error 17 cannot mount selected partition

Установил Partition Magic EN v8.0.1242 +Русификатор. Программа после установки выдала ошибку. Перезагрузится не вышло — загрузка с жёсткого не пошла.

Комп при включении на чёрном экране выдаёт ошибку:

GRUB Loading stage 1.5.
GRUB Loading , please wait.
Error 17
_ (и мигающий курсор)

Что делать. Комп даже linux не видит.
Повторная переустановка не помогла — та же ошибка.
Информация на дисках пока целая, смотрел через Acronic.

Войти могу только в BIOS

Нашёл вот такую инфу, но как и что пока не понимаю

root (hd0,0)
filesystem type unknown partition type 0x7

Error 17 : Cannot mount selected partition

Эта ошибка выдается, если требуемый раздел существует, но тип файловой системы не опознается GRUB.

Убедитесь в правильности настройки root(x,y) в своем grub.conf.

Кроме того, если вы пытаетесь загрузить Windows, обеспечьте, чтобы в вашем файле grub.conf были строки root (hdX,Y) (или rootnoverify (hdX,Y)) и chainloader (hdX,Y)+1.

При установке Partition Magic, был испорчен файл загрузки Linux /

I tried to install Arch Linux to an USB key. Things are kind of wobbly (it assumes the system has exactly one drive inside, for example) but everything installed just fine. Until I rebooted.

( /dev/dsb1 / (hd1,0) is a small FAT partition for data storing purposes — for those locked down lab computers.)

Here’s the ‘Arch Linux’ command sequence:

At the grub console:

I could successfully reboot in my host OS, Ubuntu, and used the Disk Tool to confirm partitioning was successful. Also, running sudo kvm /dev/dsb resulted in a successful Arch boot once I edited the commands to boot from root (hd0,1) (that is, until Arch tried to mount /dev/dsb2 ).

What did I do wrong?

From Ubuntu, fdisk -l /dev/sdb gives:

I have now read the related wiki section but nothing seems to apply: I didn’t use GParted or logical drives; everything is on the same partition.

2 Answers 2

The first thing to check in this situation is if the disk you’re trying to boot from is the right one. The ordering of disks can depend on many factors:

In Grub1, you only get access to two hard disks. This is a limitation of the BIOS interface. Which two hard disks you actually get depends on your BIOS settings (look for something like “boot order”) and what disks and other hard-disk-like bootable media (e.g. USB flash drives) you actually have available.

Under Linux, the ordering of sda , sdb , etc., depends on the order in which drives are detected, which at boot time often depends on the order in which the drivers are loaded. Also, whether some disks appear as sd? or hd? depends on kernel configuration options and udev settings.

Here Grub is reporting a partition with type 7. While Linux and Grub don’t care about partition types (except for “container” partitions such as extended partitions), it is unusual to have a Linux filesystem on a partition with type 7 (which fdisk describes as HPFS/NTFS ). So my guess is that whichever drive your BIOS is offering as the second boot drive (Grub’s hd1 ) is not the disk you want to boot, but some other disk with a Windows partition. Check if hd0 is the drive you want to boot from; if it’s not, you’ll have to change your BIOS settings.

If Grub recognizes the filesystem in a partition, you can type something like cat (hd1,1)/ and press Tab to see what files are there. This is the usual way of figuring out what filesystems you have where when you’re feeling lost at a Grub prompt.

The second thing to check would be whether the partition you’re trying to access is the right one — Grub1 counts from 0, Linux and Grub2 count from 1, and unusual situations (such as having a BSD installation) can cause further complications. Adding or removing logical partitions can cause existing partitions to be renumbered in a sometimes non-intuitive way.

Summary

If you’re using GRUB Stage 1.5 or Stage 2.0, you’ll probably encounter the GRUB loading error 15, 17, 21 or 22, which generally occurs when GRUB is trying to load the operating systems on a computer. Specify your GRUB loading error and try the solution below to fix it. If there is data loss on the computer caused by the error, use EaseUS Data Recovery Wizard to recover it as soon as possible.

