专业北京网站建设公司,影楼和工作室的区别,软件开发工时费用标准,电商网站建设标准测试系统#xff1a;linux-debian 备份系统
1、插入dd有systemrescuecd-x86-4.0.1.iso的系统备份恢复U盘#xff1b;
2、开机按DEL进入BIOS#xff0c;设置BOOT为USB-HDD启动。SaveExit#xff1b;
3、进入备份恢复系统界面#xff1a;----------------------------…测试系统linux-debian 备份系统
1、插入dd有systemrescuecd-x86-4.0.1.iso的系统备份恢复U盘
2、开机按DEL进入BIOS设置BOOT为USB-HDD启动。SaveExit
3、进入备份恢复系统界面-------------------------------------------------------------------- | SYSTEM-RESCUE-CD 4.0.4 (www.sysresccd.org) --------------------------------------------------------------------| 1) SystemRescueCd: default boot opetions | 2) SystemRescueCd: all files cached to memory (docache) | 3) SystemRescueCd: framebuffer console in high resolution | 4) SystemRescueCd: do not ask for keyboard, use US keymap | 5) Boot an exising Linux system installed on the disk | 6) SystemRescueCd: alternative kernel with default boot option | 7) SystemRescueCd: directly start the graphical environment | | A) Run system tools from floppy disk image... | B) Standard 32bit kernel (rescue32) with more choice... | C) Standard 64bit kernel (rescue64) with more choice... | D) Alternative 32bit kernel (altker32) with more choice... | E) Alternative 64bit kernel (altker64) with more choice... | | *) Boot from first hard disk | *) Boot from second hard disk --------------------------------------------------------------------选择1回车。 (大概等待10分钟视服务器而定)
4、查看系统分区fdisk -lModel: ATA ST330621A (scsi)Disk /dev/sda: 30.0GBSector size (logical/physical): 512B/512BPartition Table: gptDisk Flags: Number Start End Size File system Name Flags1 17.4kB 1000MB 1000MB ext2 boot2 1000MB 3000MB 2000MB linux-swap(v1)3 3000MB 8000MB 5000MB ext34 8000MB 30.0GB 22.0GB ext3Model: Generic Flash Disk (scsi)Disk /dev/sdb: 8020MBSector size (logical/physical): 512B/512BPartition Table: msdosDisk Flags: Number Start End Size Type File system Flags1 512B 8020MB 8020MB primary fat32 boot, lba查看当前U盘目录及使用情况df -hFilesystem Size Used Avall Use% Mounted onrootfs 498M 800K 497M 1% /udev 10M 0 10M 0% /dev/dev/sdb1 7.5G 2.7G 4.9G 36% /livemnt/boot/dev/loop0 339M 339M 0 100% /livemnt/squashfstmpfs 498M 800K 497M 1% /livemnt/memorynone 498M 800K 497M 1% /tmpfs 512M 16K 512M 1% /livemnt/tftpmemnone 512M 16K 512M 1% /tftpboottmpfs 498M 636K 497M 1% /runudev 10M 0 10M 0% /devshm 498M 0 498M 0% /dev/shmcgroup_root 10M 0 10M 0% /sys/fs/cgrouptmpfs 498M 0 498M 0% /tmp5、 挂载U盘分区:mount /dev/sdb2 /mnt/floppy或直接在U盘目录中赋予一个目录读写权限:mount -o remount,rw /livemnt/boot/
6、 创建镜像partimage进入备份恢复界面----------------------------------------------------------------------| Partition Image 0.6.9 |--------------------------------------------------------------------| * Partition to save?restore | sda1 ext2fs 953.00 MiB | sda2 swap (v1) 1.86 GiB | sda3 ext3fs 5.00 GiB | sda5 ext3fs 25.16 GiB | sdb1 fat32 7.47 GiB | |--------------------------------------------------------------------| * Image file to create/use | ___________________________________________________________ * |--------------------------------------------------------------------| Action to be done: Next (F5) | (*) Save partition into a new image file | ( ) Restore partition from an image file About | ( ) Restore an MBR from the image file | Exit (F6) | [ ] Connect to server | IP/name of the server: ________________________ Port: 4025__ | [X] Encrypt data on the network with SSL ---------------------------------------------------------------------[1] 选择要备份的区域sda1 ext2fs 953.00 MiB [2] 填写要存储的备份文件名/livemnt/boot/ncweb_img/ncweb_sda1_boot.img *[3] 选择备份新镜像(*) Save partition into a new image file[4] 按F5进入下一步-------------------------------------------------------------------------| save partition to image file |-----------------------------------------------------------------------| Compression level | ( ) None (very fast very big file) | (*) Gzip (.gz: medium speed small image file) | ( ) Bzip2 (.bz2: very slow very smaill image file) | | Options If finished successfully: | [X] Check partition before saving (*) Wait | [X] Enter description ( ) Halt | [ ] Overwrite without prompt ( ) Reboot | ( ) Quit | Image splut mode ( ) Last | ( ) Automatic split (when no space left) | (*) Into files whose size is:........... 2037____MiB | [ ] Wait after each volume change | | Contine (F5) Exit (F6) Main window (F7) -------------------------------------------------------------------------[5] 描述镜像文件-------------------------------------------------------------------------| Parition description |-----------------------------------------------------------------------| You can enter a description of the saved partition: | ________________________________________________________________ | | ------ | | OK | | ------ -------------------------------------------------------------------------如填写ncweb sda1 boot 2.0GB image[6] 提示当前分区信息点击OKExt3fs informationsSpave usage:........................8%Used space:.........................2.17 GiBFree space:.........................23.00 GiBBitmap size:........................3.15 MiBLabel:..............................Number of groups:...................202First block:........................0Ext3fs journalization:..............yesSparse super block:.................yesLarge files support:................yesFile system revision:...............1[7] 生成镜像---------------------------------------------------------------------------------| save partition to image file |-------------------------------------------------------------------------------| Partition to save:.........../dev/sda5 | Size of the Partition:.......25.16 GiB 27018657792 bytes | Current image file:........../livemnt/boot/ncweb_img/ncweb_sda1_boot.img000 | Image file size:.............238.13 MiB | Available space for image:...4.45 GiB 4721212313 bytes | Detected file system:........ext3fs | Compression level:...........gzip | | Time elapsed:................3m:45sec | Estimated time remaining:....1m:23sec | Speed:.......................388.32 MiB/min | Data copied:.................1.75 GiB / 2.17 GiB | | _____________________________8%___________________________________ ---------------------------------------------------------------------------------[8] 完成,点击OKSuccessOperation successfully finished:Time elapased: 5m:53secSpeed: 376.9 MiB/minData copied: 2.17 GiB
7、导出分区表[1] MBR类型# sfdisk -d /dev/sda /mnt/floppy/ncweb.fdisk[2] GPT等类型# gdiskGPT fdisk (gdisk) version 0.8.8Type device filename, or press Enter to exit: /dev/sdaPartition table scan:MBR: MBR onlyBSD: not presentAPM: not presentGPT: not present*****************************************************************Found invalid GPT and valid MBR; converting MBR to GPT formatin memory. THIS OPERATION IS POENTIALLY DESTRUCTIVE! Exit bytyping q if you dont want to convert your MBR partitionsto GPT format!*****************************************************************Command (? for help): [3]输入备份命令bCommand (? for help): bEnter backup filename to save:[4]输入要备份的区域//livemnt/boot/ncwww_img/ncwww.fdiskEnter backup filename to save: /livemnt/boot/ncwww_img/ncwww.fdiskThe operation has completed successfully.[5]退出q恢复系统
1、导入分区表[1] MBR类型# sfdisk /dev/sda /mnt/floppy/ncweb.fdisk[2] GPT等类型#gdiskGPT fdisk (gdisk) version 0.8.8Type device filename, or press Enter to exit: /dev/sdaPartition table scan:MBR: MBR onlyBSD: not presentAPM: not presentGPT: not present*****************************************************************Found invalid GPT and valid MBR; converting MBR to GPT formatin memory. THIS OPERATION IS POENTIALLY DESTRUCTIVE! Exit bytyping q if you dont want to convert your MBR partitionsto GPT format!*****************************************************************Command (? for help): [3] 输入恢复命令rCommand (? for help): rRecovery/transformation command (? for help):[4] 输入子命令lRecovery/transformation command (? for help): lEnter backup filename to load:[5] 输入要恢复的文件名/livemnt/boot/ncwww_img/ncwww.fdiskEnter backup filename to load: /livemnt/boot/ncwww_img/ncwww.fdiskRecovery/transformation command (? for help):[6] 输入写入的子命令wRecovery/transformation command (? for help): wFinal checks complete. About to write GPT data. THIS WILL OVERWRITE EXISTINGPARTITIONS!![7] 输入Y确认进行恢复Do you want to proceed? (Y/N): YOK; writing new GUID partition table (GPT) to /dev/sda.The operation has completed suceesfully.
2、恢复分区: partimage进入备份恢复界面----------------------------------------------------------------------| Partition Image 0.6.9 |--------------------------------------------------------------------| * Partition to save?restore | sda1 ext2fs 953.00 MiB | sda2 swap (v1) 1.86 GiB | sda3 ext3fs 5.00 GiB | sda5 ext3fs 25.16 GiB | sdb1 fat32 7.47 GiB | |--------------------------------------------------------------------| * Image file to create/use | ___________________________________________________________ * |--------------------------------------------------------------------| Action to be done: Next (F5) | ( ) Save partition into a new image file | (*) Restore partition from an image file About | ( ) Restore an MBR from the image file | Exit (F6) | [ ] Connect to server | IP/name of the server: ________________________ Port: 4025__ | [X] Encrypt data on the network with SSL ----------------------------------------------------------------------[1] 选择要恢复的区域sda1 ext2fs 953.00 MiB [2] 填写要恢复用的镜像文件名/livemnt/boot/ncweb_img/ncweb_sda1_boot.img *[3] 选择用镜像恢复(*) Restore partition from an image file[4] 按F5,进入下一步直接点击OK。
3、安装GRUB确认存在分区表和分区内容后REBOOT重启。-------------------------------------------------------------------- | SYSTEM-RESCUE-CD 4.0.4 (www.sysresccd.org) --------------------------------------------------------------------| 1) SystemRescueCd: default boot opetions | 2) SystemRescueCd: all files cached to memory (docache) | 3) SystemRescueCd: framebuffer console in high resolution | 4) SystemRescueCd: do not ask for keyboard, use US keymap | 5) Boot an exising Linux system installed on the disk | 6) SystemRescueCd: alternative kernel with default boot option | 7) SystemRescueCd: directly start the graphical environment | | A) Run system tools from floppy disk image... | B) Standard 32bit kernel (rescue32) with more choice... | C) Standard 64bit kernel (rescue64) with more choice... | D) Alternative 32bit kernel (altker32) with more choice... | E) Alternative 64bit kernel (altker64) with more choice... | | *) Boot from first hard disk | *) Boot from second hard disk --------------------------------------------------------------------选择5回车。 (大概等待10分钟视服务器而定)进入系统后root登录终端# grub-install /dev/sda若提示error按提示添加运行参数# grub-install /dev/sda --force完成后reboot。拔出U盘。gdisk其它功能如创建分区[n]删除分区[d]改写分区类型[t] 等命令参数请自行通过帮助命令?来了解。
