Debian Installation :: Grub2 Doesn't Recognize The UUIds - Invalid Signature

Aug 11, 2010

I have /dev/sda with Squeeze and Win 7 on it, and /dev/sdb with Squeeze. I've managed to get Grub 2 to boot from /dev/sdb1, but only by disabling /dev/sda from being a boot option in the BIOS. When it is available to boot, and lower priority than /dev/sdb, grub does not recognize the UUIds of the disks. So, I've disabled it for now and can boot from /dev/sdb no problems. Trouble is I cannot get Win7 to boot. Grub prints:

error: no such device: f0903a3a903a081c
error: invalid signature

When I boot into Squeeze and run 'blkid' I can see that:

/dev/sda1: LABEL="System Reserved" UUID="F0903A3A903A081C" TYPE="ntfs"

The Grub entry for Win 7 is:

menuentry "Windows 7 (loader) (on /dev/sda1)" {
insmod ntfs
set root='(hd0,1)'
search --no-floppy --fs-uuid --set f0903a3a903a081c
chainloader +1

I don't understand how Grub 2 cannot recognize the UUIds. Can Grub 2 to be made to work with volume labels or just plain old /dev/... descriptions? Maybe I should give grub-legacy a go.

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Ubuntu Installation :: 9.10 - Cannot Boot Win 7 (Invalid Signature)

Apr 5, 2010

I'm trying to install Ubuntu 9.10 on my machine which already has Windows 7 (I want to be able to dual-boot). I had no problems installing Ubuntu but now I cannot boot Windows, I get this error after selecting Windows in the Grub boot menu:
Error: invalid signature
Press any key to continue

When I press a key I'm returned to the Grub menu. There I can boot Linux without problems. I have two 500 GB disks in a RAID 1 array. Windows 7 is installed there. Then I have a 1.5 TB disk where I installed Linux in a partition I created for it. I think the problem may be that I have RAID because this seems to show up as two disks and not one:
more /boot/grub/
(hd0) /dev/sda
(hd1) /dev/sdb
(hd2) /dev/sdc
Three disks and not two.

If I do sudo update-grub I get this:
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.31-20-generic
Found initrd image: /boot/initrd.img-2.6.31-20-generic
Found linux image: /boot/vmlinuz-2.6.31-14-generic
Found initrd image: /boot/initrd.img-2.6.31-14-generic
Found memtest86+ image: /boot/memtest86+.bin
Found Windows 7 (loader) on /dev/mapper/isw_ccdddiiiea_Mirror1
grub-probe: error: no mapping exists for `isw_ccdddiiiea_Mirror1'

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Ubuntu Installation :: Triple Boot: 9.10 / XP Home / XP Pro - Error: Invalid Signature

Jan 11, 2010

I have a fairly old computer, (4 years) it is has an Intel Pentium 4 3,4 Ghz processor with 1,5Gb RAM, and had been running XP Home on a 80Gb HDD. About three weeks ago, I purchased a 500Gb HDD, and disconnected my old drive. I partitioned the new drive to 120 Gb and 380Gb. I put XP Pro on the 120Gb partition, and Ubuntu 9.10 on the balance.

On reboot, startup menu (grub?) gave me the option to boot from, among others, Ubuntu 9.10, and XP Pro. Both worked fine! I then reconnected the old drive, and if I wanted to boot up in XP Home, would tap "F8" on start-up, and select the old HDD to boot from. This was working fine and I was happy with the way it worked! This morning, when I re-booted, the Start-up menu now had XP Home added to the list.

If I select either Ubuntu 9.10 or XP Home, they both work fine, but if I select XP Pro, it give me the message "error: invalid signature" and when I press any key, brings me back to the menu.

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Ubuntu Installation :: GRUB2 Broken After Upgrade To 10.04 - No Signature?

Jul 8, 2010

I took the distribution upgrade from the update manager and can't boot now. Boot into a Live CD (ver. 9.10 - does that matter?), and go through the following steps.

ubuntu@ubuntu:~$ sudo fdisk -l
Warning: invalid flag 0x0000 of partition table 5 will be corrected by w(rite)
Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk identifier: 0x000ad56f


Anyone have an idea here? I have searched a lot and have only found a few references to this issue. Does the invalid flag message relate here? The partition is flagged as 'boot'.

