Good day.
There is a laptop ACER Pentium quad quite new (CPU N3540 bought a year and a half ago). It was Windows-8 after the purchase, it upgraded to Windows-10-64 Home Edition. Now I need to install Linux in parallel with Windows. But so that Windows does not fly away (a). Once upon a time I worked with different double download managers. But that experience was sharply negative. The operating systems went off, the managers hung up and even messed up the disk and it was impossible to work at all. Tell me how it is now on this front. What are the good and workable managers double downloads? For some reason, there is no way to indicate in the laptop BIOS that there are several operating systems on the laptop. Although talk about the fact that the managers of dual downloads will be built into the BIOS, I heard.
Thank.