I want to install Windows 10 on my laptop with Debian Jessie on it. I installed my Debian in EFI mode with graphical options. Could someone point me to a good tutorial, what I have to set, what to check, in order not to lose anything on my current installation of Debian, and at the end how to set GRUB with everything working without a problem and seamlessly with each other? I have at least 400 GB unused on my disk.
Dysk /dev/sda: 931,5 GiB, bajtów: 1000204886016, sektorów: 1953525168
Jednostki: sektorów, czyli 1 * 512 = 512 bajtów
Rozmiar sektora (logiczny/fizyczny) w bajtach: 512 / 4096
Rozmiar we/wy (minimalny/optymalny) w bajtach: 4096 / 4096
Typ etykiety dysku: gpt
Device Start End Sectors Size Type
/dev/sda1 2048 195311615 195309568 93,1G Linux filesystem
/dev/sda2 195311616 1171873791 976562176 465,7G Linux filesystem
/dev/sda3 1171873792 1187497983 15624192 7,5G Linux swap
/dev/sda4 1187497984 1207029759 19531776 9,3G EFI System