MBR磁盘（分区表备份恢复）

淡淡的烟草味﹌ 2023-10-09 12:51 62阅读 0赞

### 介绍 ###

1.  硬盘主引导MBR由4个部分组成
2.  主引导程序（偏移地址0000H--0088H），它负责从活动分区中装载，并运行系统引导程序
3.  出错信息数据区，偏移地址0089H--00E1H为出错信息，00E2H--01BDH全为0字节
4.  分区表（DPT，Disk Partition Table）含4个分区项，偏移地址01BEH--01FDH，每个分区表项长16个字节，共64字节为分区项1、分区项2、分区项3、分区项4
5.  结束标志字，偏移地址01FE--01FF的2个字节值为结束标志55AA

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70][]

### 一、查看主引导扇区（十六进制显示） ###

1.  从eb开始到倒数第六行80前面的00（总共446字节）
2.  从倒数第六行的80到倒数第二行55前面是主分区表（64字节），第一个分区是80开头（说明是活动分区），00开头表示不活动。
3.  最后是55 aa 结束标记位

root@localhost ~]# hexdump -C -n 512 /dev/sda
    00000000  eb 63 90 10 8e d0 bc 00  b0 b8 00 00 8e d8 8e c0  |.c..............|
    00000010  fb be 00 7c bf 00 06 b9  00 02 f3 a4 ea 21 06 00  |...|.........!..|
    00000020  00 be be 07 38 04 75 0b  83 c6 10 81 fe fe 07 75  |....8.u........u|
    00000030  f3 eb 16 b4 02 b0 01 bb  00 7c b2 80 8a 74 01 8b  |.........|...t..|
    00000040  4c 02 cd 13 ea 00 7c 00  00 eb fe 00 00 00 00 00  |L.....|.........|
    00000050  00 00 00 00 00 00 00 00  00 00 00 80 01 00 00 00  |................|
    00000060  00 00 00 00 ff fa 90 90  f6 c2 80 74 05 f6 c2 70  |...........t...p|
    00000070  74 02 b2 80 ea 79 7c 00  00 31 c0 8e d8 8e d0 bc  |t....y|..1......|
    00000080  00 20 fb a0 64 7c 3c ff  74 02 88 c2 52 be 05 7c  |. ..d|<.t...R..||
    00000090  b4 41 bb aa 55 cd 13 5a  52 72 3d 81 fb 55 aa 75  |.A..U..ZRr=..U.u|
    000000a0  37 83 e1 01 74 32 31 c0  89 44 04 40 88 44 ff 89  |7...t21..D.@.D..|
    000000b0  44 02 c7 04 10 00 66 8b  1e 5c 7c 66 89 5c 08 66  |D.....f..\|f.\.f|
    000000c0  8b 1e 60 7c 66 89 5c 0c  c7 44 06 00 70 b4 42 cd  |..`|f.\..D..p.B.|
    000000d0  13 72 05 bb 00 70 eb 76  b4 08 cd 13 73 0d 5a 84  |.r...p.v....s.Z.|
    000000e0  d2 0f 83 de 00 be 85 7d  e9 82 00 66 0f b6 c6 88  |.......}...f....|
    000000f0  64 ff 40 66 89 44 04 0f  b6 d1 c1 e2 02 88 e8 88  |d.@f.D..........|
    00000100  f4 40 89 44 08 0f b6 c2  c0 e8 02 66 89 04 66 a1  |.@.D.......f..f.|
    00000110  60 7c 66 09 c0 75 4e 66  a1 5c 7c 66 31 d2 66 f7  |`|f..uNf.\|f1.f.|
    00000120  34 88 d1 31 d2 66 f7 74  04 3b 44 08 7d 37 fe c1  |4..1.f.t.;D.}7..|
    00000130  88 c5 30 c0 c1 e8 02 08  c1 88 d0 5a 88 c6 bb 00  |..0........Z....|
    00000140  70 8e c3 31 db b8 01 02  cd 13 72 1e 8c c3 60 1e  |p..1......r...`.|
    00000150  b9 00 01 8e db 31 f6 bf  00 80 8e c6 fc f3 a5 1f  |.....1..........|
    00000160  61 ff 26 5a 7c be 80 7d  eb 03 be 8f 7d e8 34 00  |a.&Z|..}....}.4.|
    00000170  be 94 7d e8 2e 00 cd 18  eb fe 47 52 55 42 20 00  |..}.......GRUB .|
    00000180  47 65 6f 6d 00 48 61 72  64 20 44 69 73 6b 00 52  |Geom.Hard Disk.R|
    00000190  65 61 64 00 20 45 72 72  6f 72 0d 0a 00 bb 01 00  |ead. Error......|
    000001a0  b4 0e cd 10 ac 3c 00 75  f4 c3 00 00 00 00 00 00  |.....<.u........|
    000001b0  00 00 00 00 00 00 00 00  f0 03 0f 00 00 00 80 20  |............... |
    000001c0  21 00 83 dd 1e 3f 00 08  00 00 00 a0 0f 00 00 dd  |!....?..........|
    000001d0  1f 3f 8e fe ff ff 00 a8  0f 00 00 58 70 02 00 00  |.?.........Xp...|
    000001e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    000001f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|
    00000200

