Re: f24 boot fails; need help.

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On Wed, 17 May 2017 18:18:38 -0000
"William Mattison" <mattison.computer@xxxxxxxxx> wrote:

> Finally, I hope, a few useful clues.  Rescue mode gave me enough
> information to make a lucky guess as to how to mount "/home" from
> within the dracut shell.  

It isn't home you want to mount, it's /, the root filesystem.  One of
my earlier emails had instructions on how to create symlink to that
partition, and then exit from dracut shell to reboot.  Given the rest
of your information, it seems you have a corrupted root filesystem on
the hard drive, so it probably wouldn't have worked.

[snip]
 
> Disk /dev/sda: 1.8 TiB, 2000398934016 bytes, 3907029168 sectors
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 4096 bytes
> I/O size (minimum/optimal): 4096 bytes / 4096 bytes
> Disklabel type: dos
> Disk identifier: 0xfde8da65
> 
> Device     Boot      Start        End    Sectors   Size Id Type
> /dev/sda1  *          2048     206847     204800   100M  7
> HPFS/NTFS/exFAT
> /dev/sda2           206848 1859026943 1858820096 886.4G  7 HPFS/NTFS/exFAT
> /dev/sda3       1859026944 1860050943    1024000   500M 83 Linux
> /dev/sda4       1860050944 3907029167 2046978224 976.1G  5 Extended
> /dev/sda5       1860052992 1876436991   16384000   7.8G 82 Linux swap / Solaris
> /dev/sda6       1876439040 1981296639  104857600    50G 83 Linux
> /dev/sda7       1981298688 3907028991 1925730304 918.3G 83 Linux


> I will re-study what everyone has posted.  My non-sys.admin. gut
> tells me to not try any real fixes without first getting confirmation
> here.  Otherwise, I could easily make things worse.

We could be wrong, but when it matters like this it is certainly better
to have more sets of eyes look at things.

>From rescue mode, you need to run e2fsck (I'm assuming that the
filesystems are one of ext[2, 3, 4].  If that isn't what lsblk shows,
then you will have to use the appropriate tool for the filesystem you
have.  I think you want to use the -c and -v options to do a non
destructive check first to see if there is anything wrong. You could
look at the -k option, and the -c -c option, the -b option, and when
you are ready to fix the filesystem, the -p option and possibly -y
option.
e.g. e2fsck -c -v /dev/sda6  from the rescue boot to check for errors.
e2fsck -p -y /dev/sda6 to automatically fix any errors on the device.

It's possible that the drive is bad, and this should tell you that.

The time problem suggests that the little pancake battery on the MB that
maintains the clock might be out of juice.  I think these are 2032
style for PCs.  It would be a good idea to replace it.
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