启动 Ubuntu 时遇到问题。启动时出现 Grub，但在启动 Ubuntu 时返回此错误消息：
fra initranfs and switch to another root fs: chroot to NEW_ROOT, delete all in/, NEW-ROOT must be a mountpoint
我尝试了启动修复盘但它在启动信息摘要报告末尾返回了此错误消息：
sda1 rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,errors=remount-ro
===================== sda1/efi/ubuntu/grub.cfg (filtered) ======================
search.fs_uuid e782db0a-566b-4b1c-ac14-163d062c1a12 root hd0,gpt2
set prefix=($root)'/boot/grub'
configfile $prefix/grub.cfg
Error code 32
mount -r /dev/sda2 /mnt/boot-sav/sda2
mount -r /dev/sda2 : Error code 32
Error code 32
mount -r /dev/sda2 /mnt/boot-sav/sda2
mount -r /dev/sda2 : Error code 32
Suggested repair: ______________________________________________________________
The default repair of the Boot-Repair utility would not act on the boot.
任何关于下一步该去哪里的建议都将不胜感激！谢谢！