The forgotten root password of the CentOS system startup failure

Cause of failure

Forgotten Root User's password

Solution Idea-Method one

Boot into single user mode, reset password

650) this.width=650; "Src=" Http://s1.51cto.com/wyfs02/M00/8A/F7/wKiom1g_zU3S1QUkAACO5pJF_q4936.jpg-wh_500x0-wm_3 -wmp_4-s_1470408730.jpg "style=" Float:none; "title=" 1-1.jpg "alt=" Wkiom1g_zu3s1qukaaco5pjf_q4936.jpg-wh_50 "/>

650) this.width=650; "Src=" Http://s5.51cto.com/wyfs02/M00/8A/F3/wKioL1g_zU3jAPntAADDhITC9y4448.jpg-wh_500x0-wm_3 -wmp_4-s_3108648124.jpg "style=" Float:none; "title=" 1-2.jpg "alt=" Wkiol1g_zu3japntaaddhitc9y4448.jpg-wh_50 "/>

650) this.width=650; "Src=" Http://s5.51cto.com/wyfs02/M00/8A/F3/wKioL1g_zU7SqrEHAACA8HS1Y1A445.jpg-wh_500x0-wm_3 -wmp_4-s_609725813.jpg "style=" Float:none; "title=" 1-3.jpg "alt=" Wkiol1g_zu7sqrehaaca8hs1y1a445.jpg-wh_50 "/>

650) this.width=650; "Src=" Http://s5.51cto.com/wyfs02/M01/8A/F7/wKiom1g_zU7w4XSDAAB14DXVj7c067.jpg-wh_500x0-wm_3 -wmp_4-s_4285755920.jpg "style=" Float:none; "title=" 1-4.jpg "alt=" Wkiom1g_zu7w4xsdaab14dxvj7c067.jpg-wh_50 "/>

650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M01/8A/F3/wKioL1g_zU-CjM8dAADrVZvFgYM523.jpg-wh_500x0-wm_3 -wmp_4-s_2445638030.jpg "style=" Float:none; "title=" 1-5.jpg "alt=" Wkiol1g_zu-cjm8daadrvzvfgym523.jpg-wh_50 "/>

650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M02/8A/F7/wKiom1g_zU_BswFxAACZrE67nzE067.jpg-wh_500x0-wm_3 -wmp_4-s_111539249.jpg "style=" Float:none; "title=" 1-6.jpg "alt=" Wkiom1g_zu_bswfxaaczre67nze067.jpg-wh_50 "/>

-Method Two

Use CD to boot, enter first aid mode, reset password passwd

650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M01/8A/F3/wKioL1g_zYyy0XkQAACHwQoIGTo684.jpg-wh_500x0-wm_3 -wmp_4-s_4015340738.jpg "style=" Float:none; "title=" 2-1.jpg "alt=" Wkiol1g_zyyy0xkqaachwqoigto684.jpg-wh_50 "/>

650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M02/8A/F7/wKiom1g_zY2Q7jB3AAFQsF7H0Es953.jpg-wh_500x0-wm_3 -wmp_4-s_3945173807.jpg "style=" Float:none; "title=" 2-2.jpg "alt=" Wkiom1g_zy2q7jb3aafqsf7h0es953.jpg-wh_50 "/>

650) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M02/8A/F3/wKioL1g_zY3Sqt85AACSILzFYWw463.jpg-wh_500x0-wm_3 -wmp_4-s_1590298696.jpg "style=" Float:none; "title=" 2-3.jpg "alt=" Wkiol1g_zy3sqt85aacsilzfyww463.jpg-wh_50 "/>

650) this.width=650; "Src=" Http://s3.51cto.com/wyfs02/M02/8A/F3/wKioL1g_zY6DgU78AACXw8cme-0061.jpg-wh_500x0-wm_3 -wmp_4-s_4211855967.jpg "style=" Float:none; "title=" 2-4.jpg "alt=" Wkiol1g_zy6dgu78aacxw8cme-0061.jpg-wh_50 "/>

650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M00/8A/F7/wKiom1g_zY7ST7xiAAAR1mUvMRY075.jpg-wh_500x0-wm_3 -wmp_4-s_2728569707.jpg "style=" Float:none; "title=" 2-5.jpg "alt=" Wkiom1g_zy7st7xiaaar1muvmry075.jpg-wh_50 "/>

650) this.width=650; "Src=" Http://s4.51cto.com/wyfs02/M00/8A/F3/wKioL1g_zY_BHX1vAAD45iwNBSk785.jpg-wh_500x0-wm_3 -wmp_4-s_981822105.jpg "style=" Float:none; "title=" 2-6.jpg "alt=" Wkiol1g_zy_bhx1vaad45iwnbsk785.jpg-wh_50 "/>

650) this.width=650; "Src=" Http://s2.51cto.com/wyfs02/M01/8A/F7/wKiom1g_zY-TmwsYAABVV0N8j2Q483.jpg-wh_500x0-wm_3 -wmp_4-s_607731024.jpg "style=" Float:none; "title=" 2-7.jpg "alt=" Wkiom1g_zy-tmwsyaabvv0n8j2q483.jpg-wh_50 "/>

This article is from the "12241288" blog, please be sure to keep this source http://12251288.blog.51cto.com/12241288/1878503

The forgotten root password of the CentOS system startup failure