我决定将 Ubuntu 16.04 从 HHD (sdb) 移至 SSD (sda)。在 live-usb 中启动，复制 /media，在 fstab 中更新 UUID。
下一步是让 GRUB 在 SSD 上运行，因此我尝试在 live-usb 中安装 GRUB。尽管最后显示“安装完成。未报告任何错误。”当我从 SSD 磁盘在 BIOS 中启动计算机时，它仍然要求提供可启动磁盘。
复制的 /media 有 grub 2.something
mint@mint ~ $ sudo grub-install --root-directory=/media/mint/SSD1 /dev/sda
grub-probe: error: failed to get canonical path of `/cow'.
Installing for i386-pc platform.
grub-install.real: warning: Sector 32 is already in use by the program `FlexNet'; avoiding it. This software may cause boot or other problems in future. Please ask its authors not to store data in the boot track.
Installation finished. No error reported.
sudo fdisk -l
Disk /dev/sda: 128.0 GB, 128035676160 bytes
255 heads, 63 sectors/track, 15566 cylinders, total 250069680 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x73b46703
Device Boot Start End Blocks Id System
/dev/sda1 2048 233066495 116532224 83 Linux
/dev/sda2 233066496 250068991 8501248 82 Linux swap / Solaris
Disk /dev/sdb: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xbbc58b91
Device Boot Start End Blocks Id System
/dev/sdb1 2048 318919887 159458920 7 HPFS/NTFS/exFAT
/dev/sdb2 318920702 976771071 328925185 5 Extended
/dev/sdb5 960151552 976771071 8309760 82 Linux swap / Solaris
/dev/sdb6 318920704 960151551 320615424 83 Linux
Partition table entries are not in disk order
答案1
使用以下针对 Ubuntu 16.04 的代码解决了这个问题，如下所述这里
mount /dev/sda1 /mnt
for dir in /dev /dev/pts /proc /sys /run; do
mount --bind $dir /mnt$dir
done
chroot /mnt
update-grub2