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I have run the Win10 TP all the way from the start up to , but not including 9926, in the Virtual Box and through the updates till now.
I have not beeen able to make the win10 9926 work for a month of trying and with the 2 VM updates either
It has worked just fine in all the other combinations and no troubles. I have no trouble going back to 9879 either and that is fine
As soon as i update the windows from 9879 to 9926 the display size changes to 1600x1200 as the maximum and the size of my monitor is 1920x1080 and has been all along. in 9926 all drivers seem to be there .i have checked and tried anything i could think of to provide the proper drivers and generic ones as well. but as soon as i return to roll back at boot up i get 9879 back in and all is fine again
I have the guest additions updated as well and they all seem to be in order
I do not know what i am doing wrong
If someone else has encountered this i would appreciate some help. I am brand new to Virtual Box and had only minimal experience with windows virtual machine and xp for games a couple of years ago.I did not like it nor need it. so , experience was limited there too. It worked and so does VM virtual box and i am not sure if this is a windows issue or a Virtual box issue combined with my lack of experience
I am using Win 10TP installed on an eSata external hard drive into my windows 7 x64 Professional system though the window10 is based on Windows8.1 iso in the Virtual Box
I have a 990FXA UD3 board with FX8120, hd7950, 16GB 1600 , 128gb SSD , 3 -1TB WD black drives and the external eSata 1TB on which i have the virtual machine based on 400gb partition with Linux mint-Mate17.1 on the other side as a dual boot option. I did put a shared virtual vcd on my "D" drive but can not access it from this virtual machine with 9926. My Linux system is not on any virtual machine.
Not sure if all that stuff makes any difference to the operation of this VM/9926 ,since it was all exactly the same in the prior builds of the tech preview.
thanks ,
John

If I were you I would just download the 9926 build and install that rather than trying to upgrade a previous build. Or wait for the new build which should be out shortly. There is nothing I'm aware of in the 9926 build that would cause the screen size to be incorrect if the guest additions are correctly installed.

loukingjr wrote:If I were you I would just download the 9926 build and install that rather than trying to upgrade a previous build. Or wait for the new build which should be out shortly. There is nothing I'm aware of in the 9926 build that would cause the screen size to be incorrect if the guest additions are correctly installed.

Thanks, that is good advice. I was planning to wait for the next build and try to update. or as you suggest, just starting all over with new everything
I am not experienced enough with the VM virtual box, only been a few months of perfectly great functionality. So, i did not need to do much fiddling around from which I usually learn what not to do(for future reference)
I addedd the guest additions iso as before and it showed up in the windows notification area. even though, now, it is showing guest additions 4.3.18r96516 and I am showing the vm as above.4.3.24. I did just download the most current guest additions as well and installed it along with the updates..
maybe i have found another possible area i goofed up?
thanks for the fast reply anyway
John

the guest additions should match the version of VirtualBox you are using. you don't need to download the GAs seperately. They are part of the VirtualBox package. From the VirtualBox menu>Devices menu choose Insert guest additions CD image or however it's worded. That will mount the .iso and just run them from there.

loukingjr wrote:the guest additions should match the version of VirtualBox you are using. you don't need to download the GAs seperately. They are part of the VirtualBox package. From the VirtualBox menu>Devices menu choose Insert guest additions CD image or however it's worded. That will mount the .iso and just run them from there.

thanks, I do that, also, tried so many other things I cant even remember over a month and a half trying to make 9926 work with the 2 or 3 different virtual box updates i got along the way-as I got notified. No problems at all up to the 9926 monitor/display size issue not showing the 1920x1080 option. I know a few people had display or monitor size issues but not for the same reason i seemed to have. but not showing 1920x1080 was the same among the few others i saw on the windows forum.
thank you for the advice though, it does help.
I am going to go at it again later on here (is still just before dawn in this area)
John

I think I misunderstood something. Was your issue the fact that 1920x1080 wasn't listed in the Windows screen resolution panel? Did you try to switch to full screen and then check?

loukingjr wrote:I think I misunderstood something. Was your issue the fact that 1920x1080 wasn't listed in the Windows screen resolution panel? Did you try to switch to full screen and then check?

you are correct. Every time I went from windows 10 tp build 9879 to 9926 the option to switch to go to 1080 disappeared. however, when i 'roll back' after having tried to fix the guest options which seem to get lost in that transition, I am just fine rolled back to 9879. I also updated the virtual box at least twice over the 6weeks i tried to update builds on the tech preview. i went up from 4.3.18 and whatever was just before that as well as a bigger jump before that.
never changed how windows behaved in any of those Virtual Box updates. but i keep the latest virtual box after the roll back in windows and all is well.
I hope that isnt to convoluted
but the bottom line is that i have not been able to get windows 10 tech preview to have any display or monitor size of 1080x1920 . 1600x1200 is the default size picked and clearly,it is inconvenient to try to work the OS inside that as the top or bottom of the screen is out of sight and all the rest. I figured it was due to the guest additions or something but i cant seem to make it work or show up. the "View" options are greyed out . I am doing something or missing something and it has been so long , Ive gotten more confused as to the way out
thanks

