Due to business needs, the need to re-integrate the cabinet, before shutting down I have used the command TUNE2FS to set the hard drive to cancel self-test, but the system at startup or prompted to check the /dev/sdb1 hard disk has been stuck here, Had to call the staff of the room to help solve, into the fast start mode in fact, and single-user almost, just the instructions are not the same, input instructions fastboot can enter, edit the configuration file /etc/fstab
/dev/sdb 1 /backup ext3 defaults 1 2
Switch
/dev/sdb 1 /backup ext3 defaults 1 0
this is do not self-test the hard disk , restart the system again, the problem solved.
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Troubleshooting Hard drive self-test