If in a terminal you type "man fsck" you get a simple manual for the fsck command. "fsck tutorial" at the Google search prompt should yield good info soon.
If you open a terminal and do a "cd /var/log" and then an "ls -l" you will see the system log files.
A good place to poke around for hints to what is wrong.
Often people find hints looking at:
dmesg
syslog
Xorg.0.log
using such commands as:
tail dmesg #prints the last ten lines of dmesg
less dmesg #prints several lines of dmesg with response to up/down arrow to see the whole file - q to end
cat dmesg #prints the whole dmesg file to the screen all at once
In your situation I would tend to boot in to the box with a live CD - grab what was in my Desktop, Documents, Downloads(if not too large), Pictures directories (under /home/<yourUserName> - onto a flash drive or external USB drive for example) and then re-load Linux fresh. If you have a disk failing perhaps time to consider getting and using an SSD (they are wonderfully fast).
Also you might look into using Clonezilla to make bare metal backups for yourself. Saved my bottom many times working with a new SSD (many years ago) which had a bad habit of loosing it's directory structure about every 6 weeks to three months - apparently a video vs disk hardware bus conflict. Went away with a bios upgrade.
Ed Greshko ha scritto / said the following il giorno/on 25/08/2014 00:22:how do I run fsck manually?? surprised to hear that a disk may be dying as the system is six months old .....
On 08/25/14 06:10, antonio montagnani wrote:
Suddenly my laptop when rebooted doesn't start in the usual way After six months of hard work) but it stops when bootib with this message
drm:cpt-serr_int_handler ERROR PCH transcoder a FIFO underrun
and the appears some lines with request for password for maintenance mode or CTRL-D option...
If I open journalctl -xb I see some errors in particular saying that fsck failed with error code 4 on dev/mapper/fedora and suggestint to use fsck.
How do I revover from this situation?? (I am writing from this machine started with CTRL-D option)
Did you then run fsck manually? Error code 4 means ... "Filesystem errors left uncorrected". Sounds like a disk may be dying.
The PCH transcoder error, on googling, seems to be related to Intel graphics and not a fatal error.
--
Antonio M
Skype: amontag52
Linux Fedora F20 (Heisenbug)
on Fujitsu Lifebook A512
http://lugsaronno.altervista.org
http://www.campingmonterosa.com
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