将Xavier系统安装到NVME M2 SSD

将Xavier系统安装到NVME M2 SSD

Xavier自身eMMC只有32G大小，实在是不够用。此方法通过挂载外部SSD作为主硬盘，可以完美解决存储空间不够的问题。
此方法经过测试，可以放心使用～
参考：https://forums.developer.nvidia.com/t/how-to-boot-from-nvme-ssd/65147/38

以下步骤请顺序执行。

On Xavier

1. Init SSD

   sudo parted /dev/nvme0n1
   

   GNU Parted 3.2
   Using /dev/nvme0n1
   Welcome to GNU Parted! Type ‘help’ to view a list of commands.

   mklabel gpt                                                      
   mkpart primary 2048s 100%
   quit
   

   Information: You may need to update /etc/fstab.

   sudo mkfs.ext4 /dev/nvme0n1p1
   

   mke2fs 1.44.1 (24-Mar-2018)
   Discarding device blocks: done
   Creating filesystem with 61049344 4k blocks and 15269888 inodes
   Filesystem UUID: 8d95140d-6dff-41bc-a270-859cc758d943
   Superblock backups stored on blocks:
   32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,
   4096000, 7962624, 11239424, 20480000, 23887872
   Allocating group tables: done
   Writing inode tables: done
   Creating journal (262144 blocks): done
   Writing superblocks and filesystem accounting information: done

2. Check device partuuid：

   sudo blkid /dev/nvme0n1p1
   

   /dev/nvme0n1p1: UUID=“8d95140d-6dff-41bc-a270-859cc758d943” TYPE=“ext4” PARTLABEL=“primary” PARTUUID=“387e69f7-3058-41ed-a17b-6def76030ac2”

3. Clone eMMC to SSD：

   sudo dd if=/dev/mmcblk0p1 of=/dev/nvme0n1p1 
   

   58720256+0 records in
   58720256+0 records out
   30064771072 bytes (30 GB, 28 GiB) copied, 488.574 s, 61.5 MB/s

On Host

1. 定位到<Your Dir>/JetPack_4.2.3_Linux_GA_JETSON_AGX_XAVIER/Linux_for_Tegra目录下，执行：

   echo '387e69f7-3058-41ed-a17b-6def76030ac2' > bootloader/l4t-rootfs-uuid.txt
   

2. 然后，同样目录下，烧录Xavier：

   sudo ./flash.sh jetson-xavier external
   

3. 烧录完成！

On Xavier

依次执行：

sudo resize2fs /dev/nvme0n1p1
sudo mount /dev/mmcblk0p1 /mnt
sudo cp -r /boot/* /mnt/

完成！

读取速度对比

eMMC

External SSD