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I have followed steps to install Linux Mint (as dual boot) on an HP Envy 14 ultrabook (1030us) as detailed by Raphink (on askubuntu "Dual boot Installation of Ubuntu 12.04 LTS on HP Ultrabook ENVY-4 1002TX") but am stuck! Since I found the information there I asked there but was told only official Ubuntu flavors were supported thus I am here.

I have gone through the installation procedure twice following all of Raphik's advice however my system will not boot into Linux Mint, or Win7, and all I see is a very primitive menu with a grub> prompt, not the grub menu which provides the option to start linux.

When I boot into Linux Mint from my usb thumb drive (by turning the machine on and pressing F9 periodically), I see the user space I created in the install process, but cannot open it.

I have the feeling I am missing something simple but I am not sure what it could be. The last bit of Raphink's instructions about making sure the bootloader is installed on /dev/sda is not exactly clear to me (since I am not sure exactly what the bootloader is or if I installed it in this process). Perhaps this is what I have done incorrectly. This is my intuition, but it is also what the tests below seem to indicate. So, here are the technical details for you.

When I use fdisk, my result:

mint@mint ~ $ sudo fdisk -l

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 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: 0xf74225fc

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *        2048      409599      203776    7  HPFS/NTFS/exFAT
/dev/sda2          409600   469336063   234463232    7  HPFS/NTFS/exFAT
/dev/sda3       469336064   976560127   253612032    5  Extended
/dev/sda4       976560128   976771071      105472    c  W95 FAT32 (LBA)
/dev/sda5       469338112   516442111    23552000    7  HPFS/NTFS/exFAT
/dev/sda6       516444160   526684159     5120000   82  Linux swap / Solaris
/dev/sda7       526686208   976560127   224936960   83  Linux

Disk /dev/sdb: 32.0 GB, 32017047552 bytes
255 heads, 63 sectors/track, 3892 cylinders, total 62533296 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: 0x8ddd6e47

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1            2048     8386559     4192256   84  OS/2 hidden C: drive
/dev/sdb2         8386560    62531583    27072512   83  Linux

Disk /dev/sdc: 4007 MB, 4007624704 bytes
32 heads, 63 sectors/track, 3882 cylinders, total 7827392 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: 0x54d2138c

   Device Boot      Start         End      Blocks   Id  System
/dev/sdc1   *          63     7826111     3913024+   c  W95 FAT32 (LBA)

I followed the advice by on (http://ubuntuforums.org/showthread.php?t=1014708) to make sure grub is installed to my Linux drive and received an error message:

mint@mint ~ $ sudo grub-install --root-directory=/media/sda7 /dev/sda
grub-probe: error: failed to get canonical path of /cow.
Probing devices to guess BIOS drives. This may take a long time.
Installing GRUB to /dev/sda as (hd0)...
Installation finished. No error reported.
This is the contents of the device map /media/sda7/boot/grub/device.map.
Check if this is correct or not. If any of the lines is incorrect,
fix it and re-run the script `grub-install'.

(fd0)    /dev/fd0
(hd0)    /dev/sda
(hd1)    /dev/sdb
(hd2)    /dev/sdc

So, it couldn't find the path of cow and according to the manpage that means caspar cannot find a persistent partition mount files ("casper-rw", "home-rw", "casper-sn*", "home-sn*" or /cow or /home), is that right? I do not know how to fix this issue.

In case this is caused by some EFI issue, I checked to make sure Mint was installed in EFI mode (per the ubuntu community UEFI help page). But if I am running from a thumbdrive which I think I am, the following command should not work, but only from Linux running from a harddrive install:

 [ -d /sys/firmware/efi ] && echo "EFI boot on HDD" || echo "Legacy boot on HDD"
EFI boot on HDD

And to confirm that my computer is set to actually boot in EFI mode see the first screen on that page, or a variant of it, giving me a tiny font menu of 4 choices one of which is Linux (one is Test Linux, the other two I don't remember).

Both of those tests ( the [ -d one and the boot screen one), seem to confirm I have installed in EFI mode, and the grub install thing seems to indicate that there is a problem with the bootloader caspar, which is perplexing to me.

What am I missing? Why cannot I boot directly into the grub menu, without pressing F9 and without inserting a thumb drive, when the Linux workspace exists in the fdisk viewable partition? Why can I not set the Linux partition to /?

Can anyone point me in the right direction on this issue?

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