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$ [command]#df -h#
$ [command]#su -#
`[ 170.171135] sd 5:0:0:0: [sdb] Attached SCSI removable disk`
Additionally, the [application]*kdump* crash kernel dumping mechanism reserves some memory for the secondary kernel used in case of the primary kernel crashing. This reserved memory will also not be displayed as available when using the [command]#free# command. For details about [application]*kdump* and its memory requirements, see the [citetitle]_{PRODUCT} System Administrator's Guide_, available at link:++http://docs.fedoraproject.org/++[].
After you finish the installation and reboot your system for the first time, it is possible that the system stops responding during the graphical boot sequence, requiring a reset. In this case, the boot loader is displayed successfully, but selecting any entry and attempting to boot the system results in a halt. This usually means a problem with the graphical boot sequence; to solve this issue, you must disable graphical boot. To do this, temporarily alter the setting at boot time before changing it permanently.
After you finish this procedure, you can reboot your computer. {PRODUCT} will not use the graphical boot sequence any more. If you wish to enable graphical boot, follow the same procedure, add the `rhgb` option to the `GRUB_CMDLINE_LINUX` line in the `/etc/default/grub` file and refresh the boot loader configuration again using the [command]#grub2-mkconfig# command.
After you updated the file and saved it, refresh the boot loader configuration so that the change will take effect. Run the following command with root privileges:
All of the files described in xref:Troubleshooting.adoc#sect-troubleshooting-log-files[Log Files Generated During the Installation] reside in the installation program's RAM disk, which means they are not saved permamently and will be lost once the system is powered down. To store them permanently, copy those files to another system on the network using [command]#scp# on the system running the installation program, or copy them to a mounted storage device (such as an USB flash drive). Details on how to transfer the log files are below. Note that if you use an USB flash drive or other removable media, you should make sure to back up any data on it before starting the procedure.
Are You Unable to Boot With Your RAID Card?
Before you open a new discussion or ask anyone for help on IRC, you should always do some research on your own. If you are encountering an issue, there is usually a good chance that someone else ran into the same problem before you and published a solution somewhere. Opening a discussion about something already explained elsewhere, or asking a common question which has been answered many times before, is not likely to result in a friendly, constructive response.
Booting into a Graphical Environment
Boot your system and wait until the GRUB2 menu appears.
# cd /mnt/usb
# cd /tmp
Change the default target to `graphical.target`. To do this, execute the following command:
Configuring the Memory Manually
Connect a USB flash drive to the system and execute the [command]#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:
Copy the log files onto another system on the network using the [command]#scp# command:
Copy the log files to the mounted device.
# cp /tmp/*log /mnt/usb