{"id":712,"date":"2016-11-14T09:14:52","date_gmt":"2016-11-14T01:14:52","guid":{"rendered":"http:\/\/www.ipcpu.com\/?p=712"},"modified":"2016-11-14T09:14:52","modified_gmt":"2016-11-14T01:14:52","slug":"grub2-centos7","status":"publish","type":"post","link":"https:\/\/c.ipcpu.com\/2016\/11\/grub2-centos7\/","title":{"rendered":"Grub2\u76f8\u5bf9Grub\u7684\u4e00\u4e9b\u6539\u8fdb\u548c\u6ce8\u610f\u4e8b\u9879\uff08CentOS7\uff09"},"content":{"rendered":"
<\/div>\n

Grub2\u76f8\u5bf9Grub\u7684\u4e00\u4e9b\u6539\u8fdb\u548c\u6ce8\u610f\u4e8b\u9879\uff08CentOS7\uff09.md<\/p>\n

Grub2\u6982\u8ff0<\/h2>\n

\u5927\u7ea62002\u5e74\u5de6\u53f3\uff0cYoshinori K. Okuji\u5728PUPA\u91cd\u5199\u4e86GRUB\uff0c\u4f7f\u4ed6\u66f4\u6e05\u6670\uff0c\u5b89\u5168\uff0c\u5065\u58ee\uff0c\u66f4\u5f3a\u5927\uff0cPUPA\u6700\u540e\u628a\u4ed6\u91cd\u547d\u540d\u4e3aGRUB2\uff0c\u628a\u539f\u6765\u7248\u672c\u7684grub\u547d\u540d\u4e3aGRUB Legacy\u3002<\/p>\n

Grub2\u652f\u6301\u66f4\u591a\u7684\u7279\u6027\u548c\u529f\u80fd\uff0c\u5305\u62ec\u81ea\u52a8\u641c\u7d22\u53ef\u7528\u7684\u5185\u6838\u548c\u786c\u76d8\u4e2d\u7684\u53ef\u7528\u7cfb\u7edf\u3001\u652f\u6301\u66f4\u591a\u5206\u533a\u683c\u5f0f\u3001\u6a21\u5757\u5316\u8bbe\u8ba1\u7b49\u3002<\/p>\n

CentOS\u4ece7\u7cfb\u5217\u7248\u672c\u5f00\u59cb\u4f7f\u7528grub2\uff0cubuntu\u4ece9.10\u5f00\u59cb\u4f7f\u7528grub2\u3002\u672c\u6587\u4ee5CentOS7\u4e3a\u4f8b\u3002<\/p>\n

Grub2\u914d\u7f6e\u7684\u4fee\u6539<\/h2>\n

grub2 \u5305\u542b\u4e00\u4e2a\u5b8c\u5168\u4fee\u6539\u8fc7\u7684\u914d\u7f6e\u6587\u4ef6\u53ca\u76ee\u5f55\uff0cmenu.list(grub.conf)\u4e0d\u518d\u4f7f\u7528 \u3002<\/p>\n

grub2\u91c7\u7528\u6a21\u5757\u5316\u7684\u8bbe\u8ba1\uff0c\u4e3b\u8981\u914d\u7f6e\u6587\u4ef6\u662f\/boot\/grub2\/grub.cfg\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5141\u8bb8\u4fee\u6539\u6b64\u6587\u4ef6\uff0c\u800c\u662f\u4fee\u6539\u5176\u4ed6\u914d\u7f6e\uff0c\u6700\u540e\u901a\u8fc7grub-mkconfig\u540d\u91cd\u65b0\u751f\u6210\u3002<\/p>\n

grub2\u53ef\u4ee5\u4fee\u6539\u7684\u914d\u7f6e\u6587\u4ef6\u4e3b\u8981\u662f\/etc\/default\/grub \u548c \/etc\/grub.d \u3002<\/p>\n

  1. [<\/span>root@CT7 <\/span>~]#<\/span> cat  <\/span>\/<\/span>etc<\/span>\/<\/span>default<\/span>\/<\/span>grub<\/span><\/code><\/li>
  2. GRUB_TIMEOUT<\/span>=<\/span>5<\/span><\/code><\/li>
  3. GRUB_DISTRIBUTOR<\/span>=<\/span>\"$(sed 's, release .*$,,g' \/etc\/system-release)\"<\/span><\/code><\/li>
  4. GRUB_DEFAULT<\/span>=<\/span>saved<\/span><\/code><\/li>
  5. GRUB_DISABLE_SUBMENU<\/span>=<\/span>true<\/span><\/code><\/li>
  6. GRUB_TERMINAL_OUTPUT<\/span>=<\/span>\"console\"<\/span><\/code><\/li>
  7. GRUB_CMDLINE_LINUX<\/span>=<\/span>\"crashkernel=auto rd.lvm.lv=rootvg01\/lv01 rhgb quiet net.ifnames=0 biosdevname=0\"<\/span><\/code><\/li>
  8. GRUB_DISABLE_RECOVERY<\/span>=<\/span>\"true\"<\/span><\/code><\/li>
