Ubuntu won t boot after reinstalling Xp

If you installed XP first, you didn't choose to install Grub (Boot Loader Manager) when you installed Ubuntu, and you didn't write anything to MBR, and after the installation was successful, you will not be able to enter the Ubuntu you just installed. Because there is no boot file. At this point, the file that enters the xpnst is started to write to the boot.

Mine is as follows: title start ubuntuclearroot (hd0,7).

kernel /boot/ root=/dev/sda8 ro quiet splash

initrd /boot/

boot here to note that your boot parameters are different from mine in two places.

One is HD0,7 and the other is SDA8

How to modify it: For details about disk naming conventions and grub commands in Linux, see Disk Naming Rules and Grub Command Writing.

There is another way,Install System Commander under XP.,After installation, there should be Ubuntu in the boot menu.。

If you are, check out the grub2 basics tutorial. pdf, which has a detailed operation plan, you can find it at once.

If it is and previous versions.

Enter with the ubuntu system disk, select the trial, and then enter the terminal.

sudo su

fdisk -l is based on the information listed, assuming dev sda(x+1).

grubroot (hd0,x)

setup (hd0)

If yes, try this.

Because put the laptop.

The boot was broken.,Later, I accidentally formatted the disk.,I'm miserable!

There's no way, and I have to honestly install the ubuntu system and wait until the U disk I bought.

It's expensive, and it hurts! After arriving,Then start making a U disk boot disk,And then go to install ubuntu,At first, this situation was displayed,I thought it was my mirror in addition to the problem,And then I went to a new image,Made a boot disk again,Or the problem (at this time I was quite puzzled),And then look at your own boot The first item is also a U disk! If you can't solve it, what should I do?

After a while, it would be nice to change the name! (It's that simple, I didn't believe it at the time), and I tried it out, and it really turned out to be that simple.

How:In the installed USB flash drive, locate the folder.

EFI BOOT, there is a file called in it, after changing him, take the U disk as the first boot disk again, and it's OK.

After installing ubuntu again, I went to install another kali, but I had another problem with the installation, and the situation is as follows:

You can set up the bootstrap ubuntu in neogrub. Most of the people who write and install ubuntu tutorials on the Internet are still Windows-based, so there are always some problems.

Actually, when you install Ubuntu, you just need to install the Ubuntu bootloader on the dev sda. Why are some people reluctant to remove Windows, a bootloader that can't accommodate others?

Ubuntu is an open source GNU Linux operating system based on desktop applications, Ubuntu is based on DebianGNU Linux, supports x86, AMD 64 (i.e. x64) and PPC architecture, and is built by a global professional development team (Canonical Ltd).

Its name comes from the Zulu or Hausa word "ubuntu" in southern Africa, which resembles the Confucian idea of "benevolence", which means "human nature" and "I exist because everyone exists", which is a traditional African value.

Ubuntu is based on the Debian distro and the Gnome desktop environment, and from this release, the Ubuntu distro abandons the Gnome desktop environment and changes to Unity, which differs from Debian in that it releases a new version every 6 months. Ubuntu's goal is to provide the general user with an up-to-date, yet fairly stable operating system built primarily on free software. Ubuntu has a huge community force, and users can conveniently get help from the community.

So the Ubuntu system was installed on the XP. However, since I reinstalled XP, I was curious. The first time I reinstalled the system, I could still see that there was ubuntu at startup.

But after reinstalling it again, I found that it was gone. So, take advantage of the time you have at work. Get this thing right.

On the ubuntu forum I found out how to material. Excerpt: After installing Ubuntu, sometimes you need to reinstall XP, which will overwrite the MBR (Master Boot Sector) of the hard disk, causing Ubuntu to fail to boot, and there are many solutions to this situation on the Internet, but it is a bit complicated.

2.Open My Computer, select Tools -> Folder Options -> View -> check Show all files and folders.

3.Remove the read-only attribute of the file in the root directory of the C drive, and add c: grldr= at the end"start grub4dos"Save.