Right click the VM in the GUI. Select "Show Log". Save "VBox.log" to a file. Compress that file and attach it to a message here. Make sure the VM is fully shut down before taking a log.

loukingjr wrote:Right click the VM in the GUI. Select "Show Log". Save "VBox.log" to a file. Compress that file and attach it to a message here. Make sure the VM is fully shut down before taking a log.

do you mean to get a log now, when i am running in windows 10 tp 9879, when it is functioning ok? Or, should i try to update the build in virtual box to 9926-the problematic issue. I do not bother with the 9926 update since windows 10 9879 works so well in the current virtual box even though there seems to be a disparity between the vm build 4.3.25 and the guest additions 4.3.18 ?
thanks for the help though.
john

Well I guess I would just wait. You haven't been using snapshots by any chance?

loukingjr wrote:Well I guess I would just wait. You haven't been using snapshots by any chance?

I disabled snapshots too, because of resource conservation
I am not too bothered by the problem since it works just fine. home group , internet and access to my Network storage is great. I am not a big fan of windows 8 or 10, however I though i could contribute something to the development , not really , but i hoped some of my comments would be taken into consideration, doubtful as it may be.
I thought a new build for the tech preview was due soon enough. I just retried the 9926 build 3days ago and all of the virtual box things seemed to be in place guest additions and all, just that the display options part was not functioning. i tried to re install from with in the 9926 build, drivers for monitors and all were fine , or as they should have been only the build would not display properly with in virtual box. I said i had tried to install that 9926 version at least 6times probably more. I tried different things to make sure i wasnt just repeating the same mistake over each time, htough that is still a possibility.
thanks so far. I may try to do this 9926 update one more time later on. It takes 45mins or more to get it all sorted out as it is managed through the windows 'wizard' installer routine. I tried to clear out my registry to see if there were some things the installer was doing wrong and luckily did not mess anything up . I am a novice at this but tried whatever i could with out success
thanks again,

I just do a clean install when a new build comes out. I've never added any drivers other than what comes in the guest additions and mine always works fine.

not sure what you mean by disabling the snapshots. I just don't use them.

loukingjr wrote:I just do a clean install when a new build comes out. I've never added any drivers other than what comes in the guest additions and mine always works fine.

not sure what you mean by disabling the snapshots. I just don't use them.

very sound advice. i am so new to the virtual box Oracle VM, which is great, Ive found, that i didnt think to do that clean install. I guess i was too afraid i would have forgotten how i made it work the first time, i just waited for the notification of latest update and let it happen via update process or wizard thing.
As far as snapshots go, I got it confused with the video capture which i turned off or did not enable more accurately
I didnt even know the snap shot icon meant snapshot till now. I do not do well with all the icon representation still. am even worse with the icons or emoticons as they have come to be known-animated smiley faces end their offspring ,good i suppose for giving a hint toward tone of a statement, but i have not grown to understand them yet,
live and learn, i know, now that the snap shot icon is not connected to the 'video capture' as i had previously guessed
thanks again
I shall do the clean install next go round and will have to live with windows 10 tech preview 9879 till next build update there too. no big problem since all is working though was/am curious as to the additions of features or alteration of features that happened in the 9926 build. I do not use the VM virtual box more because I build my own computers for myself and family so have lots of spare parts, or did have lots of them , so been putting the experimental try outs and other OS trials in a box i put together . i heard about Linux Mint this past August so, tied up a laptop and 2 spare machines trying out the various environments of mate, cinnamon, ubuntu, mint etc, etc.
so , when the tech preview hit, i thought it might be a good time to try to learn how to use the virtual machine more extensively than i had with windows 7 pro/ultimate and the vm for XP .
thanks for your attention to my question. i have gotten a bunch of good ideas and suggestions from you
John

loukingjr wrote:I just do a clean install when a new build comes out. I've never added any drivers other than what comes in the guest additions and mine always works fine.

not sure what you mean by disabling the snapshots. I just don't use them.

I just got the latest VMbox small update and got the guest additions to match the rest and now, for the first time after at least 2 months, I am able to get the windows 10 tech preview 9926 to function as it should and had done in the other windows build updates.
I just wanted to post to thank you for the advice. I am not exactly sure which bit did it but i think the clean install and having the guest additions and update be matching. somehow, i messed it up, i do now know how, or if that is something i did improperly, or something i did not do when I should have.
whatever , it (windows 10 ) is now viewable as 1080 and auto resizes in full-screen- where before that function was dim only after trying to update windows build.
thanks again
John

YVW John. Glad it's working.