RHEL7 USB installation problem and solving

Encountered quite a few problems while install the RHEL7, with the Windows system already installed.

Problem 1:/dev/root does not exist

Downloaded the Redhat 7 ISO file and generate the bootable USB drive by using software 'rufus-1.4.9.exe'. 

in the installation menu, press tab key, and enter to modify the install command, change the “hd:……“ to "hd:/dev/sdb#", and then press enter, problem solved.

Problem 2: cannot boot both system

modified the /boot/grub/grub.conf (for RHEL6), changed the (hd1,0) to (hd0,0), it is starting from 0, the value 1 comes from the USB drive bootable drive.

Problem 3, how to change the sequence on the in Grub of RHEL6

change the default from 0 to 1 in /boot/grub/grub.conf, 0 will be the linux at defalt, 1 will be windows be default.

Problem 4: only boot into RHEL7, cannot see the dual boot interface in Grub2.

Create the file and add the following

    /etc/grub.d/10_windows7     #! /bin/bash     echo "Adding Windows7 entry to grub"     cat << EOF     menuentry "Windows" {     set root=hd0(0,1)     chainloader +1      }     EOF

Adjust hd0(0,1) accordingly. You can use hd0(0,1) if windows is installed on /dev/sda1

2. chmod +x /etc/grub.d/10_windows7

3. grub2-mkconfig -o /boot/grub2/grub.cfg

Problem 5, change the boot priority in Grub2 of RHEL7

change the name of /etc/grub.d/10_windows7 to 09_windows7, 09 has lower number as linux file (in my Linux system it's 10_linux, change to 09 is smaller than 10), has higher priority.

then execute 'grub2-mkconfig -o /boot/grub2/grub.cfg', reboot, the system will default as Windows to boot.

bbs.tianya.cn/post-110900-1-1.shtml
bbs.tianya.cn/post-110900-15-1.shtml
bbs.tianya.cn/post-110900-18-1.shtml
bbs.tianya.cn/post-110900-2-1.shtml
bbs.tianya.cn/post-110900-20-1.shtml
bbs.tianya.cn/post-110900-21-1.shtml
bbs.tianya.cn/post-110900-22-1.shtml
bbs.tianya.cn/post-110900-23-1.shtml
bbs.tianya.cn/post-110900-24-1.shtml
bbs.tianya.cn/post-110900-26-1.shtml
bbs.tianya.cn/post-110900-28-1.shtml
bbs.tianya.cn/post-110900-29-1.shtml
bbs.tianya.cn/post-110900-3-1.shtml
bbs.tianya.cn/post-110900-30-1.shtml
bbs.tianya.cn/post-110900-31-1.shtml
bbs.tianya.cn/post-110900-32-1.shtml
bbs.tianya.cn/post-110900-33-1.shtml
bbs.tianya.cn/post-110900-34-1.shtml
bbs.tianya.cn/post-110900-35-1.shtml
bbs.tianya.cn/post-110900-37-1.shtml
bbs.tianya.cn/post-110900-4-1.shtml
bbs.tianya.cn/post-110900-42-1.shtml
bbs.tianya.cn/post-110900-45-1.shtml
bbs.tianya.cn/post-110900-48-1.shtml
bbs.tianya.cn/post-110900-50-1.shtml
bbs.tianya.cn/post-110900-53-1.shtml
bbs.tianya.cn/post-110900-56-1.shtml
bbs.tianya.cn/post-110900-59-1.shtml
bbs.tianya.cn/post-110900-61-1.shtml
bbs.tianya.cn/post-110900-66-1.shtml
bbs.tianya.cn/post-110900-67-1.shtml
bbs.tianya.cn/post-110900-68-1.shtml
bbs.tianya.cn/post-110900-69-1.shtml
bbs.tianya.cn/post-110900-7-1.shtml
bbs.tianya.cn/post-110900-70-1.shtml
bbs.tianya.cn/post-110900-71-1.shtml
bbs.tianya.cn/post-110900-72-1.shtml
bbs.tianya.cn/post-110900-73-1.shtml
bbs.tianya.cn/post-110900-74-1.shtml
bbs.tianya.cn/post-110900-75-1.shtml
bbs.tianya.cn/post-110900-76-1.shtml
bbs.tianya.cn/post-110900-77-1.shtml
bbs.tianya.cn/post-110900-78-1.shtml
bbs.tianya.cn/post-110900-79-1.shtml
bbs.tianya.cn/post-110900-80-1.shtml
bbs.tianya.cn/post-110900-82-1.shtml
bbs.tianya.cn/post-110900-83-1.shtml
bbs.tianya.cn/post-110900-84-1.shtml
bbs.tianya.cn/post-110900-86-1.shtml
bbs.tianya.cn/post-110900-88-1.shtml
bbs.tianya.cn/post-110900-89-1.shtml
bbs.tianya.cn/post-110900-90-1.shtml
bbs.tianya.cn/post-110900-91-1.shtml
bbs.tianya.cn/post-110900-92-1.shtml
bbs.tianya.cn/post-110900-93-1.shtml
bbs.tianya.cn/post-110900-94-1.shtml
bbs.tianya.cn/post-110900-95-1.shtml