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Ubuntu :: Grub2 Doesn't Recognize Windows 7

Sep 1, 2011

I installed windows 7 after I installed linux. I got grub reinstalled but windows doesnt show up in the grup menu. So I run in linux sudo update-grub, but this doesnt find my windows system.

Here's my fdisk -l


Device Boot Start End Blocks Id System
/dev/sda1 1 8511 68358144 83 Linux
/dev/sda2 8511 8572 487425 5 Extended


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Ubuntu Servers :: Not Quite Understanding UUIDs And Grub2 On 10.04 Server?

Jul 16, 2010

I'm trying to set up an Ubuntu server using 10.04 (64-bit), and running into problems after a couple of reconfigurations. Here's the full story:I initially built the server on a 400+GB RAID5 array, putting everything but swap in one partition. Unfortunately, I needed to repartition, putting / in the first primary partition, swap in the second partition, /var/log in the third primary partition and /home in the remaining space on the fourth primary partition.

However, at this step, I ran into some problems with UUIDs in /etc/fstab and Grub2 (I've used Linux for about 9 years, but I'm new to Ubuntu, and I haven't used UUIDs or Grub2 on Gentoo, yet). Consequently, I made the (probably not smart) decision to move back to the /dev/sdX notation I am familiar with.The problem with that is that now I need even more space on /home, so I've added a Dell Powervault and a Dell PERC5/e SATA card to my server. Now, Grub2 tries to boot from the new RAID array on the Powervault instead of the internal RAID array, so I am trying to move back to the UUID notation so that I don't have worry about /dev/sda being the internal array sometimes and the external array at other times.I don't mind being RTFM'd, but I'm having trouble finding pointers to the documentation explaining Grub2 configuration and the UUID notation. Does anyone have pointers to some readable, concise documentation on configuring this in Ubuntu?

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Ubuntu :: How To Make Grub2 Generate A Grub.cfg File Without UUIDs?

Jul 11, 2010

I want to do everything with disk labels. My /etc/fstab is already set up for labels.How can I tell grub2 to use labels? I need it to stop using UUID for root.

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Debian :: 'INVALID Magic Number' - Grub2

May 6, 2011

I get error 'invalid magic number' when using this

vmlinuz 2,417,247 bytes

if I use this:

vmlinuz 2,417,312 bytes

then later it complains about kernel mismatch

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Ubuntu Installation :: Grub2 Does Not Recognize Windows 7

Feb 28, 2010

I have 2 hard drives, first drive (hd0) is for data, second drive (hd1) is for the OS's. Windows 7 was installed on (hd1) a few months ago and wiped out GRUB. But today, I decided to go back to Ubuntu. I performed a fresh install of 9.10 x64 to (hd2), GRUB2 works and finds Ubuntu (both the newly installed x64, and the previous x86 versions), but it does not see Windows 7. The only goal I have right now, is to make Windows 7 bootable, once again.

My "sudo fdisk -l" (typing manually, so skipping the Blocks)
Device Boot Id System
/dev/sdb1 83 Linux -- where x64 9.10 is
/dev/sdb2 f W95 Ext'd (LBA)
/dev/sdb5 83 Linux -- where x86 9.04 is
/dev/sdb6 83 Linux -- /home
/dev/sdb7 82 Linux Swap / Solaris
/dev/sdb8 87 HPFS/NTFS -- Windows 7

Things I've tried so far:
1) Automatically finding Windows: sudo update-grub2
2) Reinstalling grub via Live CD (9.10): sudo grub-install --root-directory=/media/(where sdb1 - x64 Ubuntu is) /dev/sdb
3) Forgetting Ubuntu altogether and fixing boot using Windows 7 - bootrec.exe /fixmbr; bootrec.exe /rebuildbcd

Now, number 3 is interesting, I found out that where Windows is installed, /dev/sdb8, is a logical partition, and cannot be made active (bootable). This led me to try number 4:

