Chapter 9. Troubleshooting Installation on 64-bit AMD, Intel, and ARM Systems

Procedure 9.1. Transferring Log Files Onto a USB Drive

1. On the system you are installing, press Ctrl+Alt+F2 to access a shell prompt. You will be logged into a root account and you will have access to the installation program's temporary file system.
2. Connect a USB flash drive to the system and execute the dmesg command. A log detailing all recent events will be displayed. At the bottom of this log, you will see a set of messages caused by the USB flash drive you just connected. It will look like a set of lines similar to the following:

   [ 170.171135] sd 5:0:0:0: [sdb] Attached SCSI removable disk

   Note the name of the connected device - in the above example, it is sdb.
3. Go to the /mnt directory and once there, create new directory which will serve as the mount target for the USB drive. The name of the directory does not matter; this example uses the name usb.

   # mkdir usb

4. Mount the USB flash drive onto the newly created directory. Note that in most cases, you do not want to mount the whole drive, but a partition on it. Therefore, do not use the name sdb - use the name of the partition you want to write the log files to. In this example, the name sdb1 is used.

   # mount /dev/sdb1 /mnt/usb

   You can now verify that you mounted the correct device and partition by accessing it and listing its contents - the list should match what you expect to be on the drive.

   # cd /mnt/usb

   # ls

5. Copy the log files to the mounted device.

   # cp /tmp/*log /mnt/usb

6. Unmount the USB flash drive. If you get an error message saying that the target is busy, change your working directory to outside the mount (for example, /).

   # umount /mnt/usb

Procedure 9.2. Transferring Log Files Over the Network

1. On the system you are installing, press Ctrl+Alt+F2 to access a shell prompt. You will be logged into a root account and you will have access to the installation program's temporary file system.
2. Switch to the /tmp directory where the log files are located:

   # cd /tmp

3. Copy the log files onto another system on the network using the scp command:

   # scp *log user@address:path

   Replace user with a valid user name on the target system, address with the target system's address or host name, and path with the path to the directory you want to save the log files into. For example, if you want to log in as john to a system with an IP address of 192.168.0.122 and place the log files into the /home/john/logs/ directory on that system, the command will have the following form:

   # scp *log john@192.168.0.122:/home/john/logs/

   When connecting to the target system for the first time, the SSH client asks you to confirm that the fingerprint of the remote system is correct and that you want to continue:

   The authenticity of host '192.168.0.122 (192.168.0.122)' can't be established.
   ECDSA key fingerprint is a4:60:76:eb:b2:d0:aa:23:af:3d:59:5c:de:bb:c4:42.
   Are you sure you want to continue connecting (yes/no)?

   Type yes and press Enter to continue. Then, provide a valid password when prompted. The files will start transferring to the specified directory on the target system.