[ubuntu] Can't boot into Ubuntu 14.10 topic

Hey guys, so I've been unable to boot into Ubuntu 14.10 lately - when I try to boot, it gives me the following error message:

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Target file system doesn't have /sbin/init
No init found. Try passing init= bootarg

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So I boot into bootable USB with Ubuntu and perform fdisk -l, and this is the output:

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Device Boot Start End Blocks Id System
/dev/sda1 * 2048 206847 102400 7 HPFS/NTFS/exFAT
/dev/sda2 116576254 362338303 122881025 5 Extended
Partition 2 does not start on physical sector boundary.
/dev/sda3 20998144 116574207 47788032 7 HPFS/NTFS/exFAT
/dev/sda4 362338304 976773167 307217432 7 HPFS/NTFS/exFAT
/dev/sda5 116576256 120479743 1951744 82 Linux swap / Solaris
/dev/sda6 120481792 362338303 120928256 83 Linux

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I then tried the following command:

sudo e2fsck -f -y -v /dev/sda6

which performed and fixed many errors (after pressing 'y' many times), though didn't really make Ubuntu boot. I realize that maybe I have to fix the /dev/sda1 partition somehow (since it is the boot partition), but I am unable to do it under bootable usb (because it is NTFS, and fsck won't work), and I don't know the workaround for this.

I am using dual boot with Windows 7 and Ubuntu 14.10.

Any help appreciated! This problem is really frustrating.