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This post wont be organized, in a real panic, promise to rewrite it tomorrow. Have a samsung laptop, installed Linux Ubuntu latest version dual boot with windows. I remember that i read a comment about the csm/uefi option, followed the tutorial, cant remember what option i chose back then. My battery died, and when it happens it always changes the "csm/uefi option". i changed it to CSM, used Linux for a couple of days. Tried accessing windows, it just loaded infinitely, tried accessing the volume in Linux gave an error message

"Error mounting /dev/sda2 at /media/jonathan/309A81959A81586C: Command-line `mount -t "ntfs" -o "uhelper=udisks2,nodev,nosuid,uid=1000,gid=1000" "/dev/sda2" "/media/jonathan/309A81959A81586C"' exited with non-zero exit status 14: The disk contains an unclean file system (0, 0).
Metadata kept in Windows cache, refused to mount.
Failed to mount '/dev/sda2': Operation not permitted
The NTFS partition is in an unsafe state. Please resume and shutdown
Windows fully (no hibernation or fast restarting), or mount the volume
read-only with the 'ro' mount option." 

Tried changing back to uefi mode but right after restarting theres a black screen with white text saying "all boot options are tried, press f4 to reset factory settings" (something like that)

it only start with uefi and csm // csm and only linux.

I have unbacked 23 year worth of family pictures there... please help

  • Did you try mounting the volume read-only? If you can mount it that way, do you have a USB/writeable CDROM to immediately back up your files? (They are probably OK, don't panic.) – ubfan1 May 10 '18 at 21:15
  • mounted right now, it let me open the files (THANX A LOT) problem though is that there is like 300 GB of photos, no solution other than copy them all? (btw, can i shut down my pc so i can go buy an external harddrive in the meantime?) – Jonathan May 10 '18 at 21:22
  • You should be able to shutdown without problem. Other solutions are possible, but who knows what damage a typo may cause -- backup your files first is the safest approach. More information would be useful, like which Ubuntu, which Windows, disk partitioning type (DOS or GPT) for any recommendation on the fix. – ubfan1 May 10 '18 at 21:32
  • May be best to see details, you can run from your Ubuntu live installer or any working install, use ppa version not older Boot-Repair ISO: Post the link to the Create BootInfo summary report. Is part of Boot-Repair: help.ubuntu.com/community/Boot-Info and: sourceforge.net/p/boot-repair/home/Home – oldfred May 10 '18 at 21:49

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