6TB Premiere

Discussion in 'TiVo Upgrade Center' started by jmbach, Jul 26, 2015.

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  1. jmbach

    jmbach der Neuerer

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    Edit: See post 2 for instructions on how to create a 6TB Premiere image. It is now relatively straight forward.

    A 6TB Premiere is possible to create but it is not all easy. The biggest obstacles are converting the TiVo APM all to 64bit entries and a manual coalesce. This will not work on a Roamio as TiVo changed how many partitions can exist on the main drive. Anything over 14 partitions causes a reformat of the drive. This is current as of 20.4.7a.

    To create the 6TB image use MFSTools 3.2. The basic steps are as follows:

    1) Use MFSTools 3.2 to copy your current image to a 6TB but limit the image size creation to 4TB. The current MFSTools cannot handle an image that has had either partition 10 and/or 12 coalesced previously. There is a mod that is being tested and seems to work if only partition 12 had been coalesced.

    2) Use MFSTools 3.2 to add a pair of partitions to the newly created image.

    3) Convert all APM entries except for the first one to 64bit entries.

    4) Coalesce the last pair of partitions (15 and 16 into 15)

    5) Modify each entry in the APM to reflect 15 total partitions.

    6) Put it in your Premiere and let it boot and divorce.

    You then should have a 6TB Premiere and if you used the appropriate switches in the first step, still have all recordings.

    Our current coalescing tools only work on 32bit APMs so these tools will need to be either modified or new tools will need to made. Will also need to have a tool that will convert an APM from 32bit to 64bit.

    I'll try getting a write up together with more details but hopefully someone will help develop those tools to make this process easier and much less prone to errors.

    [​IMG]
     
    Last edited: Jun 23, 2016
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  2. jmbach

    jmbach der Neuerer

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    After finally getting the time to create the necessary tool to convert the APM to 64 bit and then coalesce the added partition pair MFSTools 3.2 creates, we now have the instructions on how to create a 6TB premiere.

    1. Download MFSTools 3.2 from this post in the format you want to use. Follow the instructions there to logon to root when you boot the image.

    2. Boot the MFSTools image with the original and a 6TB drive connected.

    3. Verify the correct drive labels using the command "fdisk -l" (Lower case L)

    4 Run the command "mfstool copy -aiM 4000 /dev/sdX /dev/sdY" where sdX is your source drive and sdY is your target (6TB) drive. This command will copy all recordings and can take several days to complete if you are dealing with a large drive already. If you do not want the recordings drop the "a" in the command. Without the recordings it will take 10 to 20 minutes to complete. Might want to do this for a test run to make sure you got the process down correct.

    5. Once that is complete I would boot the drive in the TiVo to make sure that the last step was successful. You should have about 4TB of recording space at this time.

    6. Reconnect the 6TB drive to the computer and boot the MFSTools image.

    7. Verify the correct label for the drive with "fdisk -l"

    8. Run the command "mfstool add -x /dev/sdZ" where sdZ is the 6TB drive.

    9. Next run the command "apmfix /dev/sdZ" where sdZ is the 6TB drive. If it completes successfully, it will let you know that the APM was converted to 64 bit and that partition 15 and 16 were successfully coalesced.

    10. Place the drive in the TiVo and let it boot. It will ask you if you want to divorce the external drive. Go ahead and follow the directions to divorce the external drive. Once the drive is divorced, you will have a 6TB Premiere. :)
     
    Last edited: May 29, 2016
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  3. TiVoTJung

    TiVoTJung New Member

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    did you get this to work? you have a working 6tb image?
     
  4. jmbach

    jmbach der Neuerer

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    I did. I edited the OP to include a picture of the result.
     
  5. TiVoTJung

    TiVoTJung New Member

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    dam thats a lotta hours:up:
     
  6. Cybernut

    Cybernut Member

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    Awesome, jmbach!! Kudos to you for pulling this off. A future project for me in a few months :)

    Thanks for continuing your work with Premieres and also your generous time and help you've provided to me and others.
     
    Last edited: Jul 30, 2015
  7. x60hz

    x60hz New Member

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    Thank you JMBach for your hard work here.

