Panasonic DMR-BWT735 Hard drive

Brian566

Member
Hi all
I am completely gutted my Panasonic Blue ray Hard drive recorder is starting to pack up Model DMR-BWT735 keeps not reconsigning hard drive But my main issue is i I have four external hard drives all full of films

If the units hard drive finally pack in i realize i would lose all my recordings but i dont want to loose all the external drives content

Is there any way can transfer the films on these external usb drive to another machine What worries me is even if i buy another Panasonic the USB drives wont play as the instructions say these are matched to the original Machines hard drive

One way i could try is to transfer the films content to DVD but i dont think this will be possible with HD due to DVD disc space

Any ideas before it pack in
 

k-spin

Active Member
You can burn HD recordings to Blu-ray discs (BD-R / BD-RE) using the DMR-BWT735. You could then rip those Blu-rays to a PC to store on HDDs if you wanted.
 

k-spin

Active Member
Somebody was looking into solving the issue with external HDDs only working with the original machine. Not sure how far they got:
 

k-spin

Active Member
You can burn HD recordings to Blu-ray discs (BD-R / BD-RE) using the DMR-BWT735. You could then rip those Blu-rays to a PC to store on HDDs if you wanted.
Oh, and, as long as the recordings are not copied protected, I believe you can load them into another Panasonic Blu-ray recorder from the BD-Rs/BD-REs if you get a replacement for your DMR-BWT735.
 

jonoro

Active Member
Sadly no further, I had to press on spare unit into service so now only have one to experiment on.
We know there is a "tying together" of the HDD, the unit and all ext HDDs.
The unit stores its part of this data in both the processor pcb and in the EEPROM on the power pcb.
The int HDD has data related to this in the reserved area accessed via negative cylinder numbers.
The big question for you is if you change the int HDD will the ext HDDs still work?
I don't know, but would be very interested to know. I think theremis a better than evens chance they will work, but a gamble.
 

Brian566

Member
Thanks All for quick reply

I was leaning towards a Sony But if i can rescue my content from the External hard drives may stick with Panasonic
 

jonoro

Active Member
I should have investigated this aspect before.
Still I only need one machine to investigate, so I can have a go if you want.
I know there is data stored in the EEPROM when a USB HDD is registered, so hopefully that is the only place. In this case you could replace the int HDD and all your USB HDDs would still work ok and the recordings be safe.
I can fire up my spare 720, register a USB HDD make a recording on it, then swap the int HDD and see if it will play the USB HDD recording.
I don't want to waste my time if it would not help you, so please let me know.
I don't have a 735 but it is almost the same as a 720 so the test should be valid.
 

Brian566

Member
That would be good If its not to much trouble
there is a thread on hear about changing hard drive and if it finally packs in i have nothing to loose

As i said dont want to loose everything off the external drives
 

jonoro

Active Member
Just made it, 50 minutes to go!
Good news, yes it works.
You can swap the int HDD and recordings on USB HDD remain and can be played.

For the record:
I took a 720, made a couple of recordings, one in SD other HD, both recordings being in DR mode.
I then connected a USB HDD and went through the registration process.
I made a further recording.
Next I copied these 3 recordings to the USB HDD (In fact although it's called copy it actually moves the recording to the USB HDD)
I then told the 720 I wanted to disconnect the USB HDD, then disconnected it.
I switched the 720 off and after it shut down I unplugged it.
Swapped the int HDD for an unused (in the 720) one and plugged it back in and went into HDD management and formatted it.
I then powered up the USB HDD and then plugged it into the 720
The recordings I made were all there and played perfectly.
I made a new recording and copied/alla moved it to the USB one and that was all OK and all recordings on the USB HDD would play OK.
Finally, I told the 720 to disconnect the USB HDD, I unplugged it, powered down the 720, u-nlpugged it from the mains.
Replaced the original int HDD, powered the 720 up, formatted the int HDD. Powered the 720 down, unplugged it, connected the already powered USB HDD, re-plugged the 720, powered it up and all the USB HDD recordings were still there and played OK.

Whether all the powering up, down and disconnecting is necessary I don't know. I do know the 720 can complain if you unplug a USB HDD without having told it to disconnect it first.

My conclusion is that yes you can safely (on a 720 and I can't see a 735 being any different) replace the int HDD and recordings on USB HDD are preserved.
Please do note though that you will loose recordings on the int HDD due to the required format of the HDD.
I hope this helps. (Replacing the int HDD is easy and it doesn't have to be the same model or even make.
 

jonoro

Active Member
Brian
I went out of my way to try and help you.
I unboxed my spare unit, registered a usb hdd, made recordings, swapped the int hdd and checked the usb recordings. I then had to reinstate everything.
I posted the results here for you.
You however can't be bothered to provide feedback and help the knowledge pool.
It is people like you who make me ask why I bother.
 

Brian566

Member
Hi Mate
Im so sorry I have in and out of Hospital and just realized my my settings were not on auto reply

Sorry to put you out but your information is well received now nearly recovered will get back onto the project
 

Brian566

Member
its for my daughter she has now bought a new unit so i can play around with the old unit so will change the Hard drive and then do what you have done and it should be OK
Again sorry
 

jonoro

Active Member
Very sorry to hear that you have been poorly, I wish you a speedy recovery.
I apologise for the tone of my comment, a bad day, but that is no excuse.
Thank you for the feedback.
 

Brian566

Member
No problems no offence taken we all have those days
But your test is much appreciated now i know it works can go ahead as its now a spare unit
 

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