ubuntu@ubuntu:~$ sudo -s
root@ubuntu:/home/ubuntu# sudo apt update
무시:1 cdrom://Ubuntu 20.04.4 LTS _Focal Fossa_ - Release amd64 (20220223) focal InRelease
기존:2 cdrom://Ubuntu 20.04.4 LTS _Focal Fossa_ - Release amd64 (20220223) focal Release
기존:4 http://security.ubuntu.com/ubuntu focal-security InRelease
기존:5 http://archive.ubuntu.com/ubuntu focal InRelease
받기:6 http://archive.ubuntu.com/ubuntu focal-updates InRelease [114 kB]
받기:7 http://archive.ubuntu.com/ubuntu focal/main Translation-ko [204 kB]
받기:8 http://archive.ubuntu.com/ubuntu focal/restricted Translation-ko [716 B]
내려받기 319 k바이트, 소요시간 2초 (154 k바이트/초)
패키지 목록을 읽는 중입니다... 완료
의존성 트리를 만드는 중입니다
상태 정보를 읽는 중입니다... 완료
560 packages can be upgraded. Run 'apt list --upgradable' to see them.
root@ubuntu:/home/ubuntu# sudo apt install kmod
패키지 목록을 읽는 중입니다... 완료
의존성 트리를 만드는 중입니다
상태 정보를 읽는 중입니다... 완료
The following additional packages will be installed:
  libkmod2
다음 패키지를 업그레이드할 것입니다:
  kmod libkmod2
2개 업그레이드, 0개 새로 설치, 0개 제거 및 558개 업그레이드 안 함.
140 k바이트 아카이브를 받아야 합니다.
이 작업 후 8,192 바이트의 디스크 공간을 더 사용하게 됩니다.
계속 하시겠습니까? [Y/n] Y
받기:1 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 kmod amd64 27-1ubuntu2.1 [94.8 kB]
받기:2 http://archive.ubuntu.com/ubuntu focal-updates/main amd64 libkmod2 amd64 27-1ubuntu2.1 [45.3 kB]
내려받기 140 k바이트, 소요시간 2초 (70.4 k바이트/초)
(데이터베이스 읽는중 ...현재 187727개의 파일과 디렉터리가 설치되어 있습니다.)
Preparing to unpack .../kmod_27-1ubuntu2.1_amd64.deb ...
Unpacking kmod (27-1ubuntu2.1) over (27-1ubuntu2) ...
Preparing to unpack .../libkmod2_27-1ubuntu2.1_amd64.deb ...
Unpacking libkmod2:amd64 (27-1ubuntu2.1) over (27-1ubuntu2) ...
libkmod2:amd64 (27-1ubuntu2.1) 설정하는 중입니다 ...
kmod (27-1ubuntu2.1) 설정하는 중입니다 ...
update-initramfs is disabled since running on read-only media
Processing triggers for libc-bin (2.31-0ubuntu9.2) ...
Processing triggers for systemd (245.4-4ubuntu3.15) ...
Processing triggers for man-db (2.9.1-1) ...
root@ubuntu:/home/ubuntu# sudo fdisk-l
sudo: fdisk-l: command not found
root@ubuntu:/home/ubuntu# sudo fdisk -l
Disk /dev/loop0: 2.13 GiB, 2285019136 bytes, 4462928 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop1: 4 KiB, 4096 bytes, 8 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop2: 61.93 MiB, 64917504 bytes, 126792 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop3: 65.22 MiB, 68378624 bytes, 133552 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop4: 248.78 MiB, 260841472 bytes, 509456 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop5: 54.24 MiB, 56872960 bytes, 111080 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/loop6: 43.6 MiB, 45703168 bytes, 89264 sectors
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes


Disk /dev/sda: 232.91 GiB, 250059350016 bytes, 488397168 sectors
Disk model: Samsung SSD 860
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: gpt
Disk identifier: 2614F8D0-9E74-463D-BAED-D38134529D4D

Device         Start       End   Sectors   Size Type
/dev/sda1       2048   1085439   1083392   529M Windows recovery environment
/dev/sda2    1085440   1288191    202752    99M EFI System
/dev/sda3    1288192   1320959     32768    16M Microsoft reserved
/dev/sda4    1320960 234304693 232983734 111.1G Microsoft basic data
/dev/sda5  234305536 235417599   1112064   543M Windows recovery environment
/dev/sda6  235419648 488396799 252977152 120.6G Linux filesystem


Disk /dev/sdb: 14.66 GiB, 15728640000 bytes, 30720000 sectors
Disk model:
Units: sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disklabel type: dos
Disk identifier: 0x003adf88

Device     Boot Start      End  Sectors  Size Id Type
/dev/sdb1  *     2048 30719999 30717952 14.7G  c W95 FAT32 (LBA)
root@ubuntu:/home/ubuntu# sudo mount /dev/sda6 /mnt
root@ubuntu:/home/ubuntu# sudo mount --bind /dev /mnt/dev
root@ubuntu:/home/ubuntu# sudo mount --bind /dev/pts /mnt/dev/pts
root@ubuntu:/home/ubuntu# sudo mount --bind /proc /mnt/proc
root@ubuntu:/home/ubuntu# sudo mount --bind /sys /mnt/sys
root@ubuntu:/home/ubuntu# sudo mount /dev/sda6 /mnt/boot
root@ubuntu:/home/ubuntu# sudo chroot /mnt
root@ubuntu:/# update-initramfs -u -k 5.15.0-88-generic
update-initramfs: Generating /boot/initrd.img-5.15.0-88-generic
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
/usr/sbin/mkinitramfs: 75: modprobe: not found
/usr/sbin/mkinitramfs: 76: modprobe: not found
E: /usr/share/initramfs-tools/hooks/fuse failed with return 1.
update-initramfs: failed for /boot/initrd.img-5.15.0-88-generic with 1.

root@ubuntu:~# uname -a
Linux ubuntu 5.13.0-30-generic #33~20.04.1-Ubuntu SMP Mon Feb 7 14:25:10 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux