1、CentOS7.0及RHEL7.0進(jìn)入單用戶模式重置root密碼1、啟動(dòng)時(shí)，按空格，停留在此界面：2、光標(biāo)停留在第一項(xiàng)，并按“e”，進(jìn)入編輯界面，找到圖示的一行，并輸入在行尾輸入:init=/bin/sh（看紅色框）,然后按Ctrl-x,啟動(dòng)系統(tǒng)setroot-Jhd6das1:iffeatuire_p1atforM_search_hint=；thensearch一一no-f1Dpp-fs-uuid-set=root-hiirt-biasdBsMsdasl-binst-efi=hd0,nsdosliint-bareHeta1-ahci8Hsdasl-hint=?Fdfl,usdosl10cal

2、08ef-4f65-4d300430074febcG4437elsesearch-no-floppy-fs-Liuid-set=root0cal6Bcf-4f35-4d39-B430-B74febcG4437filiiwxlGiimz-3-IB.8-123.e17.x8S_64root-UUlD-lceaf066-2fd3-4S7B-aax4c-ece5c7clti0fdrordB1vm咅：suBpwonsoleafont=latarcrlicb-sunlGrd.lynvcentosrootcrashkerne1autovconsolskEyMap=Li呂rlgbquietLfiHG=zh_C

3、H.UTF-8iTiitin/shini-trdlSitranfs3.IB.0-123ce17.xSG_G4ai呷PressCtrl-xlostart?Cir1-cforacoMnandproripiorEsCiapetodiscardeditsendreturntothenemuPressingTsb1istspassitilecanpletins3、啟動(dòng)到單用戶模式后的界面：UHStartedShowFlynouthBootScreen.OKneddiedlargeIFdLJk.TOk1ReachedtarjetRa5iicSy5；ten.StartingFileSystenCheckon

4、/deu/disk/by-uuid/lcea.ece5c7clb0fd.Kystemd-fsckE41?:fsclt:errorZ(Nosuchfileordirectory)uhileexecutingfscbt.cxt2forzdcudisk/byumidzlccafOGG2fd34070a01cccc5c?cIbOfdUKStartedFileSystemCheckon/deu/disk/by-nuid/lceaf.c-ece5c?clb0fd.Z.136798sd0：9：G：0：sdaAssumingdriuecache:writethroughL藝.1于出5丫sdU：9：t)：:Ls

5、daJAssumingdriuecache:writethrough2.138480Jsdy0:IsdaAssumingdniuecache:writethroughUKStarteddracutinitqueuehook.hounting/sysrootOKHouiiLed/sysr-uul.TOk1ReachedtarjetInitrdRnntFileSystem.StartingReloadConfigurationfromtieRealRoot.OF1StartedEelaadConfigurationFromtheRealRoot.OHUcaclicdtargfctInitrdFil

6、eSystems.OKBeachedtargetInitrdDefaultTarget.kh-4.Ztt4、在此提示符下輸入以下命令，你輸入的命令不會(huì)顯示出來，輸入完成按回車。1)mountoremount,rw/，輸入完成后，如下圖顯示：DKStartedShouriynouthBootScreen.DKJlieciclicdtargetFilths.DKReachedtargetBasicSysten.StartingFileSystemCheckcm/deu/disk/by-uuiil/lcea.ece5c7clb0fd.hystemd-fsck4171:Fsck:error2(Nosu

7、chfileordirectory)uhieexecutingfsck.extZfor/deu/disk/by-uuid/lceaf066-2fd3-48?0-a84c-ece5c7clb0fdDKStartedFileSystemCheckon/deudisk/by-uuidlceaf.c-ecE5c?clb0fd.乙136796sd0：0：0：0：sdaAssuningdrinecache：writethroughZ.1373571sd0:0：0：0：sdaAssumingdriuecacJie：writethrough2.1384803sd0：0：0：0：sdaAssuningdricc

