Redhat 6.5 System Grub Repair whole process

Redhat6.5 after each boot, the following interface appears

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1 . use the optical drive as the first boot device, select the third entry, enter Rescue Mode

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2 . system default, click OK

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3 . system default, click OK

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4. do not open the network interface, select no

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5. system default, select Continue

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6. Select the first shell Start Shell

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7. Click OKto enter shell mode

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8. Create a folder, such as temp

Bash-4.1#mkdir/temp

9. mount the disc image to the /temp directory

Bash-4.1#mount–t iso9660/dev/sr0/temp

Enter the /temp/packages/ directory and install the Grub Package for system repair

bash-4.1#cd/temp/packages/

Bash-4.1#rpm–ivh–root/mnt/sysimage Grub-0.97-83.el6.x86_64.rpm–force

One . after a reboot after installation, an error message appears:unable toresolve ' Uuid=86e44823-e048-4581-90d0-42899326beae '

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Enter Rescue mode again to see the /dev/sda1 's UUID number

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13./dev/sda1 get a new UUID number

Bash-4.1#tune2fs-u random/dev/sda1

View /dev/sda1 the newly generated UUID number, and record it down

bash-4.1# tune2fs–l/dev/sda1 | grep UUID

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Edit /etc/fstabTo change the original uuid to the newly generated uuid number

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After restarting, the Grub> interface appears directly , enter

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Root (hd0,0)

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Kernel/vmlinuz-2.6.32-431.el6.x86_64root=/dev/mapper/volgroup-lv_root

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Initrd/initramfs-2.6.32-431.el6.x86_64

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Boot Enter Start

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The system is fully functional, but the Grub interface appears on startup

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Edit /etc/grub.conf, add two lines of code marked with a red box

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system starts normally

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This article from "Dosom" blog, declined reprint!

Redhat 6.5 System Grub Repair whole process