What Is GRUB

GRUB or GNU GRUB is short for GRand Unified Bootloader. It is a boot loader used on multi-OS computers that provides users the choice to choose which operating system to boot from on the computer. Different operating systems may need varying boot loaders. For example, NTLDR is the boot loader for Windows NT operating systems, and LILO is the boot loader for Linux. As for GRUB, it is the boot loader for Windows and Linux and is generally used on computers that are with both Windows and Linux installations.

Common GRUB Loading Errors

However, it’s not without a problem while using GRUB. Many users have the experience of encountering the GRUB loading error during the computer startup. There are two versions of GRUB, and if you’re using Stage 1.5 or Stage 2.0, you’ll probably encounter grub loading error 15, 17, 21, or 22.

GRUB loading error 15

File not found. This error is displayed when the specified file name cannot be found.

GRUB loading error 17

Cannot mount selected partition. This error is displayed when the partition requested exists, but the file system type is not be recognized by GRUB.

GRUB loading error 21

The selected disk does not exist. This error is displayed if the disk is not recognized by the BIOS in the system.

GRUB loading error 22

No such partition. This error is displayed if a requested partition isn’t on the selected disk.

What Causes GRUB Loading Error 15, 17, 21, 22

When you install Windows and Linux on a computer, you need to configure GRUB correctly to boot from one of the operating systems successfully. Or you may encounter GRUB loading errors, like error 15, 17, 21, and 22. The common GRUB loading errors might be caused by:

• Improper configuration of GRUB
• The wrong installation location of GRUB
• Accidental deletion of GRUB
• The corruption of MBR

How to Fix GRUB Loading Error 15, 17, 21, 22

The solutions differ based on the error you are faced with. Specify the error message you encounter and carry out the corresponding solution.

Fix GRUB Loading Error 15

Make sure the kernel exists. To find out what the exact kernel name is, boot from the Live CD, and mount /boot depending on your partition and then do the following: cd /boot | ls

Fix GRUB Loading Error 17

Make sure your root(x,y) settings are right in your Grub.conf. You could use a distribution CD or Live CD to set up Grub as shown below. (h0,0) means the first hard drive and the first partition on that drive.

Fix GRUB Loading Error 21

Step 1. Boot the computer from the Ubuntu installation disc.

Step 2. Run Command Prompt as an administrator.

Step 3. Enter the following command:

Fix GRUB Loading Error 22

Step 1. Restart the computer and press «F8» until you see the options.

Step 2. Go back to the menu where you can choose the operating system.

Step 3. Choose «Microsoft Windows Recovery Console». (You may need your Windows installation disc to access the recovery console.)

Step 4. If you are asked to choose the system drive, enter the number in front of the system drive listed.

Step 5. Enter the account password as required. Run the command fixmbr and enter «y» to confirm the operation.

Step 6. Enter «exit» and restart the computer.

How to Recover Data Lost due to GRUB Loading Error

Applying the fix for a specific grub loading error in the Windows environment may data loss. Some operations would format the disk partition or delete hard drive contents, so it’s necessary to learn more about the data recovery solution after successfully getting rid of the grub loading error.

The hard drive recovery software — EaseUS Data Recovery Wizard specializes in file recovery on the desktop, laptop, internal hard drive, external hard drive, removable USB flash disk, pen drive, memory card, and many more storage devices. The accidentally deleted or formatted hard disk data can be effectively restored in simple steps. To recover data lost due to the GRUB loading error:

Step 1. Select a location to scan.

Launch EaseUS Data Recovery Wizard, hover on the partition, external hard drive, USB, or memory card from which you want to perform data recovery, and then click «Scan».

Step 2. Select the files you want to recover.

Wait until the scanning completes. Afterward, select the lost files you want to recover. If you need, double-click the file to preview its content.

Step 3. Recover lost data.

After choosing the files, click «Recover» and choose a location on another drive to save the recovered files.

The Bottom Line

GRUB loading errors always occur on computers with dual OS, and each error code is informative since it indicates what the possible cause is. Apply the solutions provided to cope with the issue and use EaseUS Data Recovery Wizard to retrieve the data when data loss happens.

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