4) Updating /etc/grub.d with custom 40_Win7 file, and making it bootable (the GRUB makeactive, GRUB2 parttool command):
echo "Adding Win 7 to Bootloader" >&2
cat << EOF
menuentry "Windows 7" {
insmod ntfs
set root=(hd1,8 )
parttool (hd1,8 ) boot+
chainloader +1

When I update grub.cfg after trying #4, it gives me the "not a primary partition" error. So now I am confused. Windows 7 was able to boot previously from this very partition, and I don't think installing 9.10 would change a partition type from primary to logical. So, why can't it boot? More importantly, what can I do to boot Windows 7?

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Ubuntu Installation :: Grub2 Doesn't See Windows 7 - Doesn't Appear In Boot Menu

Jun 10, 2010

i wiped my entire hard drive that had xp as its only OS. I freshly installed a Windows 7 ultimate and everything went perfectly. I then decided to install 10.4. I split the partitions correctly (i had experience doing this already with my laptop, which has xp/10.4). Ubuntu 10.4 install went flawlessly, except for one thing. Now when i boot up the pc, it goes straight into 10.4. I have tried holding shift during the start up to force the boot menu, and it just shows the Ubuntu 10.4 OS as choices. Any clue what i could do to make Win7 appear in the boot menu?

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Debian Installation :: When Connect The Printer, Doesn't Recognize Printer As The Photosmart B109 Printer For Unknown Reason?

Jan 3, 2011

I've bought a HP Photosmart printer, HP Photosmart wireless e-All-in-One printer - B110a and i've got a problem installing it properly. I'm using Debian 6.0 Squeeze. When i connect the printer, Debian doesn't recognize my printer as the Photosmart B109 printer for unknown reason. When i go to the site of HP and search for a driver, it directs me to this site:I've downloaded that latest hplip file as a .run file and installed it. My printer is recognized proparly, but when i try to print a colored image, it comes out black/white. Something is not crrect. Does anyone recognize this problem with this type HP printer?

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Debian :: Doesn't Recognize Yamaha Keyboard

Aug 22, 2015

I've been trying with this for a long time and I can't get it to work. Jack and aconnect doesn't see my keyboard. There is nothing in both of them. Yet, my computer does see it.

amidi -l
Dir Device Name
IO hw:2,0,0 Portable G MIDI 1

Bus 008 Device 002: ID 0930:6545 Toshiba Corp. Kingston DataTraveler 102/2.0 / HEMA Flash Drive 2 GB / PNY Attache 4GB Stick
Bus 008 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 006 Device 002: ID 046d:c313 Logitech, Inc. Internet 350 Keyboard

[Code] ....

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Debian :: Opera On Lenny Doesn't Recognize Hyperlinks

Mar 22, 2009

I've got a box running Etch which seems to have a bad memory controller (I get segmentation faults left, right and centre) so I've built a new 'puter with twice the CPU power (2.4Ghz Intel Q6600 vs Athlon 1000+) and four times the RAM (2Gig vs 512M). I downloaded Lenny three days ago and, apart from some screen resolution issues which I've been discussing in the Newbie forum, most things have been working just fine.

However, I downloaded Opera yesterday (opera_9.64.2480.gcc4.qt3_i386.deb - same version I've been using on the Etch box) and I've seen some strange behaviour. A lot of sites, this one for example, work as expected, but if I go to, for example, or, the hyperlinks don't work, the cursor doesn't change to a hand when I hover over the links and clicking over the links doesn't do anything. The same pages work normally using Opera on my Etch box so it seems to be an issue with Lenny, or maybe Gnome on Lenny (I have KDE on the Etch box).

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Fedora Installation :: Computer Doesn't Recognize CD

Jun 6, 2011

I am having a problem installing Fedora from a CD.When I put the installation CD into the drive and restart the computer, the computer does not recognize the CD and boots automatically into my old version (version 8) of Fedora.I have already made sure that the CD drive comes before the HDD drive in my BIOS settings, and I have already tried using different CDs.

