centos7.2/7.4是否能支持升级到openeuler2203sp3/sp4。
在升级系统，检查和升级都没报错，升级重启后gurb异常，无引导菜单。重启后的报错信息如下
Booting from DVD/CD… Boot failed: Could not read from CDROM (code 0003) Booting from Hard Disk… GRUB loading.. Welcome to GRUB! error: ../../grub-core/fs/fshelp.c:257:file ‘/grub2/i386-pc/normal.mod’ not found. Entering rescue mode… grub rescue>
请问这问题怎么解决。