  9. [<\/span>root@CT7 <\/span>~]#<\/span> ll <\/span>\/<\/span>etc<\/span>\/<\/span>grub<\/span>.<\/span>d<\/span>\/<\/span><\/code><\/li>
  10. total <\/span>72<\/span><\/code><\/li>
  11. -<\/span>rwxr<\/span>-<\/span>xr<\/span>-<\/span>x<\/span>.<\/span> <\/span>1<\/span> root root  <\/span>8702<\/span> <\/span>Nov<\/span> <\/span>24<\/span>  <\/span>2015<\/span> <\/span>00<\/span>_header<\/span><\/code><\/li>
  12. -<\/span>rwxr<\/span>-<\/span>xr<\/span>-<\/span>x<\/span>.<\/span> <\/span>1<\/span> root root   <\/span>992<\/span> <\/span>May<\/span>  <\/span>4<\/span>  <\/span>2015<\/span> <\/span>00<\/span>_tuned<\/span><\/code><\/li>
  13. -<\/span>rwxr<\/span>-<\/span>xr<\/span>-<\/span>x<\/span>.<\/span> <\/span>1<\/span> root root   <\/span>230<\/span> <\/span>Nov<\/span> <\/span>24<\/span>  <\/span>2015<\/span> <\/span>01<\/span>_users<\/span><\/code><\/li>
  14. -<\/span>rwxr<\/span>-<\/span>xr<\/span>-<\/span>x<\/span>.<\/span> <\/span>1<\/span> root root <\/span>10232<\/span> <\/span>Nov<\/span> <\/span>24<\/span>  <\/span>2015<\/span> <\/span>10<\/span>_linux<\/span><\/code><\/li>
  15. -<\/span>rwxr<\/span>-<\/span>xr<\/span>-<\/span>x<\/span>.<\/span> <\/span>1<\/span> root root <\/span>10275<\/span> <\/span>Nov<\/span> <\/span>24<\/span>  <\/span>2015<\/span> <\/span>20<\/span>_linux_xen<\/span><\/code><\/li>
  16. -<\/span>rwxr<\/span>-<\/span>xr<\/span>-<\/span>x<\/span>.<\/span> <\/span>1<\/span> root root  <\/span>2559<\/span> <\/span>Nov<\/span> <\/span>24<\/span>  <\/span>2015<\/span> <\/span>20<\/span>_ppc_terminfo<\/span><\/code><\/li>
  17. -<\/span>rwxr<\/span>-<\/span>xr<\/span>-<\/span>x<\/span>.<\/span> <\/span>1<\/span> root root <\/span>11169<\/span> <\/span>Nov<\/span> <\/span>24<\/span>  <\/span>2015<\/span> <\/span>30<\/span>_os<\/span>-<\/span>prober<\/span><\/code><\/li>
  18. -<\/span>rwxr<\/span>-<\/span>xr<\/span>-<\/span>x<\/span>.<\/span> <\/span>1<\/span> root root   <\/span>214<\/span> <\/span>Nov<\/span> <\/span>24<\/span>  <\/span>2015<\/span> <\/span>40<\/span>_custom<\/span><\/code><\/li>
  19. -<\/span>rwxr<\/span>-<\/span>xr<\/span>-<\/span>x<\/span>.<\/span> <\/span>1<\/span> root root   <\/span>216<\/span> <\/span>Nov<\/span> <\/span>24<\/span>  <\/span>2015<\/span> <\/span>41<\/span>_custom<\/span><\/code><\/li>
  20. -<\/span>rw<\/span>-<\/span>r<\/span>--<\/span>r<\/span>--.<\/span> <\/span>1<\/span> root root   <\/span>483<\/span> <\/span>Nov<\/span> <\/span>24<\/span>  <\/span>2015<\/span> README<\/span><\/code><\/li>
  21. [<\/span>root@CT7 <\/span>~]#<\/span><\/code><\/li><\/ol><\/pre>\n
    \u4fee\u6539\u5b8c\u914d\u7f6e\u540e\uff0c\u90fd\u9700\u8981\u901a\u8fc7grub2-mkconfig\u547d\u4ee4\u4e0b\u53d1\u3002<\/p>\n
    1. [<\/span>root@CT7 <\/span>~]#<\/span> grub2<\/span>-<\/span>mkconfig <\/span>-<\/span>o <\/span>\/<\/span>boot<\/span>\/<\/span>grub2<\/span>\/<\/span>grub<\/span>.<\/span>cfg<\/span><\/code><\/li>
    2. Generating<\/span> grub configuration file <\/span>...<\/span><\/code><\/li>
    3. Found<\/span> linux image<\/span>:<\/span> <\/span>\/boot\/<\/span>vmlinuz<\/span>-<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>514.2<\/span>.<\/span>2.el7.x86<\/span>_64<\/span><\/code><\/li>
    4. Found<\/span> initrd image<\/span>:<\/span> <\/span>\/boot\/<\/span>initramfs<\/span>-<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>514.2<\/span>.<\/span>2.el7.x86<\/span>_64<\/span>.<\/span>img<\/span><\/code><\/li>
    5. Found<\/span> linux image<\/span>:<\/span> <\/span>\/boot\/<\/span>vmlinuz<\/span>-<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>327.el7.x86<\/span>_64<\/span><\/code><\/li>
    6. Found<\/span> initrd image<\/span>:<\/span> <\/span>\/boot\/<\/span>initramfs<\/span>-<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>327.el7.x86<\/span>_64<\/span>.<\/span>img<\/span><\/code><\/li>
    7. Found<\/span> linux image<\/span>:<\/span> <\/span>\/boot\/<\/span>vmlinuz<\/span>-<\/span>0<\/span>-<\/span>rescue<\/span>-<\/span>98af9a09ce4e42a397fc1a169eff4005<\/span><\/code><\/li>
    8. Found<\/span> initrd image<\/span>:<\/span> <\/span>\/boot\/<\/span>initramfs<\/span>-<\/span>0<\/span>-<\/span>rescue<\/span>-<\/span>98af9a09ce4e42a397fc1a169eff4005.img<\/span><\/code><\/li>
    9. done<\/span><\/code><\/li>
    10. [<\/span>root@CT7 <\/span>~]#<\/span><\/code><\/li><\/ol><\/pre>\n
      Grub2\u4fee\u6539\u5185\u6838\u542f\u52a8\u987a\u5e8f<\/h2>\n
      \u5728CentOS7\u4e2d\uff0c\u63d0\u4f9b\u4e86\u4e00\u4e2a\u8f6f\u4ef6grubby\uff0c\u53ef\u4ee5\u7528\u6765\u67e5\u770bgrub\u7b56\u7565\uff0c\u5982\u4e0b\uff1a<\/p>\n
      1. #@\u5217\u51fa\u6240\u6709\u5185\u6838\uff0c\u8fd9\u4e2a\u547d\u4ee4\u6bd4\u8f83\u5e38\u7528<\/span><\/code><\/li>
      2. [<\/span>root@CT7 <\/span>~]#<\/span> grubby <\/span>--<\/span>info<\/span>=<\/span>ALL<\/span><\/code><\/li>
      3. index<\/span>=<\/span>0<\/span><\/code><\/li>
      4. kernel<\/span>=<\/span>\/boot\/<\/span>vmlinuz<\/span>-<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>514.2<\/span>.<\/span>2.el7.x86<\/span>_64<\/span><\/code><\/li>
      5. args<\/span>=<\/span>\"ro crashkernel=auto rd.lvm.lv=rootvg01\/lv01 rhgb quiet net.ifnames=0 biosdevname=0 \"<\/span><\/code><\/li>
      6. root<\/span>=<\/span>\/dev\/<\/span>mapper<\/span>\/<\/span>rootvg01<\/span>-<\/span>lv01<\/span><\/code><\/li>
      7. initrd<\/span>=<\/span>\/boot\/<\/span>initramfs<\/span>-<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>514.2<\/span>.<\/span>2.el7.x86<\/span>_64<\/span>.<\/span>img<\/span><\/code><\/li>
      8. title<\/span>=<\/span>CentOS<\/span> <\/span>Linux<\/span> <\/span>(<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>514.2<\/span>.<\/span>2.el7.x86<\/span>_64<\/span>)<\/span> <\/span>7<\/span> <\/span>(<\/span>Core<\/span>)<\/span><\/code><\/li>
      9. index<\/span>=<\/span>1<\/span><\/code><\/li>
      10. kernel<\/span>=<\/span>\/boot\/<\/span>vmlinuz<\/span>-<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>327.el7.x86<\/span>_64<\/span><\/code><\/li>
      11. args<\/span>=<\/span>\"ro crashkernel=auto rd.lvm.lv=rootvg01\/lv01 rhgb quiet net.ifnames=0 biosdevname=0 \"<\/span><\/code><\/li>
      12. root<\/span>=<\/span>\/dev\/<\/span>mapper<\/span>\/<\/span>rootvg01<\/span>-<\/span>lv01<\/span><\/code><\/li>
      13. initrd<\/span>=<\/span>\/boot\/<\/span>initramfs<\/span>-<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>327.el7.x86<\/span>_64<\/span>.<\/span>img<\/span><\/code><\/li>
      14. title<\/span>=<\/span>CentOS<\/span> <\/span>Linux<\/span> <\/span>(<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>327.el7.x86<\/span>_64<\/span>)<\/span> <\/span>7<\/span> <\/span>(<\/span>Core<\/span>)<\/span><\/code><\/li>
      15. index<\/span>=<\/span>2<\/span><\/code><\/li>
      16. kernel<\/span>=<\/span>\/boot\/<\/span>vmlinuz<\/span>-<\/span>0<\/span>-<\/span>rescue<\/span>-<\/span>98af9a09ce4e42a397fc1a169eff4005<\/span><\/code><\/li>
      17. args<\/span>=<\/span>\"ro crashkernel=auto rd.lvm.lv=rootvg01\/lv01 rhgb quiet net.ifnames=0 biosdevname=0 \"<\/span><\/code><\/li>
      18. root<\/span>=<\/span>\/dev\/<\/span>mapper<\/span>\/<\/span>rootvg01<\/span>-<\/span>lv01<\/span><\/code><\/li>
      19. initrd<\/span>=<\/span>\/boot\/<\/span>initramfs<\/span>-<\/span>0<\/span>-<\/span>rescue<\/span>-<\/span>98af9a09ce4e42a397fc1a169eff4005.img<\/span><\/code><\/li>
      20. title<\/span>=<\/span>CentOS<\/span> <\/span>Linux<\/span> <\/span>(<\/span>0<\/span>-<\/span>rescue<\/span>-<\/span>98af9a09ce4e42a397fc1a169eff4005<\/span>)<\/span> <\/span>7<\/span> <\/span>(<\/span>Core<\/span>)<\/span><\/code><\/li>
      21. index<\/span>=<\/span>3<\/span><\/code><\/li>
      22. non linux entry<\/span><\/code><\/li>
      23. #@\u5217\u51fa\u9ed8\u8ba4\u5185\u6838<\/span><\/code><\/li>
      24. [<\/span>root@CT7 <\/span>~]#<\/span> grubby <\/span>--<\/span>default<\/span>-<\/span>kernel<\/span><\/code><\/li>
      25. \/<\/span>boot<\/span>\/<\/span>vmlinuz<\/span>-<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>327.el7.x86<\/span>_64<\/span><\/code><\/li>
      26. [<\/span>root@CT7 <\/span>~]#<\/span> grubby <\/span>--<\/span>default<\/span>-<\/span>index<\/span><\/code><\/li>
      27. 1<\/span><\/code><\/li>
      28. #@\u8bbe\u7f6e\u9ed8\u8ba4\u5185\u6838<\/span><\/code><\/li>
      29. [<\/span>root@CT7 <\/span>~]#<\/span> grubby <\/span>--<\/span>set<\/span>-<\/span>default<\/span> <\/span>\/<\/span>boot<\/span>\/<\/span>initramfs<\/span>-<\/span>3.10<\/span>.<\/span>0<\/span>-<\/span>514.2<\/span>.<\/span>2.el7.x86<\/span>_64<\/span>.<\/span>img<\/span><\/code><\/li>