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Ubuntu Installation :: Mac4lin - It Doesn't Recognize It?

Feb 13, 2011

I am trying to make my desktop look like a Mac. I followed the instructions here. Here is exactly what I did:

1. Downloaded the Mac4lin package.

2. Extracted folder in my downloads.

3. Went to System > Preferences > Appearance.

4. Clicked install.

5. Installed Downloads > Mac4Lin_Install_v1.0 > Mac4Lin_Install_v1.0 >b GTK > Mac4Lin_Meta_v1.0.tar.gz.

However, when I do this, it doesn't recognize it, as you can see in the picture. Did I do something wrong when installing it?

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Ubuntu Installation :: Doesn't Recognize Mu Hard Drive

Dec 10, 2010

I've bought new PC, and installed win 7 first. Then i've resized my disc and left the half of it unallocated for my ubuntu. But the ubuntu installer doesnt see my hard disk. when i run fdisc -l, the only thing that i see is my usb from wich i'm booting. I know that this is a common problem, searched for help on the web for hours and nothing worked.

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Ubuntu Installation :: Doesn't Recognize Wireless Connection

May 21, 2011

I've been trying to install 11.04 on my 2009 Macbook Pro, but I can't complete the installation because Ubuntu doesn't recognize my wireless connection.

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Fedora :: Signature Doesn't Work In Evolution Email?

Sep 28, 2010

I am using Evolution 2.28.3 with Fedora 12. If I go to preferences and try to add a signature or signature script the textbox goes from slightly blue to white but I can't enter any text or paste anything in it. I also noticed that it won't let be check the box for signature above previous message.

Is it broken or am I missing something?

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Ubuntu Installation :: Forced Upgrade From 7.10 On Sparc - Doesn’t Recognize The Cd Rom

Aug 14, 2010

Got kernel panic when upgradeing from 9.04 to 9.10... Have a tough time with this sparc server. On newer disto it doesnt regognize the cdrom in installation what will result in no install. I tried all trix I found on internet about this issue but none of them did it for me. So I went back in versions. When I come to 7.10 gutsy everything seems to work, so now everything is up and running.

But now I want it back on version 9.04. Last time (a year ago) I did the same thing, and just do-release-update to current version. Now that doesnt work. Maybe becourse I need some updates to gutsy, and the gutsy repositorys is not available anywere. how I can pass this upgrade to 8.04? I set the APT::Get::AllowUnauthenticated true; to pass this far...

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Ubuntu Networking :: Doesn't Recognize Any Wireless Networks After First Installation

Apr 4, 2011

I recently installed ubuntu 10 on my Compaq mini 730ej. I installed it using the wubi software. Although it works fine with regular lAN connection, it doesn't recognize any wireless networks - when I click the icon I see a "missing firmware" massage. Now - I am a linux newbie, so be gentle, but I would very much like to solve this problem since.So what can I do?

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Ubuntu Installation :: Grub2 Doesn't Show Vista?

Feb 6, 2010

I recently installed Ubuntu 9.10 onto my second hard drive, and now I can't boot into Vista (installed on hard drive #1). Grub2 just doesn't seem to be recognizing that there is a Windows Vista installation on the first hard drive.

I followed this guide (with Fabien's changes) because it seemed like they were having the exact same problem. But after rebooting, Vista is still not showing in the GRUB menu. In fact, the GRUB menu doesn't even show up unless I press Shift because it thinks that Ubuntu is the only OS installed on my computer.

My results with boot_info_script:

============================= Boot Info Summary: ==============================
=> Grub 2 is installed in the MBR of /dev/sda and looks for (UUID=e94a058d-1d19-4a98-924b-1a5fce405bdd)/boot/grub.
=> Windows is installed in the MBR of /dev/sdb sda1:


When I was installing Ubuntu to HD2 (the 500gb one), I got a peculiar message saying that Windows was installed on it. There wasn't anything on HD2 though, because Windows Vista was most definitely installed on HD1.

However, if I chose to overwrite HD1 with Ubuntu, the message wouldn't come up. It seemed like the installer was confused as to which hard drive actually held my Windows Vista install.

