昨天晚上弄砖了 拆机又拆不开

楼主   我卡在这了mount /dev/sdb1 /mnt/usb
一直提示设备繁忙
mount: mounting /dev/sdb1 on /mnt/usb failed: Device or resource busy

mnt/root/boot # cd /umount /mnt/root /mnt/usb
bin/ash: cd: can't cd to /umount
mnt/root/boot #
到这卡住了  
自己在根目录创建了一个umount 后 可执行
但是重启的时候拔掉U盘 开机 cloud 一直红灯闪   ping不通   在路由器里面看不到 新的MAC 和IP

/ # parted /dev/sda
GNU Parted 3.1
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) rm 1
rm 1
(parted) rm 2
rm 2
(parted) rm 3
rm 3
(parted) rm 4
rm 4
(parted) rm 5
rm 5
(parted) rm 6
rm 6
(parted) rm 7
rm 7
(parted) q
q
Information: You may need to update /etc/fstab.

/ # parted -l
Model: ATA WDC WD60EFRX-68L (scsi)
Disk /dev/sda: 6001GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number  Start  End  Size  File system  Name  Flags


Model: General USB Flash Disk (scsi)
Disk /dev/sdb: 16.0GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number  Start   End     Size    Type     File system  Flags
1      1049kB  16.0GB  16.0GB  primary  fat32        boot, lba


/ # parted /dev/sda
GNU Parted 3.1
Using /dev/sda
Welcome to GNU Parted! Type 'help' to view a list of commands.
(parted) mklabel gpt
mklabel gpt
Warning: The existing disk label on /dev/sda will be destroyed and all data on
this disk will be lost. Do you want to continue?
Yes/No? y
y
(parted) mkpart primary 1049kB 2149MB
mkpart primary 1049kB 2149MB
(parted) mkpart primary 8591MB -1MB
mkpart primary 8591MB -1MB
(parted) mkpart primary 7517MB 8591MB
mkpart primary 7517MB 8591MB
(parted) mkpart primary 2149MB 3222MB
mkpart primary 2149MB 3222MB
(parted) mkpart primary 3222MB 4296MB
mkpart primary 3222MB 4296MB
(parted) mkpart primary 4296MB 6443MB
mkpart primary 4296MB 6443MB
(parted) mkpart primary 6443MB 7517MB
mkpart primary 6443MB 7517MB
(parted) q
q
Information: You may need to update /etc/fstab.

/ # parted -ls
Model: ATA WDC WD60EFRX-68L (scsi)
Disk /dev/sda: 6001GB
Sector size (logical/physical): 512B/4096B
Partition Table: gpt
Disk Flags:

Number  Start   End     Size    File system     Name     Flags
1      1049kB  2149MB  2147MB  linux-swap(v1)  primary
4      2149MB  3222MB  1074MB                  primary
5      3222MB  4296MB  1074MB                  primary
6      4296MB  6443MB  2147MB                  primary
7      6443MB  7517MB  1074MB  ext4            primary
3      7517MB  8591MB  1074MB  ext4            primary
2      8591MB  6001GB  5993GB  ext4            primary


Model: General USB Flash Disk (scsi)
Disk /dev/sdb: 16.0GB
Sector size (logical/physical): 512B/512B
Partition Table: msdos
Disk Flags:

Number  Start   End     Size    Type     File system  Flags
1      1049kB  16.0GB  16.0GB  primary  fat32        boot, lba


/ # mkswap /dev/sda1
Setting up swapspace version 1, size = 2147479552 bytes
UUID=9120ec43-0d25-41d6-ba54-3b552f18a68d
/ # mkfs.ext4 /dev/sda3
mke2fs 1.42.13 (17-May-2015)
/dev/sda3 contains a ext4 file system
        last mounted on /mnt/root on Wed Oct 16 01:35:28 2002
Proceed anyway? (y,n) y
Creating filesystem with 262144 4k blocks and 65536 inodes
Filesystem UUID: f5ce079c-d2e1-447f-8c51-d5579fdf5627
Superblock backups stored on blocks:
        32768, 98304, 163840, 229376

Allocating group tables: done
Writing inode tables: done
Creating journal (8192 blocks): done
Writing superblocks and filesystem accounting information: done

/ # mkdir -p /mnt/usb /mnt/root
/ # mount /dev/sda3 /mnt/root
/ # mount /dev/sdb1 /mnt/usb
/ # cp -r /mnt/usb/boot /mnt/root/
/ # cd /mnt/root/boot
/mnt/root/boot # rm uImage uRamdisk
/mnt/root/boot # mv uImage-wdrecovery uImage
/mnt/root/boot # mv uRamdisk-wdrecovery uRamdisk
/mnt/root/boot # sync
/mnt/root/boot # cd
/ # ls
bin         init        libexec     media       proc        sbin        usr
dev         lib         linuxrc     mnt         root        sys         var
etc         lib32       lost+found  opt         run         tmp
/ # reboot -f

reboot -f 的时候拔不拔掉U盘呢  是先拔掉在输入命令 还是输入命令在拔掉

搞定了  按照教程  来的 但是命令有的串行了    下面的是正确的  建议 重启之后找个IP扫描器去扫新的IP
mkdir -p /mnt/usb /mnt/root
mount /dev/sda3 /mnt/root
mount /dev/sdb1 /mnt/usb
cp -r /mnt/usb/boot /mnt/root/
cd /mnt/root/boot
rm uImage uRamdisk
mv uImage-wdrecovery uImage
mv uRamdisk-wdrecovery uRamdisk
cd /
umount /mnt/root /mnt/usb
sync
reboot -f

支持，感谢分享

准备入手my cloud，先来学习

学习下.............

正好需要这些东西