### 二、备份分区表 ###

1、dd备份，if（input file）、of（output file）、bs（块大小，1kb）、count（备份66字节）、skip（跳过if文件前面446字节）

[root@localhost ~]# dd if=/dev/sda of=/tmp/dpt bs=1 count=66 skip=446
    66+0 records in
    66+0 records out
    66 bytes (66 B) copied, 0.000514697 s, 128 kB/s
    [root@localhost ~]# ll /tmp/dpt 
    -rw-r--r--. 1 root root 66 Sep 24 04:20 /tmp/dpt
    [root@localhost ~]# hexdump -C /tmp/dpt 
    00000000  80 20 21 00 83 dd 1e 3f  00 08 00 00 00 a0 0f 00  |. !....?........|
    00000010  00 dd 1f 3f 8e fe ff ff  00 a8 0f 00 00 58 70 02  |...?.........Xp.|
    00000020  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    *
    00000040  55 aa                                             |U.|
    00000042

### 三、案例1（分区表破坏之后，系统还没重启） ###

人为修改分区表（不是删除，删除数据就都没有了），模拟分区表故障

1、if=/dev/zero（空数据）、seek（跳过of文件前面510字节）；效果就是清零55 aa

[root@localhost ~]# dd if=/dev/zero of=/dev/sda bs=1 count=2 seek=510
    2+0 records in
    2+0 records out
    2 bytes (2 B) copied, 0.000156453 s, 12.8 kB/s

2、查看效果，55 aa已经被清零

[root@localhost ~]# hexdump -C -n 512 /dev/sda
    00000000  eb 63 90 10 8e d0 bc 00  b0 b8 00 00 8e d8 8e c0  |.c..............|
    00000010  fb be 00 7c bf 00 06 b9  00 02 f3 a4 ea 21 06 00  |...|.........!..|
    00000020  00 be be 07 38 04 75 0b  83 c6 10 81 fe fe 07 75  |....8.u........u|
    00000030  f3 eb 16 b4 02 b0 01 bb  00 7c b2 80 8a 74 01 8b  |.........|...t..|
    00000040  4c 02 cd 13 ea 00 7c 00  00 eb fe 00 00 00 00 00  |L.....|.........|
    00000050  00 00 00 00 00 00 00 00  00 00 00 80 01 00 00 00  |................|
    00000060  00 00 00 00 ff fa 90 90  f6 c2 80 74 05 f6 c2 70  |...........t...p|
    00000070  74 02 b2 80 ea 79 7c 00  00 31 c0 8e d8 8e d0 bc  |t....y|..1......|
    00000080  00 20 fb a0 64 7c 3c ff  74 02 88 c2 52 be 05 7c  |. ..d|<.t...R..||
    00000090  b4 41 bb aa 55 cd 13 5a  52 72 3d 81 fb 55 aa 75  |.A..U..ZRr=..U.u|
    000000a0  37 83 e1 01 74 32 31 c0  89 44 04 40 88 44 ff 89  |7...t21..D.@.D..|
    000000b0  44 02 c7 04 10 00 66 8b  1e 5c 7c 66 89 5c 08 66  |D.....f..\|f.\.f|
    000000c0  8b 1e 60 7c 66 89 5c 0c  c7 44 06 00 70 b4 42 cd  |..`|f.\..D..p.B.|
    000000d0  13 72 05 bb 00 70 eb 76  b4 08 cd 13 73 0d 5a 84  |.r...p.v....s.Z.|
    000000e0  d2 0f 83 de 00 be 85 7d  e9 82 00 66 0f b6 c6 88  |.......}...f....|
    000000f0  64 ff 40 66 89 44 04 0f  b6 d1 c1 e2 02 88 e8 88  |d.@f.D..........|
    00000100  f4 40 89 44 08 0f b6 c2  c0 e8 02 66 89 04 66 a1  |.@.D.......f..f.|
    00000110  60 7c 66 09 c0 75 4e 66  a1 5c 7c 66 31 d2 66 f7  |`|f..uNf.\|f1.f.|
    00000120  34 88 d1 31 d2 66 f7 74  04 3b 44 08 7d 37 fe c1  |4..1.f.t.;D.}7..|
    00000130  88 c5 30 c0 c1 e8 02 08  c1 88 d0 5a 88 c6 bb 00  |..0........Z....|
    00000140  70 8e c3 31 db b8 01 02  cd 13 72 1e 8c c3 60 1e  |p..1......r...`.|
    00000150  b9 00 01 8e db 31 f6 bf  00 80 8e c6 fc f3 a5 1f  |.....1..........|
    00000160  61 ff 26 5a 7c be 80 7d  eb 03 be 8f 7d e8 34 00  |a.&Z|..}....}.4.|
    00000170  be 94 7d e8 2e 00 cd 18  eb fe 47 52 55 42 20 00  |..}.......GRUB .|
    00000180  47 65 6f 6d 00 48 61 72  64 20 44 69 73 6b 00 52  |Geom.Hard Disk.R|
    00000190  65 61 64 00 20 45 72 72  6f 72 0d 0a 00 bb 01 00  |ead. Error......|
    000001a0  b4 0e cd 10 ac 3c 00 75  f4 c3 00 00 00 00 00 00  |.....<.u........|
    000001b0  00 00 00 00 00 00 00 00  f0 03 0f 00 00 00 80 20  |............... |
    000001c0  21 00 83 dd 1e 3f 00 08  00 00 00 a0 0f 00 00 dd  |!....?..........|
    000001d0  1f 3f 8e fe ff ff 00 a8  0f 00 00 58 70 02 00 00  |.?.........Xp...|
    000001e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    *
    00000200

