I have been using DVD-r for 3 years now and have always understood that this medium is for one-only recording.
However, just to experiment, I tried erasing a DVD-r with about 20 minutes worth of material recorded on it. The disc came up completely blank, with a full 2hrs of time in SP mode. I have done this many times since, and discover I can erase up to around 30 minutes and salvage the entire disc. I use stand-alone Panasonic DMR E-30 for recording. This will not work with a computer DVD writer.
Just wanted to share that with others who have been frustrated by botched recording and have thrown away discs that may have been re-usable. Has anybody else run across this?
Help, my PC with Windows 10 won't shut down properly
Since upgrading to Windows 10 my computer won't shut down properly. I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The only way to get it to shut down is to hold the physical power button down till it shuts down. Any suggestions?