[SOLVED] get grub-rescue, fix with disc, get grub prompt, don't know what to do

[alun]

So here's my story. I messed up linux mint somehow so i reinstalled it, erased linux partition and made /boot and / partitions. Once it was installed I restarted from live-cd and then I got a grub rescue prompt. After some googling I found out about rescatux and I used that to reinstall grub. After rebooting I still have no bootloader but I have a grub prompt, I tried googling how to fix and everything I try doesn't work, it tells me stuff about the command not being found. I know much of the info about my partitions i'm sure I need so no need to walk me through that, or maybe you should if you think you need to. Sorry about my noobish problems and I hope someone can take the time to help me.

Thanks

Tl;Dr: got grub prompt and don't know how to use it and get bootloader back.

[MikeTbob]

Well first of all, why didn't you let the installer do it for you when you reinstalled it? No need to mess with GRUB rescue after re-installing. Are you sure that got Mint installed?
Fire up your LiveCD and issue this command, using su - or sudo, whichever works for your system.

fdisk -l

[jayd512]

Take a look at this page, from the Mint help pages.
It will walk you through re-installing GRUB.

*EDIT*
Mike was a little quicker.

[alun]

I just let the system do its thing, I wasn't aware i was doing anything wrong. in the process of booting the livecd right now.

[alun]

okay i did the fdisk -l, and i also tried the thing that jay told me to do and i get grub-probe: error: cannot find a device for /boot (is /dev mounted?) It is mounted btw...

[jayd512]

What was the output for

fdisk -l

[alun]

mint@mint ~ $ sudo fdisk -l

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders, total 156301488 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: 0x2abce1b5

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      206847      102400    7  HPFS/NTFS/exFAT
/dev/sda2          206848   120725503    60259328    7  HPFS/NTFS/exFAT
/dev/sda3       124921854   156299263    15688705    5  Extended
/dev/sda4       120725504   124919807     2097152   82  Linux swap / Solaris
/dev/sda5       124921856   125407231      242688   83  Linux
/dev/sda6       125409280   156299263    15444992   83  Linux

Partition table entries are not in disk order

First linux is swap, second is /boot, and third is root

[MikeTbob]

I just let the system do its thing, I wasn't aware i was doing anything wrong. in the process of booting the livecd right now.

Yes, when you boot the installer it will automagically do all this for you, provided you let it.

mint@mint ~ $ sudo fdisk -l

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders, total 156301488 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: 0x2abce1b5

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      206847      102400    7  HPFS/NTFS/exFAT
/dev/sda2          206848   120725503    60259328    7  HPFS/NTFS/exFAT
/dev/sda3       124921854   156299263    15688705    5  Extended
/dev/sda4       120725504   124919807     2097152   82  Linux swap / Solaris
/dev/sda5       124921856   125407231      242688   83  Linux
/dev/sda6       125409280   156299263    15444992   83  Linux

Partition table entries are not in disk order

First linux is swap, second is /boot, and third is root

Your disk structure looks ok to me. I don't understand why it didn't find the mounted /boot.
Try posting the output of

mount

[alun]

/cow on / type overlayfs (rw)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
/dev/sr0 on /cdrom type iso9660 (ro,noatime)
/dev/loop0 on /rofs type squashfs (ro,noatime)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
/dev/sda6 on /mnt type ext4 (rw)
/dev/sda5 on /mnt type ext4 (rw)
/dev/sda6 on /mnt type ext4 (rw)

I doubt this has to do with anything, but I was previously using the linux mint with cinnamon, and now have installed KDE.

[jayd512]

/cow on / type overlayfs (rw)
proc on /proc type proc (rw,noexec,nosuid,nodev)
sysfs on /sys type sysfs (rw,noexec,nosuid,nodev)
udev on /dev type devtmpfs (rw,mode=0755)
devpts on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
tmpfs on /run type tmpfs (rw,noexec,nosuid,size=10%,mode=0755)
/dev/sr0 on /cdrom type iso9660 (ro,noatime)
/dev/loop0 on /rofs type squashfs (ro,noatime)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
tmpfs on /tmp type tmpfs (rw,nosuid,nodev)
none on /run/lock type tmpfs (rw,noexec,nosuid,nodev,size=5242880)
none on /run/shm type tmpfs (rw,nosuid,nodev)
/dev/sda6 on /mnt type ext4 (rw)
/dev/sda5 on /mnt type ext4 (rw)
/dev/sda6 on /mnt type ext4 (rw)

I doubt this has to do with anything, but I was previously using the linux mint with cinnamon, and now have installed KDE.

Kinda odd that sda6 is showing twice.
If you fire up GParted, you should be able to look at the labels for each partition.
Make sure that you don't have 2 partitions labeled the same way.