It's cold outside

I'm all alone, more or less
Let me fly, far away from here
Fun, fun, fun, in the sun, sun, sun

I want to lie, shipwrecked and comatose
Drinking fresh mango juice
Goldfish shoals nibbling at my toes
Fun, fun, fun, in the sun, sun, sun
Fun, fun, fun, in the sun, sun, sun

Good times. Do kids these days still watch that, or are you old?

>>2
I am somewhat old. However I was introduced to it by an older esteemed colleague.

https://docs.intuitivetechnology.com/article/92-how-to-mount-linux-filesystem-from-a-live-cd-and-copy-a-backup

https://askubuntu.com/questions/654094/how-to-roll-back-or-downgrade-kernel-on-14-04-re-wine-stopped-working

ubuntu@ubuntu:~$ su
Password:
su: Authentication failure
ubuntu@ubuntu:~$ mkdir /mnt/recover
mkdir: cannot create directory ‘/mnt/recover’: Permission denied
ubuntu@ubuntu:~$ sudo mkdir /mnt/recover
ubuntu@ubuntu:~$ fdisk -l
fdisk: cannot open /dev/loop0: Permission denied
fdisk: cannot open /dev/loop1: Permission denied
fdisk: cannot open /dev/loop2: Permission denied
fdisk: cannot open /dev/loop3: Permission denied
fdisk: cannot open /dev/loop4: Permission denied
fdisk: cannot open /dev/loop5: Permission denied
fdisk: cannot open /dev/loop6: Permission denied
fdisk: cannot open /dev/loop7: Permission denied
fdisk: cannot open /dev/sda: Permission denied
fdisk: cannot open /dev/sdb: Permission denied
ubuntu@ubuntu:~$ sudo fdisk -l
Disk /dev/loop0: 1.8 GiB, 1864450048 bytes, 3641504 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: 86.9 MiB, 91099136 bytes, 177928 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: 34.7 MiB, 36323328 bytes, 70944 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: 140.9 MiB, 147722240 bytes, 288520 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: 2.3 MiB, 2433024 bytes, 4752 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: 13 MiB, 13619200 bytes, 26600 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: 14.5 MiB, 15196160 bytes, 29680 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/loop7: 3.7 MiB, 3887104 bytes, 7592 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: 1.8 TiB, 2000398934016 bytes, 3907029168 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
Disklabel type: dos
Disk identifier: 0xdb12ce1d

Device Boot Start End Sectors Size Id Type
/dev/sda1 * 2048 206847 204800 100M 7 HPFS/NTFS/exFAT
/dev/sda2 206848 211175423 210968576 100.6G 7 HPFS/NTFS/exFAT
/dev/sda3 211175424 425535487 214360064 102.2G 83 Linux
/dev/sda4 425535488 3907024895 3481489408 1.6T 7 HPFS/NTFS/exFAT


Disk /dev/sdb: 931.5 GiB, 1000202043392 bytes, 1953519616 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
Disklabel type: dos
Disk identifier: 0x000e2115

Device Boot Start End Sectors Size Id Type
/dev/sdb1 2048 1953509375 1953507328 931.5G 7 HPFS/NTFS/exFAT
ubuntu@ubuntu:~$ sudo mount /dev/sda3 /mnt/recover
ubuntu@ubuntu:~$ uname -r
4.15.0-29-generic
ubuntu@ubuntu:~$ dpkg -l | grep linux-image
ii linux-image-4.15.0-29-generic 4.15.0-29.31 amd64 Signed kernel image generic
ii linux-image-generic 4.15.0.29.31 amd64 Generic Linux kernel image
ubuntu@ubuntu:~$ whoami
ubuntu
ubuntu@ubuntu:~$ uname -r
4.15.0-29-generic
ubuntu@ubuntu:~$ uname -rchroot /mnt/recover/ /bin/bash
uname: invalid option -- 'c'
Try 'uname --help' for more information.
ubuntu@ubuntu:~$ chroot /mnt/recover/ /bin/bash
chroot: cannot change root directory to '/mnt/recover/': Operation not permitted
ubuntu@ubuntu:~$ sudo chroot /mnt/recover/ /bin/bash
root@ubuntu:/# uname -r
4.15.0-29-generic
root@ubuntu:/# dpkg -l | grep linux-image
rc linux-image-4.15.0-29-generic 4.15.0-29.31 amd64 Signed kernel image generic
rc linux-image-4.15.0-30-generic 4.15.0-30.32 amd64 Signed kernel image generic
ii linux-image-4.15.0-32-generic 4.15.0-32.35 amd64 Signed kernel image generic
rc linux-image-4.15.0-33-generic 4.15.0-33.36 amd64 Signed kernel image generic
ii linux-image-4.15.0-34-generic 4.15.0-34.37 amd64 Signed kernel image generic
ii linux-image-4.15.0-36-generic 4.15.0-36.39 amd64 Signed kernel image generic
ii linux-image-4.15.0-43-generic 4.15.0-43.46 amd64 Signed kernel image generic
ii linux-image-generic 4.15.0.43.45 amd64 Generic Linux kernel image
root@ubuntu:/# dpkg -l | grep linux-headers
ii linux-headers-4.15.0-34 4.15.0-34.37 all Header files related to Linux kernel version 4.15.0
ii linux-headers-4.15.0-34-generic 4.15.0-34.37 amd64 Linux kernel headers for version 4.15.0 on 64 bit x86 SMP
ii linux-headers-4.15.0-36 4.15.0-36.39 all Header files related to Linux kernel version 4.15.0
ii linux-headers-4.15.0-36-generic 4.15.0-36.39 amd64 Linux kernel headers for version 4.15.0 on 64 bit x86 SMP
ii linux-headers-4.15.0-43 4.15.0-43.46 all Header files related to Linux kernel version 4.15.0
ii linux-headers-4.15.0-43-generic 4.15.0-43.46 amd64 Linux kernel headers for version 4.15.0 on 64 bit x86 SMP
ii linux-headers-generic 4.15.0.43.45 amd64 Generic Linux kernel headers
root@ubuntu:/# uname -r
4.15.0-29-generic
root@ubuntu:/# sudo apt-get purge linux-image-4.15.0-29-generic
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following packages were automatically installed and are no longer required:
linux-headers-4.15.0-34 linux-headers-4.15.0-34-generic linux-image-4.15.0-32-generic
linux-image-4.15.0-34-generic linux-modules-4.15.0-32-generic linux-modules-4.15.0-34-generic
linux-modules-extra-4.15.0-34-generic
Use 'sudo apt autoremove' to remove them.
2019/03/25 11:48:31.040442 cmd.go:156: cannot read /proc/self/exe: readlink /proc/self/exe: no such file or directory
The following packages will be REMOVED
linux-image-4.15.0-29-generic*
0 to upgrade, 0 to newly install, 1 to remove and 10 not to upgrade.
After this operation, 0 B of additional disk space will be used.
Do you want to continue? [Y/n] y
E: Cannot write log (Is /dev/pts mounted?) - posix_openpt (19: No such device)
(Reading database ... 299344 files and directories currently installed.)
Purging configuration files for linux-image-4.15.0-29-generic (4.15.0-29.31) ...
2019/03/25 11:48:48.365628 cmd.go:156: cannot read /proc/self/exe: readlink /proc/self/exe: no such file or directory
root@ubuntu:/#

https://bbs.archlinux.org/viewtopic.php?id=82056

https://bbs.archlinux.org/viewtopic.php?id=75513