      30. #@\u8bbe\u7f6e\u542f\u52a8\u987a\u5e8f\uff0c\u7f16\u53f7\u4ece0\u5f00\u59cb<\/span><\/code><\/li>
      31. [<\/span>root@CT7 <\/span>~]#<\/span> grub2<\/span>-<\/span>set<\/span>-<\/span>default<\/span> <\/span>1<\/span><\/code><\/li>
      32. #@\u66f4\u65b0GRUB<\/span><\/code><\/li>
      33. [<\/span>root@CT7 <\/span>~]#<\/span> grub2<\/span>-<\/span>mkconfig <\/span>-<\/span>o <\/span>\/<\/span>boot<\/span>\/<\/span>grub2<\/span>\/<\/span>grub<\/span>.<\/span>cfg<\/span><\/code><\/li><\/ol><\/pre>\n
        \u6ce8\u610f\uff1a<\/strong>\u5c1d\u8bd5\u4e86grubby\u4fee\u6539grub\uff0c\u53d1\u73b0\u4e0d\u751f\u6548\uff0c\u8fd8\u662f\u7528grub2-set-default\u5427\u3002<\/p>\n
        grub2\u8bbe\u7f6e\u5bc6\u7801<\/h2>\n
        grub2\u4e2d\u5bc6\u7801\u8bbe\u7f6e\uff0c\u5728\/etc\/grub.d\/01_users\u91cc\u6709\u76f8\u5173\u5b9a\u4e49\uff08CentOS7\uff09<\/p>\n
        1. [<\/span>root@CT7 grub<\/span>.<\/span>d<\/span>]#<\/span> cat <\/span>\/<\/span>etc<\/span>\/<\/span>grub<\/span>.<\/span>d<\/span>\/<\/span>01<\/span>_users<\/span><\/code><\/li>
        2. #!\/bin\/sh -e<\/span><\/code><\/li>
        3. cat <\/span><<<\/span> EOF<\/span><\/code><\/li>
        4. if<\/span> <\/span>[<\/span> <\/span>-<\/span>f \\$<\/span>{<\/span>prefix<\/span>}\/<\/span>user<\/span>.<\/span>cfg <\/span>];<\/span> <\/span>then<\/span><\/code><\/li>
        5.   source \\$<\/span>{<\/span>prefix<\/span>}\/<\/span>user<\/span>.<\/span>cfg<\/span><\/code><\/li>
        6.   <\/span>if<\/span> <\/span>[<\/span> <\/span>-<\/span>n \\$<\/span>{<\/span>GRUB2_PASSWORD<\/span>}<\/span> <\/span>];<\/span> <\/span>then<\/span><\/code><\/li>
        7.     <\/span>set<\/span> superusers<\/span>=<\/span>\"root\"<\/span><\/code><\/li>
        8.     <\/span>export<\/span> superusers<\/span><\/code><\/li>
        9.     password_pbkdf2 root \\$<\/span>{<\/span>GRUB2_PASSWORD<\/span>}<\/span><\/code><\/li>
        10.   <\/span>fi<\/span><\/code><\/li>
        11. fi<\/span><\/code><\/li>
        12. EOF<\/span><\/code><\/li>
        13. [<\/span>root@CT7 grub<\/span>.<\/span>d<\/span>]#<\/span><\/code><\/li><\/ol><\/pre>\n
          \u53ef\u4ee5\u770b\u51fa\u9ed8\u8ba4\u7528\u6237\u540d\u662froot\uff0c\u5bc6\u7801\u5219\u9700\u8981\u901a\u8fc7grub2-setpassword\u547d\u4ee4\u6765\u8bbe\u5b9a\u3002<\/p>\n
          1. #@\u8bbe\u7f6e\u5bc6\u7801<\/span><\/code><\/li>
          2. [<\/span>root@CT7 grub<\/span>.<\/span>d<\/span>]#<\/span> grub2<\/span>-<\/span>setpassword<\/span><\/code><\/li>
          3. Enter<\/span> password<\/span>:<\/span><\/code><\/li>
          4. Confirm<\/span> password<\/span>:<\/span><\/code><\/li>
          5. #@\u67e5\u770b\u5bc6\u7801\u6587\u4ef6<\/span><\/code><\/li>
