Linux Black Screen After Migrate From Citrix To ACloud

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Issue Description

Centos migrated from Citrix to aCloud, when booting the VM, it shows a black screen with blinking underscore.
Remark: This guide is to solve the VM migrates from Citrix, if migrating from another platform also facing black screen issue, you can refer to this, but the issue might be not the same.

Handling Process

1. Mount a CentOS installation ISO disk to the virtual machine.
2. Select boot from disk, and enter to rescue installed system.
3. Follow the instruction to configure keymap.
4. This step will require you to switch the root partition.
5.  Select start shell and it will automatically mount the VM disk to the system partition.
Remark: If the VM OS disk is mounted you can go to step 7. Else, you have to manually mount the VM OS disk.
Example command: “mount /dev/sda1 /mnt/sysimage/“.
7. Go to boot directory and modify grub.conf.
Use “cd” command and access to “/mnt/sysimage/boot”, find a file name “grub.conf”, edit the file and delete “console=hvc0” .

Solution

Change grub.conf, remove console=hvc0 or change it to console=ttyS0
Faisal Lv8Posted 26 Aug 2020 08:24
  
Thank you very much for the information ...
Faisal Lv8Posted 15 Oct 2020 13:06
  
Nice article ...
Faisal Lv8Posted 24 Dec 2020 07:34
  
Great Info ...
Ellechar Lv4Posted 18 Jan 2021 09:24
  
Very nice infoooooooooooooooooooooooo
Faisal Lv8Posted 25 Mar 2021 07:17
  
Very informative …
Faisal Lv8Posted 10 Jun 2021 08:55
  
Nice guidance ...

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Doc ID: 2283
Author: GodLike
Updated: 2019-12-20 10:16
Version: