Hi All,
Trying to get my build LFS to run on MS Hyper-V. Same settings I used to install on VMWare works but for Hyper-V it seems to fail during boot up. Seems the harddisk is not detecting somehow. I think its a missing driver but can't figure out what it could be or why the generic drivers aren't working. Any help would be appreciated.
TIA.

VFS: Cannot open root device "304" or unknown-block(3,4)
Please append a correct "root=" boot option; here are the available partitions
1600 4194302 hdc driver: ide-cdroom.
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(3,4)

Earlier in the boot process:
hda: Virtual HD, ATA DISK drive
hda: MWDMA2 mode selected
hdc: Virtual CD, ATAPI CD/DVD-ROM drive
hdc: MWDMA2 mode selected
...

lilo.conf:
boot=/dev/hda
map=/boot/map
install=/boot/boot.b
compact
prompt
timeout=50
image=/boot/vmlinuz-3.1.0
label=Firebase
root=/dev/hda4
read-write

Haven't done it on LFS but you need the Hyper-V Linux integration drivers.

Doing a search for "hyper-v drivers for linux" will yield results that may be helpful including this one:
http://www.microsoft.com/en-us/downl...4f450f5ee=True

Thanks, I'm rather limited in my Linux know-how. I can't seem to figure out how to install those drivers provided from microsoft. They seem to be only for Cent/Redhat in the pdf instructions and it seems to require me to boot up and then run the script files but I can't even get to a prompt currently for my LFS machine after installing it for Hyper-V.

Your kernel is more than likely missing the appropriate driver. Configuring an LFS kernel from scratch is a bit of trial and error, as well as LOTS of research, documenting, and reading.

If you want an out of the box ready kernel, try using the Slackware Huge kernel configuration from the current-testing branch with "make oldconfig" ran against it with the default options set for each new settings. A few of us "cheat" the B/LFS book by doing this.

Just saw a similar question. Needs two modules to support the virtualized hardware in hyper-v.

See posts on this. "hv_vmbus and hv_storvsc modules.