3、没有55 aa标志，系统就无法再识别硬盘分区表

[root@localhost ~]# fdisk -l /dev/sda
    
    Disk /dev/sda: 21.5 GB, 21474836480 bytes, 41943040 sectors
    Units = sectors of 1 * 512 = 512 bytes
    Sector size (logical/physical): 512 bytes / 512 bytes
    I/O size (minimum/optimal): 512 bytes / 512 bytes
    
    [root@localhost ~]#

内存分区表暂时还存在（真正生效的），断电就丢失

[root@localhost ~]# lsblk 
    NAME            MAJ:MIN RM  SIZE RO TYPE MOUNTPOINT
    sda               8:0    0   20G  0 disk 
    ├─sda1            8:1    0  500M  0 part /boot
    └─sda2            8:2    0 19.5G  0 part 
      ├─centos-root 253:0    0 18.5G  0 lvm  /
      └─centos-swap 253:1    0    1G  0 lvm  [SWAP]
    sr0              11:0    1    4G  0 rom  /mnt

4、dd恢复，if=/tmp/dpt（上面备份的文件）、of=/dev/sda（恢复到sda）、count=2（改变2个字节）、skip=64（因为只删除了55 aa，刚才备份总文件是66字节，所以跳过前面64字节，只取后面两个字节）、seek=510（因为/dev/sda只修改了后面55 aa两个字节，所以跳过前面的510字节，把备份的文件只恢复后面改变的两个字节）

[root@localhost ~]# dd if=/tmp/dpt  of=/dev/sda bs=1 count=2 skip=64 seek=510
    2+0 records in
    2+0 records out
    2 bytes (2 B) copied, 0.000136009 s, 14.7 kB/s

查看已经恢复

### 四、案例2（整个分区表清零，并重启。前提备份文件已经放到其他主机） ###

1、seek=446（跳过/dev/sda主引导，清零分区表记录）、count=64（分区表64位字节）

[root@localhost ~]# dd if=/dev/zero of=/dev/sda bs=1 count=64 seek=446
    64+0 records in
    64+0 records out
    64 bytes (64 B) copied, 0.00020401 s, 314 kB/s

