Grub rescue восстановить загрузчик windows

Даже стесняюсь спросить, КАК можно случайно удалить раздел?!! :O
После grub rescue> начни вводить крманды:
ls
Покажет разделы диска в таком виде: (hd0) (hd0,msdos5) (hd0,msdos2)…
Тебе надо найти раздел с загрузчиком. Так как ты удалил раздел, попробуй сначала после ls набрать:
set
Если после этого увидишь типа:
cmdpath=(hd0)
prefix=(hd0,msdos3)/boot/grub
root=hd0,msdos3, тебе повезло…
Дальше, вместо msdos3, подставляешь в команды то, что покажет у тебя. Я буду писать …, заменишь на своё.

set boot=(hd0,msdos…)
set prefix=(hd0,msdos…)/boot/grub
insmod normal
normal

И после каждой команды, не забывай нажать Enter, а то мало ли чего…
Теперь должен загрузится GRUB, а ты попасть в Винду.
В Винде набери cmd и потом в консоли (или как там она у вас называется):

bootrec /fixmbr
bootrec /fixboot

Если в Виндовс bootrec.exe не установлена «по умалчанию», скачай и установи. Так при перезагрузке будешь попадать сразу в Винду.
Дерзай! Удачи…

In this article, Let’s learn how to boot windows from grub rescue screen. Linux is the best platform available on the planet, it offers great customization. A highly customizable platform like Linux offers enormous benefits but has only one downside that it can potentially break your system and you can eventually land up in Linux grub rescue screen. If you are looking to boot Linux from grub rescue you can refer to this article.

Steps for how to boot windows from grub rescue.

Step 1 — Listing Partitions from Grub Rescue:

First, we need to find out our EFI partition or the partition where your boot files are stored. In order to find that we need to see the available partition, so simply execute the ls command.

ls

Step 2 — Listing EFI Partition from Grub Rescue

In the first step, we have got our directory listing. Now, we need to find the appropriate partitions where our boot files reside. Typically it resides in a partition that is very small in size (typically less than 1GB) and having an EFI/ partition in it. So, In order to find that you can simply execute the ls (hdx,gpty)/ one by one.

Note: You need to replace x with the hard disk number, and y with the partition number.

ls (hdx,gpty)/

For me, the same is found in (hd0,gpt1)

Step 3 — Select the EFI Partition

Since we have found the partition, now we need to select the partition. So simply execute the below command.

set root=(hdx,gpty)

Step 4 — Chainloading the Windows EFI File.

Now, we have selected the partition in which our boot files are present, now we need to execute the command chainloader for loading a boot file, so we can boot from that.

chainloader /efi/Microsoft/Boot/bootmgfwi.efi

Step 5 — Boot Windows from Grub rescue:

Finally, you are all set to boot windows from grub rescue. Just we need to execute the below command.

boot

Conclusion — Boot windows:

ls
ls (hdx,gpty)/
set root=(hdx,gpty)
chainloader /efi/Microsoft/Boot/bootmgfwi.efi
boot

That’s it for this article, If you have any queries or suggestion please write down in comment section below.

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Previously I had installed the Ubuntu 10.04 and Windows 7.

Now I logged on to Windows, opened the partition editor and deleted the volume containing the Ubuntu — I thought it will delete the Ubuntu and it might help me install another OS — and I restarted the system.

GRUB rescue prompt is there.

I want to log on to Windows. How can I do that?

In GRUB rescue, I tried the following:

ls
(hd0) (hd0,3) (hd0,2) (hd0,1) (hd1) (hda1,1)

Tried all combinations of ls (hdax)/, which threw out:

error: Unknown Filesystem.

I tried this:

rootnoverify (hd0,0)
chainloader +1
makeactive
boot

It threw out:

Unknown command.

EDIT:

I installed Ubuntu from the USB. Now when I restarted the system, I got the GRUB, showing old Windows and the newly installed Ubuntu. I happily logged onto Windows. Then I used standard procedure to remove Ubuntu, so as not to have grub rescue.