背景简介:
自己拿测试机升级内核后,无法正常开机出现“unable to mount root fs on unknown-block(0,0) kali”错误 # 新内核不能正常启动
尝试自己修复,并且恢复引导菜单,恢复开机默认启动,以下为研究记录
# 首先几个重要目录
/boot/grub/grub.cfg # 这个目录是开机引导选项,是通过生成的
/etc/default/grub # 文件详解 ↓
# 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_DEFAULT=0 // * 默认启动项,按menuentry顺序,从0开始;若改为saved,则默认上次启动项 #GRUB_HIDDEN_TIMEOUT=0 // - 隐藏菜单,grub2不再使 GRUB_HIDDEN_TIMEOUT_QUIET=true // - true不显示倒计时,屏幕将会是空白的;false空白屏幕上有计时器 GRUB_TIMEOUT=3 // * 设置进入默认启动项的等候时间,默认值10秒;若为-1则一直等待 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" // * 添加内核启动参数,这个为默认 GRUB_CMDLINE_LINUX="acpi_osi=Linux" // * 手动添加内核启动参数,比如 acpi=off noapic等可在这里添加 # 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 // - 设置是否使用图形介面。去除前面#,仅使用控制台终端,不使用图形介面 # 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 // * 设定图形介面分辨率,如不使用默认,把前面#去掉,分辨率按需修改 # Uncomment if you don't want GRUB to pass "root=UUID=xxx" parameter to Linux #GRUB_DISABLE_LINUX_UUID=true // - 设置grub命令是否使用UUID,去掉#,使用root=/dev/sdax而不用root=UUDI=xxx # Uncomment to disable generation of recovery mode menu entries #GRUB_DISABLE_RECOVERY="true" // - 设定是否创建修复模式菜单项 # Uncomment to get a beep at grub start #GRUB_INIT_TUNE="480 440 1"View Code
# 重新生成gurb.cfg文件
grub-install /dev/sda*(boot目录所在分区)
grub-mkconfig -o /boot/grub/grub.cfg
step.1 查看当前系统上面不能正常启动的内核
dpkg --get-selections | grep linux
step.2 根据罗列出来多余的内核(根据自己查看的情况添加)
sudo apt-get purge \ linux-headers-x.x.x-xxx \ linux-image-x.x.x-xxx-xxxx \ linux-modules-x.x.x-xxx-xxxx \ linux-modules-extra-x.x.x-xxx-xxxx
若此命令卸载失败,可尝试
sudo apt-get remove\ .............. 或sudo apt-get autoremove\ ............... 或sudo dpkg --purge\ ...............
step.3 更新grub
sudo update-grub
标签:linux,GRUB,grub,kali,xxx,gurb,内核,6.0,Uncomment From: https://www.cnblogs.com/Cong0ks/p/17545335.html