couple reboots, the Roamio was ready to start guided setup.

    I am making a backup now for GGieseke just in case it is helpful.

    Jeff
     

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