Hi, I'm not sure am I supposed to ask this question here, But I did not find anywhere more suitable! I'm using a complete root fs compressed in gz as my initrd for last couple of years. until kernel 4.4.x when I chose to boot kernel with my initrd, I got these messages in boot process: ... [ 0.000000] Krrne oomman iie: BOOT_IMAGE=vvmlinuz-4.4117 initrd=/utvos44.0.6.gz console=tty console=ttyS09900 ... [ 38.920053] Trying to unpack rootfs image as initramfs... [ 39.103577] rootfs image is not initramfs (no cpio magic); looks like an initrd [ 39.488596] Freeing initrd memory: 46576K (ffff88007d284000 - ffff880080000000) .... [ 60.815224] RAMDISK: gzip image found at block 0 [ 64.617699] EXT4-fs (ram0): couldn't mount as ext3 due to feature incompatibilities [ 64.835669] EXT4-fs (ram0): couldn't mount as ext2 due to feature incompatibilities [ 65.168935] EXT4-fs (ram0): mounted filesystem with ordered data mode. Opts: (null) [ 65.498876] VFS: Mounted root (ext4 filesystem) on device 1:0. mounting fstab entries ... and system boots correctly. But when I switched to kernel 4.9.30, everything went wrong: .... [ 0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-4.9.30 initrd=/utvos.4.1.0.gz root=/dev/ram0 console=tty console=ttyS0,9600 .... [ 29.156899] Unpacking initramfs... [ 29.330796] Initramfs unpacking failed: no cpio magic ... [ 50.444213] VFS: Cannot open root device "ram0" or unknown-block(0,0): error -6 [ 50.656876] Please append a correct "root=" boot option; here are the available partitions: [ 51.012293] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0) .... I've tried adding root=/dev/ram0, removing it, adding keepinitrd kernel switch, changing archive compression to cpio, and multiple other kernel paramters, but nothing helped. Basically it seems old kernel detects image is initrd (rootfs image is not initramfs (no cpio magic); looks like an initrd), but new kernel doesn't even try to mount image as initrd. What is wrong? how should I fix this problem. Best regards. -- To unsubscribe from this list: send the line "unsubscribe initramfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
