Shulou(Shulou.com)06/02 Report--

This article mainly introduces "how to move the OpenWrt system to the U disk". In the daily operation, I believe that many people have doubts about how to move the OpenWrt system to the U disk. The editor consulted all kinds of materials and sorted out a simple and easy-to-use operation method. I hope it will be helpful to answer the doubts about "how to move the OpenWrt system to the U disk". Next, please follow the editor to study!

First, the ssh login route.

First, partition the u disk

Root@OpenWrt: ~ # fdisk / dev/sda

Command (m for help): enter n # to create a new partition and enter enter

Partition type:

P primary (0 primary, 0 extended, 4 free)

E extended

Select (default p): # default primary partition, enter directly

Using default response p.

Partition number (1-4, default 1): # Zone number. By default, enter directly.

First sector (2048-8235007, default 2048): # start sector. By default, enter directly.

Last sector, + sectors or + size {KMagneMrect Greco Tpenp} (2048-8235007, default 8235007): + 1G # input + 1G enter, partition size set to 1GiB

Created a new partition 1 of type 'Linux' and of size 1 GiB.

# other partitions are similar to the above, omitted.

Command (m for help): W # press w enter to save exit

The partition table has been altered.

Calling ioctl () to re-read partition table.

Syncing disks.

II. Format the partition

Root @ OpenWrt: ~ # mkfs.ext4 / dev/sda1-O ^ has_journal,extent-L hg255d

Under the EXT4 file system, formatting with the "- O ^ hasjournal,extent" parameter can improve the performance of reading large files.

Copy all the files under the root directory "/" to the USB drive

Root @ OpenWrt: ~ # mount / dev/sda1 / mnt-t ext4 # Mount the first partition of the USB disk to / mnt

Root @ OpenWrt: create a root directory under ~ # mkdir / tmp/root # / tmp

Root @ OpenWrt: ~ # mount-o bind / / tmp/root # Mount and synchronize the system root directory "/" to / tmp/root

Root @ OpenWrt: ~ # cp-a / tmp/root/* / mnt/ # copy all files under / tmp/root to USB disk

Root @ OpenWrt: ~ # umount / tmp/root # Uninstall / tmp/root

Modify / mnt/etc/banner so that you can know if it is booted from a flash drive.

Root @ OpenWrt: ~ # vi / mnt/etc/banner

_

| |. -. | |. -. | | _

| |-| | _ | _ _ | | | _ | | _ |

| | _ | | _ _ | _ _ | | _ | | _ _ | | _ |

| | _ | W I R E L E S S F R E E D O M |

BARRIER BREAKER (Bleeding Edge, r41302)

From USB device... # added identity

* 1x2 oz Galliano Pour all ingredients into

* 4 oz cold Coffee an irish coffee mug filled

* 1 1 oz Dark Rum with crushed ice 2. Stir.

* 2 tsp. Creme de Cacao

Root @ OpenWrt: ~ # umount / dev/sda1 # Uninstall / dev/sda1

IV. Modify / etc/config/fstab configuration

The original configuration is as follows:

Config 'global' option anon_swap' 0' option anon_mount'0' option auto_swap'1' option auto_mount'1' option delay_root'5' option check_fs'0'

After modifying the configuration, it is as follows:

Config global option anon_swap'0' option anon_mount'0' option auto_swap'1' option auto_mount'1' option delay_root'5' option check_fs' 0'config mount option device'/ dev/sda2' option fstype 'ext4' option enabled' 1' option options' rw,sync' option target'/'

Restart routing

After restarting the route, ssh logs in to the route. Seeing the logo we added in the printed banner message means that the system has been moved to the flash drive.

At this point, the study on "how to move the OpenWrt system to the USB flash drive" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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