查看分区表64字节全名为0

[root@localhost ~]# hexdump -Cv -n 512 /dev/sda
    00000000  eb 63 90 10 8e d0 bc 00  b0 b8 00 00 8e d8 8e c0  |.c..............|
    00000010  fb be 00 7c bf 00 06 b9  00 02 f3 a4 ea 21 06 00  |...|.........!..|
    00000020  00 be be 07 38 04 75 0b  83 c6 10 81 fe fe 07 75  |....8.u........u|
    00000030  f3 eb 16 b4 02 b0 01 bb  00 7c b2 80 8a 74 01 8b  |.........|...t..|
    00000040  4c 02 cd 13 ea 00 7c 00  00 eb fe 00 00 00 00 00  |L.....|.........|
    00000050  00 00 00 00 00 00 00 00  00 00 00 80 01 00 00 00  |................|
    00000060  00 00 00 00 ff fa 90 90  f6 c2 80 74 05 f6 c2 70  |...........t...p|
    00000070  74 02 b2 80 ea 79 7c 00  00 31 c0 8e d8 8e d0 bc  |t....y|..1......|
    00000080  00 20 fb a0 64 7c 3c ff  74 02 88 c2 52 be 05 7c  |. ..d|<.t...R..||
    00000090  b4 41 bb aa 55 cd 13 5a  52 72 3d 81 fb 55 aa 75  |.A..U..ZRr=..U.u|
    000000a0  37 83 e1 01 74 32 31 c0  89 44 04 40 88 44 ff 89  |7...t21..D.@.D..|
    000000b0  44 02 c7 04 10 00 66 8b  1e 5c 7c 66 89 5c 08 66  |D.....f..\|f.\.f|
    000000c0  8b 1e 60 7c 66 89 5c 0c  c7 44 06 00 70 b4 42 cd  |..`|f.\..D..p.B.|
    000000d0  13 72 05 bb 00 70 eb 76  b4 08 cd 13 73 0d 5a 84  |.r...p.v....s.Z.|
    000000e0  d2 0f 83 de 00 be 85 7d  e9 82 00 66 0f b6 c6 88  |.......}...f....|
    000000f0  64 ff 40 66 89 44 04 0f  b6 d1 c1 e2 02 88 e8 88  |d.@f.D..........|
    00000100  f4 40 89 44 08 0f b6 c2  c0 e8 02 66 89 04 66 a1  |.@.D.......f..f.|
    00000110  60 7c 66 09 c0 75 4e 66  a1 5c 7c 66 31 d2 66 f7  |`|f..uNf.\|f1.f.|
    00000120  34 88 d1 31 d2 66 f7 74  04 3b 44 08 7d 37 fe c1  |4..1.f.t.;D.}7..|
    00000130  88 c5 30 c0 c1 e8 02 08  c1 88 d0 5a 88 c6 bb 00  |..0........Z....|
    00000140  70 8e c3 31 db b8 01 02  cd 13 72 1e 8c c3 60 1e  |p..1......r...`.|
    00000150  b9 00 01 8e db 31 f6 bf  00 80 8e c6 fc f3 a5 1f  |.....1..........|
    00000160  61 ff 26 5a 7c be 80 7d  eb 03 be 8f 7d e8 34 00  |a.&Z|..}....}.4.|
    00000170  be 94 7d e8 2e 00 cd 18  eb fe 47 52 55 42 20 00  |..}.......GRUB .|
    00000180  47 65 6f 6d 00 48 61 72  64 20 44 69 73 6b 00 52  |Geom.Hard Disk.R|
    00000190  65 61 64 00 20 45 72 72  6f 72 0d 0a 00 bb 01 00  |ead. Error......|
    000001a0  b4 0e cd 10 ac 3c 00 75  f4 c3 00 00 00 00 00 00  |.....<.u........|
    000001b0  00 00 00 00 00 00 00 00  f0 03 0f 00 00 00 00 00  |................|
    000001c0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    000001d0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    000001e0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00  |................|
    000001f0  00 00 00 00 00 00 00 00  00 00 00 00 00 00 55 aa  |..............U.|
    00000200

2、挂载光盘，主机重启之后按Esc进入救援模式，选择CD

![20190925230501549.png][]

3、第三项

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 1][]

4、第二项

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 2][]

5、输入数字1回车，再回车进入shell

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 3][]

6、使用df已经查看不到硬盘的分区，这里使用ifconfig命令临时配置一个跟之前备份文件的主机互通的IP地址（本机原来的IP就是：192.168.78.131/24），方便拷贝文件

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 4][]

7、使用scp从192.168.78.133拷贝备份好的文件到本地，输入yes，输入78.133登录密码

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 5][]

8、恢复

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 6][]

9、查看，已经恢复正常

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 7][]

10、输入sync，强制缓冲区内容写到磁盘，可以多输入几次，然后稍等一会再重启主机

![2019092523272032.png][]

11、主机可以正常启动并登录

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 8][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20190925211242220.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv,size_16,color_FFFFFF,t_70
[20190925230501549.png]: https://img-blog.csdnimg.cn/20190925230501549.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20190925230617532.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20190925230650388.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20190925230935598.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20190925231231579.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 5]: https://img-blog.csdnimg.cn/20190925231803194.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 6]: https://img-blog.csdnimg.cn/20190925232324312.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 7]: https://img-blog.csdnimg.cn/20190925232459222.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv,size_16,color_FFFFFF,t_70
[2019092523272032.png]: https://img-blog.csdnimg.cn/2019092523272032.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv_size_16_color_FFFFFF_t_70 8]: https://img-blog.csdnimg.cn/20190925232920260.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3RsYWRhZ2lv,size_16,color_FFFFFF,t_70