The problem started when the computer powered off.I got that error message: Error Mounting /dev/sda2 at /media/aly/Home: Unknown error when mounting /dev/sda2
aly@aly-OptiPlex-780:/var/www/SocialSphere$ lsblk -f this comment output:
NAME FSTYPE FSVER LABEL UUID FSAVAIL FSUSE% MOUNTPOINTSloop0 squash 4.0 0 100% /snap/4ktube/75loop1 squash 4.0 0 100% /snap/4ktube/82loop2 squash 4.0 0 100% /snap/bare/5loop3 squash 4.0 0 100% /snap/canonical-livepatch/264loop4 squash 4.0 0 100% /snap/canonical-livepatch/278loop5 squash 4.0 0 100% /snap/code/156loop6 squash 4.0 0 100% /snap/code/157loop7 squash 4.0 0 100% /snap/core20/2182loop8 squash 4.0 0 100% /snap/core20/2264loop9 squash 4.0 0 100% /snap/core18/2812loop10 squash 4.0 0 100% /snap/core22/1122loop11 squash 4.0 0 100% /snap/firefox/4090loop12 squash 4.0 0 100% /snap/firefox/4136loop13 squash 4.0 0 100% /snap/gnome-42-2204/172loop14 squash 4.0 0 100% /snap/gnome-42-2204/176loop15 squash 4.0 0 100% /snap/gtk-common-themes/1535loop16 squash 4.0 0 100% /snap/pyqt5-runtime-core20/9loop17 squash 4.0 0 100% /snap/snap-store/959loop18 squash 4.0 0 100% /snap/snapd/21184loop19 squash 4.0 0 100% /snap/snapd-desktop-integration/157loop20 squash 4.0 0 100% /snap/snapd/21465loop21 squash 4.0 0 100% /snap/snapd-desktop-integration/83loop22 squash 4.0 0 100% /snap/telegram-desktop/5791loop23 squash 4.0 0 100% /snap/telegram-desktop/5820loop24 squash 4.0 0 100% /snap/vlc/3777loop25 0 100% /snap/core18/2823sda ├─sda1│├─sda2│ ntfs Home 24742E82742E56B8 ├─sda3│ ntfs System Reserved│ 9A668A94668A70B5 ├─sda4│ ntfs 282492AC24927C8E ├─sda5│ vfat FAT32 9D79-D2B0 ├─sda6│ vfat FAT32 E53C-E036 504.9M 1% /boot/efi└─sda7 ext4 1.0 e27ed1a0-7e15-4cbf-b542-cb09b7dae50b 6.3G 81% /var/snap/firefox/common/host-hunspell /sr0