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Ubuntu Installation :: 10.04 /dev/md0 Doesn't Exist When Grub2 Tries To Access It

May 1, 2010

I have installed Lucid Lynx more than a dozen times in the past thirty hours and I've almost got it working with RAID. The current problem is with /dev/md0 not existing when grub2 tries to access it. When I boot from the alternate CD in rescue mode, Ubuntu sees /dev/md0 as a software RAID array and I can access the files accordingly. When I boot from the grub2 bootloader, it sits for a while before spitting out "Gave up waiting for root device" and tossing me into the initramfs shell where I can see that /dev/md0 doesn't (yet) exist. What can I change within grub2's configuration to inspire it to start /dev/md0 before trying to mount it?

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Ubuntu Installation :: GRUB2 Doesn't Boot After Clonning?

Dec 7, 2010

I'm installing Ubuntu server 10.04 LTS in several machines with identical hardware using clonezilla.Every thing is ok except than wen starting a cloned machine, grub waits the user to make a selection to boot from.The hard disk has 3 partition:

Device Boot Start End Blocks Id System
/dev/sda1 * 1 14 112423+ 83 Linux
/dev/sda2 15 1059 8393962+ 82 Linux swap / Solaris[code].....

how to do to start automaticaly? This is the content of grub configuration file (/boot/grub/grub.cfg)[code]...........

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Ubuntu Installation :: 8.04 Vs 9.10 - ATI Radeon 9000 Graphics Card Doesn't Recognize

Jan 20, 2010

I have an ATI Radeon 9000 Graphics card that Ubuntu 9.10 doesn't seem to recognize no matter what I do. Knowing that its an older card and that ATI stopped support for it a while ago, I was wondering if anyone knows if I would have better luck on Ubuntu 8.04. I can't get 3d or opengl to work, or install the correct ATI Driver.

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Ubuntu Installation :: Doesn't Recognize Fedora For Grub On Install / Solve This?

Jan 23, 2010

First time this has happened. I installed Fedora first (XP already installed) and then installed Ubuntu 9.10 64. Fedora doesn't show up on boot up menu. I've tried update-grub.
Before I would have just edited menu.lst, but now?? I dunno.
edit; Here's fdisk with Fedora on sda6

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Ubuntu Installation :: Grub2 Doesn't See Puppy And Let Boot It From The Menu?

Feb 5, 2010

I have Ubuntu 9.10, PuppyLinux431 and Windows XP on a Toshiba laptop. I like Ubuntu, but the speed of PuppyLinux is addictive, so that was my default boot until I upgraded Ubuntu which included an upgrade to Grub2.

My problem: Grub2 doesn't recognise PuppyLinux. Using information from [url] I have made an executable file named 07_Puppy in /etc/grub.d and did update-grub from root. Still no luck. I can boot PuppyLinux from the grub command line using the following commands:

Just before grub displays the boot menu, I think I see a very brief message about a syntax error, but it's gone before I can read it.

Here is the contents of my grub.cfg:


Why Grub2 doesn't see Puppy and let me boot it from the menu?

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Ubuntu :: New Triple-booted Installation Doesn't Load Grub2

Aug 5, 2011

I'm attempting to triple boot Windows 7, Mac OS X, and Ubuntu 11.04 on non-Mac hardware. Chameleon is my primary bootloader, which is supposed to chainboot into grub2, but all I get when I choose the Linux boot option is a black screen with blinking cursor. If I try to boot Ubuntu while holding shift, I get the word GRUB, followed by a space and a blinking cursor. grub2 is installed to the Ubuntu partition, and attempts to reinstall it there or to the MBR from a LiveCD result in errors. The MBR and GPT partition tables are synchronized. How do I go about making Ubuntu bootable, without breaking my other two operating systems (or at least leaving them recoverable)?

I built a new desktop computer.The goal was to triple boot the system with Windows 7, Mac OS X Snow Leopard, and Ubuntu 11.04. This endeavor has been significantly more complicated than I originally expected, but with the of a forum-goer at, I've managed to get pretty far with a complex installation process. I've attempted to get Ubuntu running using two methods, neither of them achieving what I'm hoping. Both methods follow.

