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Dvr Backup And Restore Software for Windows (DvrBARS)

Discussion in 'TiVo Upgrade Center' started by ggieseke, Apr 13, 2013.

  1. Apr 17, 2013 #61 of 1474
    ggieseke

    ggieseke Active Member

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    Just to clarify (ignore this if tech bores you), Full reads every byte from alpha to omega in 2MB chunks. If it happens to stumble across a chunk that's all zeroes it makes a 4 byte note in the header and moves on. That's all. It will happily backup a garbage drive, a Windows drive, or anything else. Think dd with some compression.

    Modified and Truncated backups depend on my ability to read all of the the Ext2 and MFS partitions, then decide which sectors to back up and which ones to ignore.

    A Full backup of a "dirty" drive will probably be bigger than the source. If you delete all your recordings or even run C&DE it won't help.

    On the other hand, the drives that TiVo's using right now come from the factory with all zeroes and they only overwrite parts of it or their build process gives the same result. Either way you get giant chunks of naughts that result in a small image.

    End of the Mythbusters "science" lecture. :rolleyes:
     
  2. Apr 19, 2013 #62 of 1474
    johndierks

    johndierks New Member

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    I backed up my original drive using DvrBARS, (160gb drive from Tivo HD) and then restored the image to a 2TB WD20EARX. I'd like to expand now using WinMFS, but WinMFS doesn't see my drive when loaded. Thoughts?
     
  3. Apr 19, 2013 #63 of 1474
    ThAbtO

    ThAbtO TiVoholic by the bay

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    You could have used WinMFS for the entire process. Make sure you are using administrative access.
     
  4. Apr 19, 2013 #64 of 1474
    jmbach

    jmbach der Neuerer

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    I agree with ThAbtO. If WinMFS is not seeing the drive it usually means it needs administrator privileges. You should be able to expand the drive after DvrBARS restored the backup to the larger drive.
     
  5. Apr 20, 2013 #65 of 1474
    lessd

    lessd Active Member

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    I just did that and WinMFS does see the drive but will not expand it for the full 2Tb, you can do the job by running jmfs to just expand the drive, do not supersize the drive with jmfs. You then can super size the drive using WinMFS. This just worked for me.
     
  6. Apr 20, 2013 #66 of 1474
    jmbach

    jmbach der Neuerer

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    How large did WinMFS expand the drive.
     
  7. Apr 20, 2013 #67 of 1474
    lessd

    lessd Active Member

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    I did not use WinMFS to expand as it told me that 1Tb was the biggest drive that a TiVo-HD could take, I used jmfs to just expand than went back to WinMFS and used the super size on that program, worked great for a 2Tb TiVo-HD at 318 hours of HD record time. I did not try to first use WinMFS to super size than use jmfs to expand, as I said before do not use jmfs to super size a TiVo-HD.
     
  8. Apr 20, 2013 #68 of 1474
    jmbach

    jmbach der Neuerer

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    Yes that is the standard disclaimer WinMFS gives you. It will then ask you if you want to expansion limited to 1TB. Just say no and it will expand to the full 2Tb.
     
  9. Apr 20, 2013 #69 of 1474
    lessd

    lessd Active Member

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    I did that and it did not work, at least for me, so I used the multi step process and that worked.
     
  10. Apr 20, 2013 #70 of 1474
    jmbach

    jmbach der Neuerer

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    Are you talking about using WinMFS to do the whole process where you have to say no to expand after copy then use MFSAdd to expand and then supersize. Or are you talking about the multi step process where you used DvrBARS to restore to a larger drive and then JMFS to expand and WinMFS to supersize.
     
  11. Apr 20, 2013 #71 of 1474
    lessd

    lessd Active Member

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    Multi step process, you can use DvrBARS or WinMFS to restore to the 2Tb drive, if using WinMFS don't expand, than use JMFS to expand, than WinMFS to supersize. This works, but you may be able to restore and supersize first using WinMFS, than expand using JMFS, I did not try doing that way.
     
  12. Apr 20, 2013 #72 of 1474
    nooneuknow

    nooneuknow TiVo User Since 2007

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    Cox Cable...
    Perhaps part of the challenge of the project could be to determine what areas of a never-booted "virgin" drive can be once again returned to zeros on a non-virgin drive, thus reducing the final size of a truncated & compressed backup? It would also be nice to know that the databases are fully wiped, if possible, which could also eliminate the need for a C&DE between different TiVos. I had followed some advice to boot the original drives, in order to keep cable-card pairing, only to have Cox roll out an update that somehow can tell if you swapped in a cloned drive, requiring a re-pair anyway. There's also a limited amount of time the pairing information remains valid, which kills the pairing just by leaving a TiVo unplugged for too long.

