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Actually I was looking for the interface to Bluetooth device at hardware level - Arduino to be precise. From few sources I gather that at that level and with serial ( TX /RX) I/O it is just a modem communication with the host processor using plain Hayes AT protocol. I suppose SPI interface would work similar - converting to AT commands if necessry. At this point I am not that concerned how the Bluetooth device communicates with another Bluetooth device or how it handles networking between multiple devices. That will come later.

Thanks, very nice doc, easy to navigate. I need to study it in detail. So far I am unclear why single USB device "belongs / need" multiple data / stuff like "human interface", "disk drive " , "volume" etc. I am still not clear when the OS detects valid "plug and pray" USB device , with internal resources already known, why it goes thru all those dialogs. I can see when external resources are needed, but I would expect that the OS would do , at least some stuff, "automatically" and just report " USB device installed , ready to run". Cheers Pf 2016 Addendum I think I just opened can of worms. Example I can plug in my Arduino development port to "direct" USB port,it installs (on XP) without single problem as plug and play.No restart. If I remove it and move it to my D-link port ABSOLUTELY nothing gets reported by XP. Needles to say Arduino IDE no longer recognizes the COMx port as active and the only way to get it back is to uninstall the COMx,and rescan for new hardware. Than XP goes thru clear install and ask for "restart". So far it looks as "chaining" USB - direct PC port , PCI USB interface and or D_link is pretty inconsistent. I just wonder ( rhetorical question only ! ) if newer versions of Windows work better?

Certainly not.

@Jochenn Arndt I was checked your First two options but i didn't checked for last two option , so i'll check and tell you soon. thank you !!!!!!!!

Yep, but there are GUIs that aren't that resource intensive... Xfce, MATE... so you don't necessarily have to give up the GUI to get decent performance out of an old computer. Unity on the other hand... that thing is horrible if you don't have good hardware. I'm not a fan, not a fan at all.

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Thanks, it was a stupid mistake when compiling the application. Now everything works perfectly.

For anyone interested, just marking the partition as active again solved it... came straight back up on a reboot...

Unless you take control of all your users you cannot change it. However you can use the special path format as described in https://msdn.microsoft.com/en-gb/library/windows/desktop/aa365247(v=vs.85).aspx#maxpath[^].

because windows... ??? This world is going to explode due to international politics, SOON.

I had an issue with our file server that served up alot of image files look at kb976618 Use the program RamMap to let you know if your Metadata cache is using up all of your RAM. To fix this issue install Microsoft Windows Dynamic Cache Service

Another short-term fix is to remove the downloaded files from Windows Update. Remove files in c:\Windows\SoftwareDistribution\Download. A more better option is to us dism to clean up updated files. Look at http://www.sevenforums.com/tutorials/122262-windows-7-sp1-disk-cleanup-tool.html[^] to help. But make sure you have kb2852386 installed as it will allow you to clean up outdated files from your winsys. Summary: Used Disk Cleanup Elevated CMD dism /online /cleanup-image /spsuperseded /hidesp

No, it is an issue with Visual Studio, since that generates the warning about some interface from some COM-control. Should I post it in the Visual Studio forum? :) Bastard Programmer from Hell :suss: If you can't read my code, try converting it here[^][](X-Clacks-Overhead: GNU Terry Pratchett)