未應用 GRUB 更改

我正在嘗試隱藏 Linux Mint 19 Cinnamon 上的 GRUB 菜單。

我使用並輸入了我的管理員密碼兩次編輯了 grub 文件

gedit admin:///etc/default/grub

然後我編輯了我的 grub 文件，如下所示：

# If you change this file, run 'update-grub' afterwards to update
# /boot/grub/grub.cfg.
# For full documentation of the options in this file, see:
#   info -f grub -n 'Simple configuration'

GRUB_TIMEOUT_STYLE=hidden
GRUB_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT=0
GRUB_HIDDEN_TIMEOUT_QUIET=true
GRUB_DEFAULT=0
GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian`
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
GRUB_CMDLINE_LINUX=""

# Uncomment to enable BadRAM filtering, modify to suit your needs
# This works with Linux (no patch required) and with any kernel that obtains
# the memory map information from GRUB (GNU Mach, kernel of FreeBSD ...)
#GRUB_BADRAM="0x01234567,0xfefefefe,0x89abcdef,0xefefefef"

# Uncomment to disable graphical terminal (grub-pc only)
GRUB_TERMINAL=console

# The resolution used on graphical terminal
# note that you can use only modes which your graphic card supports via VBE
# you can see them in real GRUB with the command `vbeinfo'
#GRUB_GFXMODE=640x480

# Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux
#GRUB_DISABLE_LINUX_UUID=true

# Uncomment to disable generation of recovery mode menu entries
#GRUB_DISABLE_RECOVERY="true"

# Uncomment to get a beep at grub start
#GRUB_INIT_TUNE="480 440 1"

更改後，我更新了 GRUB

sudo update-grub

當我重新啟動 PC 時，我仍然會看到帶有 30 秒計時器的 GRUB 菜單。我錯過了一些條目還是還有其他需要編輯的文件？

您應該GRUB_RECORDFAIL_TIMEOUT=0在/etc/default/grubthen run中設置update-grub。

info -f grub -n 'Simple configuration' | less  -p 'GRUB_RECORDFAIL_TIMEOUT'

'GRUB_RECORDFAIL_TIMEOUT'

If this option is set, it overrides the default recordfail setting.
 A setting of -1 causes GRUB to wait for user input indefinitely.
 However, a false positive in the recordfail mechanism may occur if
 power is lost during boot before boot success is recorded in
 userspace.  The default setting is 30, which causes GRUB to wait
 for user input for thirty seconds before continuing.  This default
 allows interactive users the opportunity to switch to a different,
 working kernel, while avoiding a false positive causing the boot to
 block indefinitely on headless and appliance systems where access
 to a console is restricted or limited.

引用自：https://unix.stackexchange.com/questions/508155