飞牛最新系统外接硬盘会导致docker，内置程序，影视等应用无法对其读写，只有读取权限（也就是默认755权限）

解决方法：

1，飞牛开启SSH

2，登录飞牛SSH

3，输入命令

df

3-1，得到硬盘分区挂载信息（参考）

admin@Lee:~$ df
Filesystem                                               1K-blocks      Used  Available Use% Mounted on
udev                                                       3982896         0    3982896   0% /dev
tmpfs                                                       805568     11260     794308   2% /run
/dev/sda2                                                 30691172  10235756   18871032  36% /
tmpfs                                                      4027820      3528    4024292   1% /dev/shm
tmpfs                                                         5120         0       5120   0% /run/lock
efivarfs                                                       128        43         81  35% /sys/firmware/efi/efivars
/dev/sda1                                                    94772      8206      86566   9% /boot/efi
/dev/sdd1                                               2930173952 768083456 2162090496  27% /vol00/ST3000DM001-1CH166
trimafs                                                  488251392 396231640   91139432  82% /fs
/dev/mapper/trim_5b4a630c_0875_413f_96fd_d5e635595e38-0  488251392 396231640   91139432  82% /vol2
/dev/mapper/trim_f6a6500b_51a5_492d_b2d3_de0132f2b026-0   27136000  13167360   13597936  50% /vol1
overlay                                                   27136000  13167360   13597936  50% /vol1/docker/overlay2/b7d4131a5a42e5d9f7db47772bedaf482def0ca04e0091e4acf0142f50cbd7fc/merged
tmpfs                                                       805564         0     805564   0% /run/user/1000
admin@Lee:~$

这里很明显我的外接硬盘分区是：/dev/sdd1，挂载到：/vol00/ST3000DM001-1CH166（vol00都是外接硬盘）

4，输入命令

sudo blkid

4-1，提示输入管理员密码，得到硬盘UUID信息（参考）

admin@Lee:~$ sudo blkid
[sudo] password for admin:
/dev/mapper/trim_5b4a630c_0875_413f_96fd_d5e635595e38-0: UUID="1d4d00d4-4c9f-49aa-97ae-150213dc0995" UUID_SUB="d946f5b0-6d1f-438f-a066-308852dfdea0" B                  LOCK_SIZE="4096" TYPE="btrfs"
/dev/sdd1: UUID="78DF-7B47" BLOCK_SIZE="512" TYPE="exfat" PTTYPE="dos" PARTLABEL="primary" PARTUUID="248c6e8a-8d02-4e25-b838-9f16ae01418e"
/dev/sdb1: UUID="2f4e5868-9dc7-9272-7450-3704327302a0" UUID_SUB="5fe3be95-ddf8-85f6-0215-14b699bc542c" LABEL="Lee:1" TYPE="linux_raid_member" PARTLABE                  L="primary" PARTUUID="a95b3e37-e00a-4229-bfba-c4a9d2743861"
/dev/md0: UUID="Cx0GjJ-Dsys-E1LF-260A-9dSv-rEQE-vON7hu" TYPE="LVM2_member"
/dev/mapper/trim_f6a6500b_51a5_492d_b2d3_de0132f2b026-0: UUID="3b34e6cc-d4c8-429f-94b9-6335a5a41f26" UUID_SUB="4ffbbb3d-17f1-4fd7-bd2d-6c775c8fb18b" B                  LOCK_SIZE="4096" TYPE="btrfs"
/dev/sdc1: UUID="2f4e5868-9dc7-9272-7450-3704327302a0" UUID_SUB="87fc06bf-bccb-fd0c-6e46-69cbc995fdbf" LABEL="Lee:1" TYPE="linux_raid_member" PARTLABE                  L="primary" PARTUUID="58fb9bc6-ca90-4441-840c-fa8ca84c5423"
/dev/sda2: UUID="14c51a61-a514-40fe-b171-5914d2131e2f" BLOCK_SIZE="4096" TYPE="ext4" PARTLABEL="SYSTEM" PARTUUID="2a1c9451-5a33-4e49-ad71-f8d9f0b43d5f                  "
/dev/sda3: UUID="4027f5a6-0775-65b6-e2e5-c379517bac0e" UUID_SUB="7c171524-cb2f-10e8-dff8-7fa533a43111" LABEL="Lee:0" TYPE="linux_raid_member" PARTLABE                  L="primary" PARTUUID="6fcec64a-a7e0-41c6-b373-ee5a7507f9c0"
/dev/sda1: UUID="68DC-2897" BLOCK_SIZE="512" TYPE="vfat" PARTLABEL="BOOT" PARTUUID="24c30f92-4157-4c7a-a0ce-70f0035d5af5"
/dev/md1: UUID="2gmAOZ-tSJ0-MLpG-3mCB-HsVG-qR0u-baPyvb" TYPE="LVM2_member"
admin@Lee:~$

很明显，我的外接硬盘：/dev/sdd1，UUID是：78DF-7B47，记住这个UUID

下面这行，编辑UUID和后面的挂载路径为上面获取的（硬盘是exfat格式）

UUID=78DF-7B47 /vol00/ST3000DM001-1CH166 exfat defaults,nofail,umask=0000 0 0

5，输入命令

sudo nano /etc/fstab

5-1，提示输入管理员密码，光标移动到最下面一行的空白处，按Ctrl+U，粘贴上面修改好的内容（参考）

admin@Lee:~$ sudo nano /etc/fstab
  GNU nano 7.2                                                                   /etc/fstab
UUID=14c51a61-a514-40fe-b171-5914d2131e2f / ext4 errors=remount-ro 0 1
/swapfile none swap sw 0 0
UUID=68DC-2897 /boot/efi vfat umask=0077 0 1
UUID=78DF-7B47 /vol00/ST3000DM001-1CH166 exfat defaults,nofail,umask=0000 0 0

5-2，按Ctrl+X，按Y保存

5-3，重启飞牛

应用可对外接硬盘读写操作，问题解决