Question on conversion from initrd to initramfs (1/2027 initrd support drop from kernel)

In doing a test with kernel 7.0.rc1 and later 7.0.rc2 noticed dmesg 
lines about initrd support being removed by 1/2027. So looked into 
doing the conversion.

Tried about 20 things I found online, but many resulted in kernel 
panics. But final working solution resulted in minor changes.

Original method would create ramdisk.lzma from a directory 
structor and the new method creates initramfs.lzma. 

Then changes included creating an init file that is a link to the 
origina etc/init.d/rcS2 which has one line added to end the earlier 
rcS init file. (Old setup goes back to 2004, when I took over 
project).

The added line is.
exec /sbin/init

Seems that is to keep PID 1 running? 

Other change was to comment  first line of 
cat etc/inittab

#::sysinit:/etc/init.d/rcS
::ctrlaltdel:/sbin/reboot
tty1::respawn:/bin/login g4l
tty2::askfirst:/bin/login
tty3::askfirst:/bin/login
tty4::askfirst:/bin/login
tty5::askfirst:/bin/login

Then only change I've noted is that under old initrd boot the df 
command would show this
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/root.old           127507     75746     51761  59% /
with initramfs get this.
Filesystem           1K-blocks      Used Available Use% Mounted on

The initramfs starts by this
echo "Packing rootfs into cpio archive"
(
    cd bootcd/rootfs
    # Include hidden files (.bash_profile etc.) via find so nothing is 
missed.
    find . | cpio --quiet -o -H newc
) > bootcd/isolinux/ramdisk.cpio

later the is compressed
lzma -v bootcd/isolinux/ramdisk.cpio
mv bootcd/isolinux/ramdisk.cpio.lzma /boot/initramfs.lzma
(will clean files names soon).

So loading kernel and initramfs.lzma works from
syslinux booting with hybrid image via cd or usb
grub4dos bios and uefi usbs
grub directly.

	linux /bz6x19.5 
	initrd /initramfs.lzma

Don't know if I missed anything? Or did something not necessary.
Thanks. 


+------------------------------------------------------------+
 Michael D. Setzer II - Computer Science Instructor (Retired)     
 mailto:[email protected]                            
 mailto:[email protected]
 mailto:[email protected]
 Guam - Where America's Day Begins                        
 G4L Disk Imaging Project maintainer 
 http://sourceforge.net/projects/g4l/
+------------------------------------------------------------+