    Has anybody found the location of the pairing data on the drive? That's a project I'd been thinking could lead to a backup of just that data, but Cox seems to have killed any reason for me to do that. Next comes SDV, which I've heard creates it's own problems and challenges. I'm not looking forward to it, but they've used up their whole 1GHz spectrum with insane internet speed. We get a "free" speed double every year, and then 6 months after, they increase the cost, and somehow rig it where downgrading loses some invisible discount so the cost stays the same, but the speed is slower...

    Oops, got a bit off the rails there... Sorry. I still get mad every time Cox claims "Our HD is FREE", when it takes three paid services to get that "free" HD...

    So, I guess, I can reel this back in, going back to the matter of zeroing out the right places. For instance, whatever video started recording once the non-virgin Tivo completed setup, etc. Is Comer still active, or is has he retired after JMFS 1.04? He knew a bit about what didn't need to be included in a truncated backup, but that post was long ago, in another thread that I already cluttered up enough for now.
     
  13. Apr 20, 2013 #73 of 1474
    jmbach

    jmbach der Neuerer

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    What model S3 do you have? Not sure why WinMFS could not do the whole expand and supersize. What type of backup and restore did you use with DvrBARS and I will try to replicate.
     
  14. Apr 20, 2013 #74 of 1474
    nooneuknow

    nooneuknow TiVo User Since 2007

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    I'm curious as to what led to the concept of this. I suggested adapting jmfs to backup to a virtual drive, and/or run in a virtual machine when Comer released it. This tool is either proof that it wasn't impossible, or something changed, allowing it to be possible. I'm just happy to see that anybody is actually innovating tools to help unbrick or upgrade TiVo. I was beginning lose hope. So :up: :up: :up:
     
  15. Apr 20, 2013 #75 of 1474
    ggieseke

    ggieseke Active Member

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    Back in November I was virtualizing some servers at work, stumbled across yet another "you can't backup a Premiere" post and got curious. I cooked up a POS command-line app that would only run on Windows 7 and suckered retiredqwest into trying it. When he got something that would easily fit on a DVD or flash drive the obsession kicked in and almost 1000 hours of programming later...

    Next time I get curious I may try beer instead, but thanks.
     
  16. Apr 20, 2013 #76 of 1474
    ggieseke

    ggieseke Active Member

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    In Modified Full or Truncated mode it only backs up the parts of the drive that are actually in use. I may be able to squeeze a bit more compression out of a zipped image by taking that process down to the sector level instead of just marking 2MB blocks for inclusion in the backup, but probably not much.
     
  17. Apr 20, 2013 #77 of 1474
    nooneuknow

    nooneuknow TiVo User Since 2007

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    Cox Cable...
    If it makes you feel any better, I spent about the same amount of time using a raw viewer on bricked GSOD looping TiVo drives, trying to find what was where, and what was breaking. I gave up when I came across "Swedish chef" over and over again. I decided to write it off as the Swedish Chef was borking my TiVos, and I'd have as much luck fixing it as the coyote catching the roadrunner. I then had a computer drive failure, which was the one where I'd documented all my work. So, yeah, sometimes beer seems much better.

    I did, possibly, randomly, find something that has the TiVos up for a record amount of time - clear and delete the guide data every three months, with a KS52 on the reboot. Seriously, I'm actually expecting a mechanical drive failure, as opposed to a drive that tests fine and only works again when re-imaged. Now I have jinxed the experiment, and I'm sure I'll be swapping in a spare TiVo by tomorrow... :rolleyes:
     
  18. Apr 20, 2013 #78 of 1474
    nooneuknow

    nooneuknow TiVo User Since 2007

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    Cox Cable...
    It was just a thought. I'm of the mindset of "if it ain't broken, fix it til it is" on some occasions. With TiVo, though, it's been more like "if it ain't broken, you forgot to plug it in and use it".

    Best of luck.
     
  19. Apr 21, 2013 #79 of 1474
    lessd

    lessd Active Member

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    This was done from a 652 TiVo-HD and an original 160Tb drive. WinMFS can't do 2Tb drives in my experience, yours may be different.
     
  20. Apr 21, 2013 #80 of 1474
    HerronScott

    HerronScott Well-Known Member

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    Several people have had success using WinMFS with 2TB drives as long as the TiVo software was already upgraded to the latest software including on the original S3 OLED. I hope to try taking my current S3 OLED from 1TB to 2TB in the future at some point.

    Scott
     

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