This article only records the process of solving the problem... for your reference.
The cause is that the SCSI driver is missing.
The solution is as follows:
Step 1: Modify the SCSI driver type
VM-> Edit Settings-> SCSI controller 0-> change type, set to BusLogic
This setting is said to be because the 2.6 + kernel no longer supports LSI Logic
Step 2: Start With LiveCD and enter the compiling environment
Reference http://www.gentoo.org/doc/en/gentoo-x86-quickinstall.xml
Livecd/# mount/dev/sda3/mnt/gentoo
Livecd/# mount/dev/sda1/mnt/gentoo/boot
Livecd/# mount-t proc/mnt/gentoo/proc
Livecd/# mount -- rbind/dev/mnt/gentoo/dev
Livecd/# chroot/mnt/gentoo/bin/bash
Livecd/# env-update & source/etc/profile
Step 3: Set Kernel Parameters
Reference: http://www.gentoo-wiki.info/HOWTO_Install_Gentoo_on_VMware_ESX_server
Linux Kernel Configuration: VMware SCSI adapter
Device Drivers ---> SCSI device support ---> ** Turn off EVERYTHING under here besides what is shown below ** <*> SCSI disk support SCSI low-level drivers ---> <*> BusLogic SCSI support
Livecd linux # make menuconfig
Livecd linux # time make-j2
Livecd linux # make modules_install
Livecd linux # cp arch/i386/boot/bzImage/boot/kernel
Step 4: restart confirmation