8、aclic:writethroughDKStarteddracutim辻queuehook.Hourting/sysroot.TOK1HniiintRd/sysrnnt.,DKReachedtargetIm辻rdRootFileSystem.SlcirliiiyReloudCunfiyurnLiutirrunitheRtd1Ruut.DKStartedReloadConfigurationfromtheRealRoot.DKBeachedtargetIm辻rdFileSystens.DKJReachedtargetImitrdDefaultTarget.sh-4.Z#sh-4.Z#2)pass

9、wd輸入時(shí)，如果你安裝的是中文的，就會(huì)有亂碼，如果是英文的，則不是會(huì)。輸入時(shí)，密碼只要輸入一位即可，我輸入的是一個(gè)a”如果有錯(cuò)誤提示，也可以輸入一個(gè)空格做為密碼。輸入后結(jié)果如下：3)touch/.autorelabel(touch、/、.autorelabel之間用空格隔開)如果你之前使用了selinux，則輸入這個(gè)命令，輸入完成后，會(huì)多一個(gè)提示符4)exec/sbin/init或者exec/sbin/reboot輸入這兩個(gè)命令中的一個(gè)，重啟系統(tǒng)StartingudcvWaitforCorwplc-tcDevicenitiolizntion.-HStartingCreatei匚臼器(Start

10、ingudcvWaitforCorwplc-tcDevicenitiolizntion.-HStartingCreatei匚臼器(4匸忙nndes:inzdev.StartingLoadzSaveRamdomSeedE.,(JKnomutcdRFCPipeFileSystem.tOKJStartedSetupUirtua1Console.OKStartedLaad上馬昴.匚ymoduleconFijfurfltian.OKHutiuatedswapzdeM/ittapper/centos-GLaapIOKStiftrtcdLoad/SaveRandomSeed.lOKReadied,targe

11、t弘npStartirngLIH2metaddiLftdctinon.h.OKStartedLUIZmetadlatadaernon.(JKnomutcdRFCPipeFileSystem.OKStartedrileSystemCheckonzdev/diskxby-miid/0tal0afef-4fB5-4d30-8430-074febc6448?tOKStartedConfigrurerEad-onlyrootsupport.UKStiartedImportnetworkconfigiiratioiifromimitramfseI197X47744enid_reqiies-t:Izfler

12、ror,-devfdBjsector0197.669BZ6Jbnd_Fequest:1/0error,deMfd0sectur0OKStartedCreatestaticdevicenodesin/deuaStiflirtinguidevKernelDeviceFtmiag巳口，IOKREflchedtai-gntLnralFiIje:SystemsFrt)-lljuijting/bootta.OKStartediLdlevKern已1DeuiceManagferaStartiHgShowPlymouthBootStreem,B.OK1StarfiedFfaniitiar8inginfLlfC

13、mirrors?Hna.phutsetiE.usingdmttmEotdmprasfrizsspol1irig.OKStartedShouPlymouthBootScreenHOKStartedndeuWaitforCamfplEteDeviceJnitialisation.StartingActiwiionofDMBAIDsetsStartedAc-tiutitinnofDMPAIDeeIe.ReachedtaigetEncryptedUulumes.Mounted/bootaRcftclied.tniFgetStartedAc-tiutitinnofDMPAIDeeIe.Reachedta

14、igetEncryptedUulumes.Mounted/bootaRcftclied.tniFgetLocalFileSystems.Starting丹口皿luzlia11fiIjEsystssniEi.frieciesflryi_-.StartingTriggerFlushingofJummaJtoPersistentStorage-t.StartingrCreateVolatileFilesandDirectories.，StartimgSecurityAuditingService,B.StartingTellPlymuthTnUriteOutRuntiData.UKStiftTtedTriggrerFlushingofJourna1toPersistentStorage.tOKJStartedCrrateUolfttileFilesandDirectories,ssSELliinixtar(|E