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Discussion in 'TiVo Roamio DVRs' started by amseven11, Aug 20, 2013.
How would I use that script? Not a normal mac shell script seemingly.
Is there a MBT "mother board temperature" thread someplace? I haven't seen a Roamio in this thread lower than 40C yet, but mine (upgraded to a 3TB WD AV drive) is only 39C.
My Tivos have always stood on edge. They don't fit sideways on that side of my cabinet. Also, instead of putting them on the bottom of the cabinet. I have them on a shelf about 1" from the bottom of the cabinet, allowing a good inflow of cool air from the front of the cabinet.
I can submit a pic if anyone wants.
Ambient room temperature and other factors would likely have more to do with the temperature of your TiVo motherboard than how you have it oriented.
You state that as if you have some authority in the matter and with no evidence whatsoever.
But I still think you're wrong. And my ambient temp is about what others have stated--74F.
74F where the TiVo is situated? I know my temperature can vary 2 to 3 degrees, this time of year, between the ceiling and the floor. So while my wall clock might show a temperature of 75F, the temp where my TiVo is located could be 72F. Or even a bigger difference in the Winter.
Good for you. My "authority" on the matter comes from courses on thermodynamics. By all means though start a thread about your tivo temperature and orientation, for whatever that's worth to your ego.
All things be equal, orientation can make a difference if the temperature sensor is on the left or right side as the area near the "top" side will be warmer than the "bottom" side. Also depending on which side the TiVo is placed on the fan will either be at the top (good) or the bottom (bad).
Personally I worry more about the heat that comes off my audio receiver when running "full steam", as it causes temperature increases in all nearby devices.
That include file is fascinating. So far I've analyzed 500GB & 2TB Roamio full images and a partial 3TB image from a Pro, and they bear little to no resemblance to the Block0 or dpme structures described.
I think your theory that they wrote it and then decided to use the current workaround is correct, but it may also have just been a proposed spec. Eryk Vershen is a media engineer at Apple, not TiVo according to Linkedin.
Absolutely true. However the ambient room temperature, where the device is located (enclosure), air flow in that area, etc, are all going to be bigger contributors to how a thermistor on the motherboard reads temperature-wise then how you position it... at least typically.
I understand that TiVo forum folk are a somewhat introverted and detail oriented crowd but wanting to compare MB temperatures on a device that sits in a shelf all the time is a bit hilarious (to me).
The fact that my simple observation that other things would likely be bigger contributors to a thermistor reading resulted in someone lashing out at my attempt to be an "authority" on the subject demonstrates rather acutely just how bored some of the people on here are.
The "introverted" side of me forces me to respond to this post
My Roamio+ is upgraded to a 3TB WD AV drive and reads exactly 39C almost continuously.
Tivo put their copyright notice in it, alongside Apple's. That means they touched it. Eryk is the original pdisk author. Tivo didn't put who modified pdisk to create pdisk64. They also didn't remove any of Apple's original comments.
Haven't looked at it in detail, but would it explain the difference between the APM in the 4 tuner premieres and the earlier models.
Agreed. I just don't know what relevance it has to Roamios at this point since they're not using those structures yet from what I've seen so far.
The APM (or dpme) structure that I've seen on Roamios is greatly simplified from earlier versions and doesn't fit that definition at all. The Block0 structure in that .h file bears no resemblace to what TiVo has used since day one and still seems to be using. In particular, there's no reference to the current alternating boot partition that has been a part of their strategy forever.
Some parts of it make a lot of sense and are clearly a 64-bit extension of the original file system, and other parts seem like pure fantasy based on the original Apple specification without much actual knowlege of what TiVo has been doing since '99.
I don't know what to think and I won't call it a red herring, but it isn't what they're using so far unlesss an analysis of the Weaknees 4TB model proves me wrong or they switch to it in the future. On stock models up to 3TB I can guarantee that they're not using it now.
Who knows what the future will bring?
Maybe this structure is located on the NAND or SSD that the Roamio boots off of and stores the OS.
I always like to se other people's setups, so please post
Here it is years ago (Jul 2011).
Today it's a lone S5 next to an XBox.
And you can't tell with this angle, but under that black shelf is almost an inch of open space to allow cold air from the front. Out the back, it's closed except for a vent up higher.
Do you notice any vibration suing them vertically? Did you add any rubber feet?
Here is how mine looks, had to pull everything out last night getting ready for my first amp.
How much clearance will you have above the new amp? My B&K puts out a HUGE amount of heat. I'm looking to go back to a straight receiver. I know they get hot too, but nothing like my amp.
4" off top. Its an Emotiva that runs pretty cool, they said 2-3 " so it should be more than good. Also talked to owners that stack without problems. Kinda excited to get my first amp, but as you can see I wont be fitting anything else.
That stand was originally designed as one shelf in each section, but I had to drill new holes to fit the player, surge protector and Hopper in one spot. Luckily the Roamio is so little!