# How to Boot From SD Card?

**URL:** <https://forums.developer.nvidia.com/t/how-to-boot-from-sd-card/67775>\
**Category:** Jetson AGX Xavier\
**Created:** [November 26, 2018, 6:10am UTC](https://forums.developer.nvidia.com/t/how-to-boot-from-sd-card/67775 "2018-11-26T06:10:49Z")\
**Posts on this page:** 1\
**Showing post:** 17

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**Author:** ![carolyuu](https://sea2.discourse-cdn.com/nvidia/user_avatar/forums.developer.nvidia.com/carolyuu/32/14043_2.png) [@carolyuu](https://forums.developer.nvidia.com/u/carolyuu)\
**Post date:** [November 27, 2018, 8:22am UTC](https://forums.developer.nvidia.com/t/how-to-boot-from-sd-card/67775/17 "2018-11-27T08:22:03Z")

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Hi hijikata\_M,

I can boot up from SD card, list steps for you reference:

```auto
$ sudo mkfs.ext4 /dev/sd<port><device_number> #Format your device with an Ext4 file system
$ cd Linux_for_Tegra/rootfs/
$ sudo cp -a * <mntpoint> && sync
$ Unmount the disk and connect it to the target Tegra device
$ sudo ./flash.sh jetson-xavier mmcblk1p1

```

Please check your sdcard format or try to format and copy again.  
Thanks!

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