Created Partition in SD card is not detecting after rebooting

Vishak Raj

8/31/24, 1:57 PM

In Ubuntu 18, I inserted an SD card, and create a new partition using fdisk, then when executed the command lsblk, I got this

NAME         MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0          7:0    0    16M  1 loop 
mmcblk1      179:0    0  59.5G  0 disk 
└─mmcblk1p1  179:1    0  59.5G  0 part /mnt

the SD card has the partition, and I mounted to the /mnt directory

The next day, when I turned on the system, I get to know the SD card is detected but the partition is not detected, when lsblk command is executed, I got this

NAME         MAJ:MIN RM   SIZE RO TYPE MOUNTPOINT
loop0          7:0    0    16M  1 loop 
mmcblk1      179:128  0  59.5G  0 disk

The SD card is in Ext4 filesystem

How the created partition is not detected/shown. How to solve this, thanks

UPDATE: sudo fsck.ext4 /dev/mmcblk1 when executed, I got,

e2fsck 1.44.1 (24-Mar-2018) fsck.ext4: Input/output error while trying to open /dev/mmcblk1 The superblock could not be read or does not describe a valid ext2/ext3/ext4 filesystem. If the device is valid and it really contains an ext2/ext3/ext4 filesystem (and not swap or ufs or something else), then the superblock is corrupt, and you might try running e2fsck with an alternate superblock: e2fsck -b 8193 or e2fsck -b 32768

0 + 5

partitioning

mount

disk

sd-card

fdisk

Archisman Panigrahi

8/31/24, 2:23 PM

What happens when you remove and insert the SDCard once again?

Hannu

8/31/24, 4:39 PM

Modify your lsblk, and do `$ lsblk -ape7 -o+FSTYPE` and edit+insert the result. (The filesystem/formatting might make some difference.)

Vishak Raj

9/1/24, 6:24 AM

@ArchismanPanigrahi, the system is in remote location, it is not possible to do that, and also I put my program in that partition, if it is not detected, then my program wont run

Vishak Raj

9/1/24, 6:51 AM

@Hannu, I updated the question, could you please check that

Hannu

9/1/24, 3:39 PM

If you wish to keep the contents then I'd do what fsck says, but then the SD-card might actually be corrupt / broken in some way. If you don't mind losing the content, try re-formatting it. What happened; maybe you can `grep mmcblk1p1 /var/log` to see if there is anything else than mount/unmount happening. (note: zcat shows the content of *.gz files)

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EN: Created Partition in SD card is not detecting after rebooting

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