On Thu, Mar 13, 2025 at 7:48 PM Dave Close <dave@xxxxxxxxxxx> wrote: > > I have been trying to create an SDcard to use with an Raspberry > Pi. The card is created using the rpi-imager program on Fedora (41) > and that program reports the creation as successful. Later, after > mounting the ext4 partition on the card under Fedora and doing two or > three minutes of exploration, I encounter a bad block. So I unmount > the partition and use e2fsck to locate any bad blocks and mark them: > > e2fsck -y -c /dev/sdb2 > > But after that when I try to remount the partition, it seems that > e2fsck has destroyed the filesystem! > > # mount /dev/sdb2 /mnt > mount: /mnt: wrong fs type, bad option, bad superblock on /dev/sdb2, > missing codepage or helper program, or other error. > dmesg(1) may have more information after failed mount system call. > > Checking dmesg, I see that the mount has tried several possible > filesystem types without success, including several lines like, > "EXT4-fs (sdb2): VFS: Can't find ext4 filesystem". Explicitly adding > "-t ext4" to the mount does not help. > > I've repeated this process, again getting success, including > verification, from rpi-imager. This time I omitted the -c from the > e2fsck command and was able to mount the partition after. > > So it appears that asking e2fsck to check for and mark bad blocks > causes it to destroy the superblock(s). Is there another explanation? Throw the old SDcard away, and use a new one. The old SDcard is clapped out. I used to do a lot of testing of C and C++ libraries on ARM SBCs, like BeagleBoards, BananaPi's, Raspberry Pi's and WandBoards. The low resources (like 512 MB or 1 GB or RAM) and C++ compiler ensured I needed a swap file to build the libraries. I used to go through SDcards like they were dirty underwear. Once I started seeing filesystem errors I threw away the old card and used a new card with the board. Jeff -- _______________________________________________ users mailing list -- users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to users-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/users@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
