yum have "is a duplicate with " message

執行 yum update 時出現 "is a duplicate"訊息

 

System notify you can try to run some command , but not effective.

   # yum-complete-transaction (再執行yum update後仍 無效  )

   # yum-complete-transaction --cleanup-only  (再執行yum update後仍 無效  )

Solve the problem method

List duplicate packages

# package-cleanup –dupes

Delete duplicate packages

# package-cleanup --cleandupes

CentOS on Hyper-V boot miss shim.efi

1. 載入CentOS 7 iso  , 從光碟開機
2. 選擇 Troubleshooting 
3. 選擇 Rescue
4. 選擇1 continue
5. 輸入 return 進入 shell 模式
6. 輸入 chroot /mnt/sysimage
7. 輸入 efibootmgr --create --label CentOS --disk /dev/sda1 --loader "\EFI\centos\shim.efi"