HELP! Kernal Panic error.

[TheAndroidMan]

I'm getting the age-old "Kernal panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)" When on first install. This is a brand new VM.

I'm a very new linux user and I'm on a VirtualBox VM (of course). I also can't access the grub menu by holding shift on boot.

Try not to use any complicated wording, like I said, I have almost no clue what I'm doing here. I just want this thing installed.

[Perryg]

Post the guests log file ( as an attachment ). Right click on the guest in the Main Manager then click show log. Save and post as an attachment. Compress if it is too large to post.

[TheAndroidMan]

Post the guests log file ( as an attachment ). Right click on the guest in the Main Manager then click show log. Save and post as an attachment. Compress if it is too large to post.

Alright here you go:

[Perryg]

Your first issue is you posted in the wrong section. You do not have a Linux host, you have a Windows host. That said this belongs in the Linux as Guest. ( I will move it there )

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00:00:04.252564 VMMDev: Guest Log: BIOS: Booting from CD-ROM...

Now it appears that you are booting from the CD/Drive, meaning you have not actually installed it, correct?
I also see that you are warm booting which will create the kernel panic sometimes because the guests initramfs does not fully clear. I would do a cold boot ( power down the guest ) instead.

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00:00:01.173443 Host RAM: 8129MB total, 3370MB available
00:00:01.254767   RamSize           <integer> = 0x0000000100000000 (4 294 967 296, 4 GB)

I also see you are over committing your RAM by assigning more that you actually have available. Reduce the RAM allocation or free up host memory.

[TheAndroidMan]

Your first issue is you posted in the wrong section. You do not have a Linux host, you have a Windows host. That said this belongs in the Linux as Guest. ( I will move it there )

Code: Select all

00:00:04.252564 VMMDev: Guest Log: BIOS: Booting from CD-ROM...

Now it appears that you are booting from the CD/Drive, meaning you have not actually installed it, correct?
I also see that you are warm booting which will create the kernel panic sometimes because the guests initramfs does not fully clear. I would do a cold boot ( power down the guest ) instead.

Code: Select all

00:00:01.173443 Host RAM: 8129MB total, 3370MB available
00:00:01.254767   RamSize           <integer> = 0x0000000100000000 (4 294 967 296, 4 GB)

I also see you are over committing your RAM by assigning more that you actually have available. Reduce the RAM allocation or free up host memory.

First of all, thanks for moving this thread. I was clueless where to put this.

I haven't installed ubuntu on the VM, this is the error I'm getting when I try to install it.

I'm also wondering what you mean by cold boot... (like i said.... I'm very new to this stuff)

I have 8 gigs of ram and 5 are constantly available.

[Perryg]

I would do a cold boot ( power down the guest )

[TheAndroidMan]

I would do a cold boot ( power down the guest )

I've been doing that the whole time I'd imagine... :/

[Perryg]

Not according to the log you posted. When it happens click on the red X in the upper title bar and select power off. Since it panics you do not have any way to tell the guest to power down and I guess you are using the machine column in the title bar to reset.

[TheAndroidMan]

Not according to the log you posted. When it happens click on the red X in the upper title bar and select power off. Since it panics you do not have any way to tell the guest to power down and I guess you are using the machine column in the title bar to reset.

Cold booting doesn't appear to solve the issue. Any other ideas?

[Perryg]

Post the newest guest log and also:

From the hosts terminal/command window type VBoxManage showvminfo <VM Name> --details and post here. Replace <VM Name> with the actual name of the VM. Use " " if the name has a space in it.

Note if the host is Windows you need to be in the directory that has VBoxManage.exe for the command to work.

[TheAndroidMan]

Post the newest guest log and also:

From the hosts terminal/command window type VBoxManage showvminfo <VM Name> --details and post here. Replace <VM Name> with the actual name of the VM. Use " " if the name has a space in it.

Note if the host is Windows you need to be in the directory that has VBoxManage.exe for the command to work.

Alright.

[Perryg]

00:00:01.207238 Host RAM: 8129MB total, 1647MB available
00:00:01.294896 RamSize <integer> = 0x0000000080000000 (2 147 483 648, 2 048 MB)

You are still over committing the RAM. You might be better off rebooting the host and not run any other programs until you get this installed.

[TheAndroidMan]

00:00:01.207238 Host RAM: 8129MB total, 1647MB available
00:00:01.294896 RamSize <integer> = 0x0000000080000000 (2 147 483 648, 2 048 MB)

You are still over committing the RAM. You might be better off rebooting the host and not run any other programs until you get this installed.

I don't see how I could be.... I have my Memory Usage on one screen and the VM on the other, I have 4 gigs available even when running the VM.

[Perryg]

Logs don't lie my friend. Anyway I am off for the day.