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The disk drive /boot/efi is not ready yet or not present Error

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http://askubuntu.com – I have installed Ubuntu 12.04 64bit version. I have no problem with it until we tried to take a backup by using Acronis True Image software. Normally, Ubuntu was seen under BIOS menu under "EFI Boot" option. Then, there was a problem with this software and Ubuntu is lost from the EFI Boot menu. Then, Ubuntu cannot boot. I have used the Boot-Repair software given in the following link. I have followed the steps given in recommended solution. I have installed GParted, deleted the FAT32 boot partition and created an unformatted partition with bios_grub flag as recommended by the Boot-Repair so (HowTos)

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Submitted by Danial on 08/11/2012 – Made popular on 08/11/2012

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I'm newbie here. Yesterday I decided to install Ubuntu 12.04 as I have already installed Windows 7 and want to go for dual boot. The problem is it doesn't shows me the boot menu. This is what I get: Quote: Error: no such partition grub rescue> First, I installed it manually and when I saw this message, I started searching for the solution.

Hello, I've just tried upgrading Ubuntu from 12.04 to 12.10, when the system restarted the "grub rescue" prompt was displayed. I've tried booting into ubuntu through a live usb, installed boot repair and run it, but I am getting the following

Quote:

Locked-ESP detected.

Hello guys, I'm newbie here. Yesterday I decided to install Ubuntu 12.04 as I have already installed Windows 7 and want to go for dual boot. The problem is it doesn't shows me the boot menu.

Mythbuntu 12.04 - I attempted to move one data drive to a different sata port, now the system doesn't boot (all drives are back to the original sata ports).

I ran boot-repair (using 12.04 live CD, ran the recommended repair) No change, the system doesn't boot.

I can boot the system off a rescue CD, choosing to boot off the correct boot drive.

So I installed Ubuntu 12.04 LTE 64-bit using the DVD. I followed LinuxBSDos guide for dual booting Windows 7 (first installed) and Ubuntu 12.04 (second install) on 2 Separate Hard drives.

I had Windows 7 Pro installed on /dev/sda1.

Ok, so I'm having this problem. I have also seen something called Boot Repair

Any help?

I have a dual boot of Win7 and Ubuntu on my HP laptop. I upgraded from Ubuntu 11.10 to 12.04 today and on restart I got a different black Grub screen instead of the usual purple one. (GNU GRUB version 1.99-21ubuntu3.1) Each boot option only returns error messages.

Dual boot system, Win XP and Ubuntu 11 with Grub, working fine. Update from 11.10 to 12.04 runs smooth, at end I reboot. At boot, Grub menu won't appear, I get: error: out of partition grub rescue>

Tried the boot-repair disk.

I downloaded a copy of Ubuntu 64-bit OS iso images and booted up in the thumb drive. I then created a live USB using Unetbootin. I then booted the live USB up in non EFI mode and installed Ubuntu in a separate partition so that I could have 2 Operating System on my computer.

But I could not get the dual boot option.