          6. [<\/span>root@CT7 grub<\/span>.<\/span>d<\/span>]#<\/span> cat  <\/span>\/<\/span>boot<\/span>\/<\/span>grub2<\/span>\/<\/span>user<\/span>.<\/span>cfg<\/span><\/code><\/li>
          7. GRUB2_PASSWORD<\/span>=<\/span>grub<\/span>.<\/span>pbkdf2<\/span>.<\/span>sha512<\/span>.<\/span>10000.FAFA0A09BD3F228BA786EB2C1BD41255E2F79972E406E8C2EB2FBB79227ABEC2696F466916FD35625C56BA1BE51B3BE46F41539501CC8305DFA8434EA5FD74D4.54E2C5C81CF5C65569EFD4F8BDD6AA16103FA12F22C4BC075ED47B46C0C77F7426AFB476A7DD97A840FCE2AB546E1B5CBD353A0F7B5D9A27D8F4D41332533AF1<\/span><\/code><\/li>
          8. [<\/span>root@CT7 grub<\/span>.<\/span>d<\/span>]#<\/span><\/code><\/li><\/ol><\/pre>\n
            \u6b64\u5904\u4e0d\u9700\u8981\u4f7f\u7528grub2-mkconfig\u4e86\uff0c\u5bc6\u7801\u5b58\u5728user.cfg\u91cc\u7684\u3002<\/p>\n
            Grub2\u78c1\u76d8\u7f16\u53f7\u7684\u53d8\u66f4<\/h2>\n
            \u65e7\u7248\u7684 grub \u4e0d\u8bba\u78c1\u76d8\u8fd8\u662f\u5206\u533a\u7684\u8d77\u59cb\u53f7\u7801\u90fd\u662f 0 \u53f7\uff0c\u800c grub2 \u5728\u5206\u533a\u7684\u90e8\u5206\u662f\u4ee5 1 \u5f00\u59cb\u7f16\u53f7\u3002 
            \n\u5982\u4e0b\uff1a<\/p>\n
            \n
            \uff08hd0,msdos1\uff09\u7b2c\u4e00\u5757\u78c1\u76d8\uff0c\u7b2c\u4e00\u4e2a\u5206\u533a 
            \n  \uff08hd1,gpt2\uff09 \u7b2c\u4e8c\u5757\u78c1\u76d8\uff0c\u7b2c\u4e8c\u4e2a\u5206\u533a\uff08GPT\u683c\u5f0f\uff09<\/p>\n<\/blockquote>\n
            \u91cd\u7f6eroot\u5bc6\u7801<\/h2>\n
            \u5728\u65b0\u7248\u7684systemd\u7ba1\u7406\u673a\u5236\u4e2d\uff0c\u9ed8\u8ba4\u7684rescue\u6a21\u5f0f\u662f\u65e0\u6cd5\u76f4\u63a5\u53d6\u5f97root\u6743\u9650\u7684\u3002<\/p>\n
            \u9700\u8981\u5728 linux16 \u7684\u90a3\u884c\u6700\u540e\u52a0\u4e0a\u201crd.break\u201d\u53c2\u6570\u6765\u5904\u7406\u3002<\/p>\n
            \u4e4b\u540e\u4f1a\u8fdb\u5165\u5230RAMFS\uff0croot\u5206\u533a\u4f1a\u6302\u8f7d\u5230\/sysroot\u3002<\/p>\n
            \u91cd\u65b0mount\u548cchroot\u540e\u53ef\u4ee5\u91cd\u7f6e\u5bc6\u7801\u4e86\u3002<\/p>\n
            1. mount <\/span>-<\/span>o remount<\/span>,<\/span>rw <\/span>\/<\/span>sysroot <\/span><\/code><\/li>
            2. chroot <\/span>\/<\/span>sysroot     <\/span><\/code><\/li>
            3. echo <\/span>\"your_root_new_pw\"<\/span> <\/span>|<\/span> passwd <\/span>--<\/span>stdin root<\/span><\/code><\/li><\/ol><\/pre>\n
              \u53c2\u8003\u8d44\u6599<\/h2>\n
              https:\/\/wizardforcel.gitbooks.io\/vbird-linux-basic-4e\/content\/168.html<\/a> 
              \n              https:\/\/access.redhat.com\/documentation\/en-US\/Red_Hat_Enterprise_Linux\/7\/html\/System_Administrators_Guide\/sec-Making_Persistent_Changes_to_a_GRUB_2_Menu_Using_the_grubby_Tool.html<\/a><\/p>\n
