我的 grub 分区已损坏，我已经尝试修复它几个小时了。现在它是空的，刚刚格式化。
该设备上的分区按其在磁盘上的顺序排列如下：
/dev/sda2（24MB，曾经是grub分区）/dev/sda1（350 GB，Ubuntu 18.04 LTS）/dev/sda3（70 GB，Arch Linux）
我已经从我的 Kubuntu Live USB 运行启动修复。它最后说
An error occurred during the repair.
这是引导修复的完整错误报告： http://paste.ubuntu.com/p/GTzXgC5Ngw
上述全文错误：
ADDITIONAL INFORMATION :
=================== log of boot-repair 20190414_0811 ===================
boot-repair version : 4ppa65
boot-sav version : 4ppa65
boot-sav-extra version : 4ppa65
glade2script version : 3.2.3~ppa4
grub-probe: error: cannot find a GRUB drive for /dev/sdb1. Check your device.map.
Warning: The driver descriptor says the physical block size is 2048 bytes, but Linux says it is 512 bytes.
boot-repair is executed in live-session (Ubuntu 18.04.2 LTS, bionic, Ubuntu, x86_64)
CPU op-mode(s): 32-bit, 64-bit
file=/cdrom/preseed/kubuntu.seed boot=casper maybe-ubiquity initrd=/casper/initrd quiet splash --- maybe-ubiquity
ls: cannot access '/home/usr/.config': No such file or directory
和：
=================== User settings
The settings chosen by the user will reinstall the grub2 of sda1 into the MBR of sda.
Additional repair will be performed: unhide-bootmenu-10s
Unhide GRUB boot menu in sda1/etc/default/grub
Unhide GRUB boot menu in sda2/etc/default/grub
lspci: Unable to load libkmod resources: error -12
每次我重新启动计算机后，它都会启动到黑屏，并显示“未找到操作系统”。我使用的是老式索尼 VAIO（BIOS 系统）。