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"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

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.