Why won't Gentoo boot after moving to another machine?

Question

Backup

Good afternoon, there was a following problem. I created a disk image with Acronis, from the old server, successfully restored it to another machine. (The disk is connected to them via IDE) Everything worked. We bought a new PC for this server, there are no more IDE ports on the new hardware, only SATA. After recovery, it gives the following:

md: Skipping autodetection of RAID arrays. (raid=autodetect will force)
VFS: Cannot open root device "<NULL>" or unknown-block(3,3)
Please append a correct "root=" boot option;here are the available partition:

maybe someone faced such a problem?
on another PC with a SATA drive connected, the same problem

Answer 1

Pass a parameter to the kernel root=/dev/blockdevice, where /dev/blockdevice is the root filesystem device.
Well, look how the kernel is assembled - if manually, then perhaps it does not have sata support modules.