I have just installed Ubuntu 13.04, yet I had problems getting into any of the systems after installation [I had Windows 7 installed before].
The problem is, that after installation and restart, I didn't get the option to boot Ubuntu, only previous Windows Vista [which I replaced with Ubuntu] and Windows 7. I was trying to repair the boot option via Windows's EasyBSD or whatever was it called, then after restart, I had two options - Windows Vista and Ubuntu. Neither worked - Vista has been deleted and replaced by Ubuntu and 'Ubuntu' option was somehow wrongly set.
Now, I have two systems installed and I cannot run neither of them, so I'm using LiveCD. Is here anybody who'd tell me exactly what am I ought to do? I'm literally lost...
Thanks.
Edit: sudo fdisk -l output:
Disk /dev/sda: 1000.2 GB, 1000204886016 bytes
255 heads, 63 sectors/track, 121601 cylinders, total 1953525168 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
Disk identifier: 0x7c12e647
Device Boot Start End Blocks Id System
/dev/sda1 * 63 1729975589 864987763+ 7 HPFS/NTFS/exFAT
Partition 1 does not start on physical sector boundary.
/dev/sda2 1935093760 1953521663 9213952 7 HPFS/NTFS/exFAT
/dev/sda3 1912696830 1929230335 8266753 5 Extended
Partition 3 does not start on physical sector boundary.
/dev/sda4 1729976320 1912694783 91359232 83 Linux
/dev/sda5 1912696832 1929230335 8266752 82 Linux swap / Solaris
Partition table entries are not in disk order
Disk /dev/sdb: 7862 MB, 7862353920 bytes
37 heads, 37 sectors/track, 11217 cylinders, total 15356160 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xc3072e18
Device Boot Start End Blocks Id System
/dev/sdb1 * 8064 15356159 7674048 c W95 FAT32 (LBA)
Disk /dev/sdc: 8053 MB, 8053063680 bytes
255 heads, 63 sectors/track, 979 cylinders, total 15728640 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x00000000
Device Boot Start End Blocks Id System
/dev/sdc1 * 2048 15728639 7863296 b W95 FAT32