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Old 02-28-2007, 08:01 PM   #1
gpenguin
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LFS Kernel 2.6.16.38 Boot Failure: VFS unable to mount root


Ok, I've read the threads, tried to compile various options and I'm stumped. I'm new to the 2.6.x kernel and Grub, but experienced with 2.4.x, LILO, and Linux in general.

I've got a SATA drive as hda with 3 partitions:

/dev/hda1 => /boot ext2
/dev/hda2 => swap
/dev/hda3 => / ext2

I've compiled the kernel with SATA support under the SCSI subsystem (SATA under IDE is "deprecated and conflicts with libata). Per other threads I've compiled in SATA Support, AHCI Support, and my Intel Support (got Intel ICH5).

My grub looks like this:

Title LFS
kernel (hd0,0)/lfs_kernel root=/dev/hda3

When I attempt to boot, I get the infamous "unable to mount 'hda3' or unknown-block(0,0) please provide correct "root=" line..." I'm sure you've all seen this one.

So what am I doing wrong? The kernel is being read and decompressed else I wouldn't be getting a kernel panic. The SATA stuff is enabled:

CONFIG_SCSI_SATA=y
CONFIG_SCSI_ATA_PIIX=y
CONFIG_SCSI_SATA_AHCI=y
CONFIG_SCSI_SATA_INTEL_COMBINED=y

But the kernel can't see my /dev/hda3...

--David
 
Old 03-01-2007, 05:04 AM   #2
weibullguy
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SATA is typically sda, not hda.
 
Old 03-01-2007, 12:35 PM   #3
gpenguin
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Normally I'd agree. However when booting the LFS Live CD (which I use to build the system) /dev/hda is fine. When installing Grub, hdX was used with no problem as well.

Nevertheless, I'll give it a try and post back in a few...
 
Old 03-01-2007, 12:38 PM   #4
gpenguin
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Nope...changing "root=/dev/hda3" to "root=/dev/sda3" resulted in the same error. I've got a few other ideas I'm going to try, but if anyone has ideas...let me know. Thanks!

--David
 
Old 03-01-2007, 04:19 PM   #5
gpenguin
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Good news...I've got the system to recognize the hda drive. The mistake was a missing PIIX option. However, now when the drive is recognized. I'm getting an error about the ext2 partition not being valid??? I just remade the partition and re-installed the files so I know it's fine.

Any ideas on this????
 
Old 03-01-2007, 05:42 PM   #6
gpenguin
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I'm moving this posting thread to the LFS forum.
 
  


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