In the first method, I install Mac OS X using a specially designed install CD that boots into the Snow Leopard installation DVD. The disk is partitioned to have a FAT partition, followed by a Mac OS X journaled partition, ending in a second FAT partition. Mac OS is then installed to the second partition. The Windows boot CD is then used to format the first FAT partition as NTFS, which Windows 7 is then installed to.

As I'm sure you know, this installs Windows Boot Manager. Then I boot into OS X using the boot CD mentioned earlier, and install Chameleon, a bootloader specifically designed for Hackintosh systems, and (supposedly) capable of booting into all three operating systems I'm trying to work with. Finally, I divide and reformat the remaining FAT partition into an ext4 partition and a swap partition, and install Ubuntu to that ext4 partition, with the bootloader installed to the same partition. This will break the Windows bootloader, as now the MBR and GPT tables are no longer syncronized. Ubuntu is also unbootable; attempting to chainload into grub2 leaves me at a black screen with a blinking cursor. The former problem is solved by booting into a LiveCD and installing and running gptsync. Windows is now bootable, but Ubuntu remains in 'limbo'.

The second method I attempted is very similar, but deviates in the last few steps. After installing Windows, I instead install Ubuntu 10.04 LTS, as I thought I might have fewer bootloader issues with that distribution (don't ask why; it was a lucky hunch).This breaks Windows Boot Manager, but this time grub2 throws me into the grub> prompt.I can boot into Ubuntu just fine using the set root/linux/initrd/boot commands, but my motherboard's Ethernet port is not detected by the OS, so I can't directly download and run gptsync. Once I do manage to run it, though, Windows is then also repaired.

Unfortunately, since I can't access the Internet, I can't do a distribution upgrade that way. Trying to upgrade from the recent release's LiveCD...well...doesn't upgrade, just overwrites. So I get the same black screen with blinking cursor problem. I've tried reinstalling grub2 through a LiveCD using grub-install both using the --root-directory flag and the chroot method.

System specifications:
Intel Core i7 (LGA1155)


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Ubuntu Installation :: Maverick Installer Doesn't Recognize Existing Partition List?

Oct 13, 2010

I have been upgrading from 9.04 to 10.04. Now, I want to install 10.10 from the beginning without losing the data in my current partitions but when I run the Maverick installer it recognize my disk as a whole with no partitions. From another posts, I suspect that the problem is in the partition list because it seems to be a duplicate partition but don't know how to fix it. This is the fdisk output:

jgarcia@jgarcia-laptop:~$ sudo fdisk -lu /dev/sda
Disco /dev/sda: 250.1 GB, 250059350016 bytes
255 cabezas, 63 sectores/pista, 30401 cilindros, 488397168 sectores en total
Unidades = sectores de 1 * 512 = 512 bytes


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Ubuntu Installation :: Grub Doesn't Recognize Windows 7 Partition - 10.10 Maverick User?

Dec 23, 2010

I recently have installed Ubuntu 10.10 Maverick Netbook Edition in my personal netbook. The thing is that I had installed Windows 7 in the hard disk drive so I decided to install Ubuntu alongside with it. After the process of installation everything was cool but I hadn't the Grub working. I then pressed the Shift button during the booting process so I got the Grub menu but it didn't show the Windows 7 partition. The Windows installation was not erased because its file system is present in Nautilus. I have tried reinstalling the Grub a thousand times but nothing changes. I have attached the results of the boot info script so you can have some info about my booting configuration.

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Ubuntu Installation :: Empathy And Pidgeon - Activate My Video For Both - Doesn't Recognize My Webcam

Mar 20, 2011

I have both pigeon and empathy working on my laptop, and can chat in both, but i have been wanting to activate my video for both, but apparently it doesn't recognize my webcam. It seems strange as i have skype working perfectly on my system, and can use the video option in it without any problem, so it cant be that my webcam isnt recognized. does anyone know how i can get my webcam working in either or both of these instant messengering services.

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