Once I've posted on X about how easy it is to recover data from a corrupted card. I know it's a stretch to say it's always true, but I want to document this simple process for future self. It has happened to me more than once. More than twice. In fact, I don't remember how many times it has happened.
Diagnostic #
When downloading files from Insta360 with a USB cable, the drive suddenly disconnects. After running the lsblk command, you will see only the drive, but no partition.
❯ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
loop0 7:0 0 4K 1 loop /var/lib/snapd/snap/bare/5
loop1 7:1 0 572K 1 loop /var/lib/snapd/snap/color-picker/26
loop2 7:2 0 63.9M 1 loop /var/lib/snapd/snap/core20/2105
loop3 7:3 0 63.9M 1 loop /var/lib/snapd/snap/core20/2182
loop4 7:4 0 74.2M 1 loop /var/lib/snapd/snap/core22/1122
loop5 7:5 0 2.1M 1 loop /var/lib/snapd/snap/cozy/10
loop6 7:6 0 497M 1 loop /var/lib/snapd/snap/gnome-42-2204/141
loop7 7:7 0 91.7M 1 loop /var/lib/snapd/snap/gtk-common-themes/1535
loop8 7:8 0 301.4M 1 loop /var/lib/snapd/snap/qt5-core20/16
loop9 7:9 0 40.4M 1 loop /var/lib/snapd/snap/snapd/20671
sda 8:0 1 1.8T 0 disk
└─sda1 8:1 1 1.8T 0 part /mnt/s1
sdb 8:16 0 5.5T 0 disk
└─sdb1 8:17 0 5.5T 0 part /mnt/s2
sdc 8:32 1 0B 0 disk ########## <----- THIS ONE!!!!!!!!
sde 8:64 1 117.8G 0 disk
└─sde1 8:65 1 117.7G 0 part /run/media/undg/F2_SD
zram0 254:0 0 4G 0 disk [SWAP]
nvme2n1 259:0 0 931.5G 0 disk
└─nvme2n1p1 259:1 0 931.5G 0 part /home
nvme0n1 259:2 0 931.5G 0 disk
└─nvme0n1p1 259:3 0 931.5G 0 part /mnt/s0
nvme1n1 259:4 0 223.6G 0 disk
├─nvme1n1p1 259:5 0 512M 0 part /boot
└─nvme1n1p2 259:6 0 223.1G 0 part /Remove the card from the Insta360 and connect it to a card reader. (It may work in the Insta360, but I don't know.)
Now you should see the partition, but without any MOUNTPOINTS. I'm auto-mounting, but the same applies if you mount it manually as in X post.
❯ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
loop0 7:0 0 4K 1 loop /var/lib/snapd/snap/bare/5
loop1 7:1 0 572K 1 loop /var/lib/snapd/snap/color-picker/26
loop2 7:2 0 63.9M 1 loop /var/lib/snapd/snap/core20/2105
loop3 7:3 0 63.9M 1 loop /var/lib/snapd/snap/core20/2182
loop4 7:4 0 74.2M 1 loop /var/lib/snapd/snap/core22/1122
loop5 7:5 0 2.1M 1 loop /var/lib/snapd/snap/cozy/10
loop6 7:6 0 497M 1 loop /var/lib/snapd/snap/gnome-42-2204/141
loop7 7:7 0 91.7M 1 loop /var/lib/snapd/snap/gtk-common-themes/1535
loop8 7:8 0 301.4M 1 loop /var/lib/snapd/snap/qt5-core20/16
loop9 7:9 0 40.4M 1 loop /var/lib/snapd/snap/snapd/20671
sda 8:0 1 1.8T 0 disk
└─sda1 8:1 1 1.8T 0 part /mnt/s1
sdb 8:16 0 5.5T 0 disk
└─sdb1 8:17 0 5.5T 0 part /mnt/s2
sdc 8:32 1 233.2G 0 disk ########## <----- THIS ONE!!!!!!!!