    I know you said you would come up with more details on this but I can't wait to try it. I saw Weaknees had a 6tb update so I went out and paid $250 for a 6tb WD drive thinking this would be just as easy as when I went from 320GB to 2TB. Could you just elaborate a bit on steps 3 & 4? Does MFSTools give you an option to convert APM entries? And what is meant when you say "coalesce the last pair of partitions". Lastly, what exactly is to be done when you say let the drive divorce?
     
  8. jmbach

    jmbach der Neuerer

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    The hardest part of the process to explain is coalescing partition 15 and 16. When I get that done, I will post the whole process. However, if you want to do the first step of the process, copy your current image to the 6TB drive with MFSTools 3.2 with the command "mfstool copy -aiM 4000 /dev/sdX /dev/sdY" where sdX is your source drive and sdY is your 6TB drive. Then let the TiVo boot the 6TB drive. In fact you can let it use the drive until I get the final instructions completed to expand the image.


    Sent from my iPad using Tapatalk
     
  9. x60hz

    x60hz New Member

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    Jan 20, 2009
    Very Cool. Thank you again so much. I think we all here owe you a drink or something!!!
     
  10. x60hz

    x60hz New Member

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    Jan 20, 2009
    Hey JM, just wondering how you were making out with the image expansion directions. Funny how fast a TiVo hard drive can fill up LoL!!
     
  11. jmbach

    jmbach der Neuerer

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    Slowly right now. My development computer went down an am in process of replacing it and not enough free time due to other obligations.
     
  12. Soapm

    Soapm Active Member

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    Other obligations??? I can beat the kids for you? That should free you up some time... ROFL...
     
  13. yoheidiho

    yoheidiho Member

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    Mar 31, 2011
    JMBach - did you every get the final instructions completed to expand the image from 4TB to 6TB?

    I'm looking to expand a 2TB Premiere that I expanded and supersized back in the day with JMFS and a 500GB Premiere 4.

    I am a total Linux newbie and would like to upgrade both units to 6TB but am hesitant if the 4TB to 6TB expansion is daunting.
     
  14. jmbach

    jmbach der Neuerer

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    Should not be daunting when the auxiliary programs are finished. It will essentially be 3 commands to get the task done.
     
  15. yoheidiho

    yoheidiho Member

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    Mar 31, 2011
    I'm getting buffer I/O errors which cause MFSTools to fail copying the 2TB Premiere drive which was expanded and supersized with JMFS. Can this be do to JMFS? I'm not sure how to proceed.
     
  16. jmbach

    jmbach der Neuerer

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    I have use MFSTools 3.2 with drives that has been expanded multiple times with JMFS. I had a similar problem with one computer I used doing the process inside a virtual machine using two different Docks. For that computer I copied the source drive to a VHD image on the computer and then used the virtual machine to do the job.

    How are you doing the copy process.
     
  17. yoheidiho

    yoheidiho Member

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    Mar 31, 2011
    I am using the Live iso with direct sata3 connection to the motherboard. I've tried reversing sata connections but that doesn't help. I'm not using a dock or USB connection. I'm wondering if I should try a different computer with a sata1 connection.
     
  18. yoheidiho

    yoheidiho Member

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    I swapped computers and am trying again. I'm going to see if an Intel machine will accomplish what the AMD machine couldn't. Who knows, I'm hoping that it was a driver issue.
     
  19. yoheidiho

    yoheidiho Member

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    Mar 31, 2011
    My issue is the source drive, not MFSTools. Ran KS 54 and got Fail 7 for short, conveyance and extended tests. The off-line scan is in progress.

    I still want to, need to, upgrade to the 6TB drive with a 4TB image. I'm unsure of the best approach utilizing a clean image and migrating to retain recorded programs. Any advise?

    Or would it be best to transfer my season passes to a second Premiere followed by the recordings? This sounds cumbersome and time consuming.
     
  20. jmbach

    jmbach der Neuerer

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    Well, the only other thing I can think of is to use ddrescue or a similar program to copy the image to a good drive and then use MFSTools 3.2 to copy to the 6TB drive.
     

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