1.修改Ramdisk文件夹中的update.sh:

/sbin/fdisk /dev/mmcblk0 << EOF

d

2

n

p

2

172416

w

EOF

为：

/sbin/fdisk /dev/mmcblk0 << EOF

d

2

n

p

2

172416

14897471

w

EOF

注：其中172416为起始sector，14897471为结束sector，当输入回车时，是默认值（最大值）。

2.编译后把ramdisk.img.gz放到烧写sd卡中进行烧写。

3.烧录完成，启动系统，用fdisk重新分区

root@ok6254:~# fdisk /dev/mmcblk0

Command (m for help): n

Partition type

   p   primary (2 primary, 0 extended, 2 free)

   e   extended (container for logical partitions)

Select (default p): p

Partition number (3,4, default 3): 3

First sector (14897472-15269887, default 14899200): （回车）

Last sector, +/-sectors or +/-size{K,M,G,T,P} (14899200-15269887, default 15269887): （回车）

Created a new partition 3 of type 'Linux' and of size 181 MiB.

Command (m for help): w

The partition table has been altered.

Syncing disks.

root@ok6254:~# mkfs.ext4 /dev/mmcblk0p3

mke2fs 1.45.7 (28-Jan-2021)

Discarding device blocks: done                            

Creating filesystem with 185344 1k blocks and 46368 inodes

Filesystem UUID: 022088fc-b884-456b-af55-f601fbd15a7f

Superblock backups stored on blocks:

8193, 24577, 40961, 57345, 73729

Allocating group tables: done                            

Writing inode tables: done                            

Creating journal (4096 blocks): done

Writing superblocks and filesystem accounting information: done

root@ok6254:~# mkdir /run/media/mmcblk0p3/

root@ok6254:~# mount /dev/mmcblk0p3 /run/media/mmcblk0p3