└─sdc1 8:33 1 233.2G 0 part ########## <----- THIS ONE!!!!!!!!
sde 8:64 1 117.8G 0 disk
└─sde1 8:65 1 117.7G 0 part /run/media/undg/F2_SD
zram0 254:0 0 4G 0 disk [SWAP]
nvme2n1 259:0 0 931.5G 0 disk
└─nvme2n1p1 259:1 0 931.5G 0 part /home
nvme0n1 259:2 0 931.5G 0 disk
└─nvme0n1p1 259:3 0 931.5G 0 part /mnt/s0
nvme1n1 259:4 0 223.6G 0 disk
├─nvme1n1p1 259:5 0 512M 0 part /boot
└─nvme1n1p2 259:6 0 223.1G 0 part /If you try to mount manually, you will get an error.
❯ sudo mount -t exfat /dev/sdc1 /run/media/undg/INSTA360-X3
FUSE exfat 1.4.0 (libfuse3)
ERROR: invalid VBR checksum 0x1f918e82 (expected 0xa0fc47d0) ##### hex may varyFIX #
Use exfatfsck utility that will diagnose this problem and will ask you if you want to repair it:
❯ sudo exfatfsck /dev/sdc1
exfatfsck 1.4.0
Checking file system on /dev/sdc1.
ERROR: invalid VBR checksum 0x1f918e82 (expected 0xa0fc47d0).
Fix (Y/N)? Y
WARN: volume was not unmounted cleanly.
File system version 1.0
Sector size 512 bytes
Cluster size 128 KB
Volume size 233 GB
Used space 45 GB
Available space 188 GB
Totally 3 directories and 7 files.
File system checking finished. ERRORS FOUND: 1, FIXED: 1.Now you can mount it and check again with lsblk to see if the partition is there.
❯ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS
loop0 7:0 0 4K 1 loop /var/lib/snapd/snap/bare/5
loop1 7:1 0 572K 1 loop /var/lib/snapd/snap/color-picker/26
loop2 7:2 0 63.9M 1 loop /var/lib/snapd/snap/core20/2105
loop3 7:3 0 63.9M 1 loop /var/lib/snapd/snap/core20/2182
loop4 7:4 0 74.2M 1 loop /var/lib/snapd/snap/core22/1122
loop5 7:5 0 2.1M 1 loop /var/lib/snapd/snap/cozy/10
loop6 7:6 0 497M 1 loop /var/lib/snapd/snap/gnome-42-2204/141
loop7 7:7 0 91.7M 1 loop /var/lib/snapd/snap/gtk-common-themes/1535
loop8 7:8 0 301.4M 1 loop /var/lib/snapd/snap/qt5-core20/16
loop9 7:9 0 40.4M 1 loop /var/lib/snapd/snap/snapd/20671
sda 8:0 1 1.8T 0 disk
└─sda1 8:1 1 1.8T 0 part /mnt/s1
sdb 8:16 0 5.5T 0 disk
└─sdb1 8:17 0 5.5T 0 part /mnt/s2
sdc 8:32 1 233.2G 0 disk ########## <----- THIS ONE!!!!!!!!
└─sdc1 8:33 1 233.2G 0 part /run/media/undg/INSTA360-X3 ########## <----- THIS ONE!!!!!!!!
sde 8:64 1 117.8G 0 disk
└─sde1 8:65 1 117.7G 0 part /run/media/undg/F2_SD
zram0 254:0 0 4G 0 disk [SWAP]
nvme2n1 259:0 0 931.5G 0 disk
└─nvme2n1p1 259:1 0 931.5G 0 part /home
nvme0n1 259:2 0 931.5G 0 disk
└─nvme0n1p1 259:3 0 931.5G 0 part /mnt/s0
nvme1n1 259:4 0 223.6G 0 disk
├─nvme1n1p1 259:5 0 512M 0 part /boot
└─nvme1n1p2 259:6 0 223.1G 0 part /Tada 🎊
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