              \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1aIPCPU-\u7f51\u7edc\u4e4b\u8def<\/a> » Grub2\u76f8\u5bf9Grub\u7684\u4e00\u4e9b\u6539\u8fdb\u548c\u6ce8\u610f\u4e8b\u9879\uff08CentOS7\uff09<\/a><\/p>","protected":false},"excerpt":{"rendered":"
              Grub2\u76f8\u5bf9Grub\u7684\u4e00\u4e9b\u6539\u8fdb\u548c\u6ce8\u610f\u4e8b\u9879\uff08CentOS7\uff09.md Grub2\u6982\u8ff0 \u5927\u7ea62002\u5e74\u5de6\u53f3\uff0cYoshinori K. Okuji\u5728PUPA\u91cd\u5199\u4e86GRUB\uff0c\u4f7f\u4ed6\u66f4\u6e05\u6670\uff0c\u5b89\u5168\uff0c\u5065\u58ee\uff0c\u66f4\u5f3a\u5927\uff0cPUPA\u6700\u540e\u628a\u4ed6\u91cd\u547d\u540d\u4e3aGRUB2\uff0c\u628a\u539f\u6765\u7248\u672c\u7684grub\u547d\u540d\u4e3aGRUB Legacy\u3002 Grub2\u652f\u6301\u66f4\u591a\u7684\u7279\u6027\u548c\u529f\u80fd\uff0c\u5305\u62ec\u81ea\u52a8\u641c\u7d22\u53ef\u7528\u7684\u5185\u6838\u548c\u786c\u76d8\u4e2d\u7684\u53ef\u7528\u7cfb\u7edf\u3001\u652f\u6301\u66f4\u591a\u5206\u533a\u683c\u5f0f\u3001\u6a21\u5757\u5316\u8bbe\u8ba1\u7b49\u3002 CentOS\u4ece7\u7cfb\u5217\u7248\u672c\u5f00\u59cb\u4f7f\u7528grub2\uff0cubuntu\u4ece9.10\u5f00\u59cb\u4f7f\u7528grub2\u3002\u672c\u6587\u4ee5CentOS7\u4e3a\u4f8b\u3002 Grub2\u914d\u7f6e\u7684\u4fee\u6539 grub2 \u5305\u542b\u4e00\u4e2a\u5b8c\u5168\u4fee\u6539\u8fc7\u7684\u914d\u7f6e\u6587\u4ef6\u53ca\u76ee\u5f55\uff0cmenu.list(grub.conf)\u4e0d\u518d\u4f7f\u7528 \u3002 grub2\u91c7\u7528\u6a21\u5757\u5316\u7684\u8bbe\u8ba1\uff0c\u4e3b\u8981\u914d\u7f6e\u6587\u4ef6\u662f\/boot\/grub2\/grub.cfg\uff0c\u9ed8\u8ba4\u60c5\u51b5\u4e0b\u5141\u8bb8\u4fee\u6539\u6b64\u6587\u4ef6\uff0c\u800c\u662f\u4fee\u6539\u5176\u4ed6\u914d\u7f6e\uff0c\u6700\u540e\u901a\u8fc7grub-mkconfig\u540d\u91cd\u65b0\u751f\u6210\u3002 grub2\u53ef\u4ee5\u4fee\u6539\u7684\u914d\u7f6e\u6587\u4ef6\u4e3b\u8981\u662f\/etc\/default\/grub \u548c \/etc\/grub.d \u3002 [root@CT7 ~]# cat \/etc\/default\/grubGRUB_TIMEOUT=5GRUB_DISTRIBUTOR=”$(sed ‘s, release .*$,,g’ \/etc\/system-release)”GRUB_DEFAULT=savedGRUB_DISABLE_SUBMENU=trueGRUB_TERMINAL_OUTPUT=”console”GRUB_CMDLINE_LINUX=”crashkernel=auto rd.lvm.lv=rootvg01\/lv01 rhgb quiet net.ifnames=0 biosdevname=0″GRUB_DISABLE_RECOVERY=”true”[root@CT7 ~]# ll \/etc\/grub.d\/total 72-rwxr-xr-x. 1 root root 8702 Nov 24 2015 00_header-rwxr-xr-x. 1 root root 992 May 4 2015 00_tuned-rwxr-xr-x. 1 root root 230 Nov […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[110,111,112,113,17,114],"_links":{"self":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/712"}],"collection":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/comments?post=712"}],"version-history":[{"count":0,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/712\/revisions"}],"wp:attachment":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/media?parent=712"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/categories?post=712"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/tags?post=712"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}