4.Restart the computer and enter "Start with Grub4DOS" Method 1: After entering "Start with Grub4DOS", you can see an option of "Find and boot Linux with already installed", select it, it will automatically search for ubuntu on the machine, and then select ubuntu to start ubuntu normally.

PS: Regarding the "find and boot linux with already installed" option, it is actually to search for the ubuntu partition in the disk, which is a bit redundant if you search for the partition every time you enter. So we can copy the boot grub file to the root directory of the C drive after entering ubuntu, so that entering "start with grub4dos" does not need to detect the ubuntu partition.

I followed the steps above, but strangely, the startup item I wanted "find and boot linux with already installed" didn't appear at all. So I don't think the author is wrong. Take a look:

Put the grldr and three files in the root directory of the C drive.

Dizzy. How can you put grub4dos' out? He didn't know there was such a system as Ubuntu.

I guess you chose this item.,Grub4DOS program automatically went to look it up.,But mine didn't appear.,So··· RP) Then, I thought about it and decided to put ubuntu's in. Instead of grup4dos. Ha ha.

That's it... This little process has taught me that the information on the Internet is not necessarily right (for you). We need to use our brains!

It's a trifle, though!

It's okay on the first floor, but I get dizzy when I see it, I'm too lazy to type a question like this, you can find it yourself.

Do it as follows.

First, put the ubuntu installation disc in and start it. Enter the installation interface normally and open the terminal:

1. Input: sudo grub, then it becomes grub

2. Find out where your Ubuntu boot partition is (that is, the partition where your boot directory is located).

Enter: find boot grub stage1

After entering, it displays: (hd0,2) where hd0 refers to the first hard disk, and 2 represents the third partition, that is, the partition where the ubuntu root directory is located (0 represents the first partition).

3. Input: grubroot (hd0,2).

4. Input: grubsetup (hd0).

If there is successed, it means success.

5. Type: grubquit, and then restart.

For those who have multiple hard disks, please note that if your Windows is on the first disk and Linux is on the second disk, and your BIOS is set to boot from the first disk, then be sure to set the parameters to your first disk when proceeding to step 3 above. That is, you need to load the grub into the MBR of the boot drive, you can load the grub into the MBR of each drive, and this can still boot, it's just a matter of order.

It is a hidden file of the system, and you need to check "Hide protected operating system files" in the "Folder Options" to see it, and if you want to modify it, you need to remove its "system" attribute. Then follow the method on the Internet to repair the guide, I haven't tried the specifics, so it's hard to say, waiting for other masters to improve the answer.

After ubuntu use grub2, there is no grub command!

But there is the grub-setup (grub-install) command!

This command into livecd can be used to fix the boot of grub2.

Update the boot menu with update-grub!

After the change, add the grub4dos startup item.

Go to the grub command line: let's go from grub1 to grub2:

grub>find boot grub (this is the core file of grub2).

grub>root (hd0,x) (ubuntu's boot partition).

grub>kernel boot grub (just a kernel statement!) )

grub>boot

Go to the Grub2 splash screen!

After entering ubuntu, you still need to use it, grub-setup to install grub to mbr!

In addition, grub-setup dev sda will update the boot menu after that, and the xp will be added automatically. with update-grub,

You can find it, but it hides the files you can't see, and you can do the following:

Ctrl+r pops up to run, type.

C: Then press Enter.

This way you can open your boot file.

If you see a problem with the above, you can change it.

For a detailed boot introduction, see the following **.

Good luck!!!

That's the bottom-level add-on for your ubuntu, xp to influence.,There's no way around this.。

I've also installed XP+UBUNTU, and I don't seem to have this phenomenon, first install the XP system and then install Ubuntu. Otherwise, reload and look at the situation It doesn't have to be caused by a system conflict.

If it's a virtual machine, you can increase the running memory a little more, and the running memory of 1G will not crash when you enter ubuntu.