After installing dual boot Windows 10 and CentOS7. I cannot see the option for Windows booting.I tried suggestion from this link THIS but I found something different.In my case, I cannot find Windows on it [xhdinh@localhost ~]$ sudo grub2-mkconfig > /dev/null [sudo] password for xhdinh: Generating grub configuration file ...Found linux image: /boot/vmlinuz-3.10.0-514.el7.x86_64Found initrd image: /boot/initramfs-3.10.0-514.el7.x86_64.imgFound linux image: /boot/vmlinuz-0-rescue-89b13d92e70f4ca09e4c4127a3ec37f5Found initrd image: /boot/initramfs-0-rescue-89b13d92e70f4ca09e4c4127a3ec37f5.imgdoneThe lsblk -l[xhdinh@localhost ~]$ lsblk -fNAME    FSTYPE LABEL         UUID                                   MOUNTPOINTsda                                                               sda1  vfat   ESP           C0EE-5982                            sda2                                                            sda3  ntfs   OS            842245042244FD24                     sda4  ntfs   Research      78700D2A700CF0A4                     sda5  ntfs   Entertainment A48E8BD38E8B9C84                     sda6  ntfs   WINRETOOLS    0ACC48ABCC48933D                     sda7  ntfs   Image         6CF24A03F249D24E                     sda8  ntfs   DELLSUPPORT   F8DACC77DACC3422                     sda9                                                            sda10 ext4                 d6e0e44c-ad34-464c-b4ca-333e3d393e54 /sda11 ext4                 f612727f-5662-496f-82fb-5f8cb216ee1f /homesda12 swap                 bbb04bda-9934-4b06-b72a-8b8832be58a0 [SWAP]sdb                                                               sdb1  ntfs                 36D44A09D449CC35                        /run/media/xhdWhen I run [root@localhost ~]# cat /etc/default/grubGRUB_TIMEOUT=5GRUB_DISTRIBUTOR=$(sed 's, release .*$,,g' /etc/system-release)GRUB_DEFAULT=savedGRUB_DISABLE_SUBMENU=trueGRUB_TERMINAL_OUTPUT=consoleGRUB_CMDLINE_LINUX=rhgb quietGRUB_DISABLE_RECOVERY=true
Cannot access to Windows after installing CentOS7
centos;grub2;dual boot