Thanks for the reply. The SD card behaves the same way on another system (F37) In desperation, I removed all of the date and used gparted to delete and recreate the file system. It did than, then restored all of the deleted files. I have the new result below. It appears that I need to replace the superblock, but I've been unable to discover how to do that. # e2fsck /dev/mmcblk0p1 e2fsck 1.46.5 (30-Dec-2021) MP4: recovering journal Superblock needs_recovery flag is clear, but journal has data. Run journal anyway<y>? yes e2fsck: unable to set superblock flags on MP4 MP4: ********** WARNING: Filesystem still has errors ********** On Mon, 7 Aug 2023 11:05:17 -0500 Roger Heflin <rogerheflin@xxxxxxxxx> wrote: > What does it show in messages after the mount? That is where I would > expect the underlying read errors to be. > > I have also had some issues with certain sdxc readers seeming to not > work well with some cards. There are also a significant number of MMC > changes going into the kernel recently. There is an entire new set of > code (not sure if has made it into the latest released kernel yet) for > the UHS-II cards (All UHS-II cards are working backwards compat for > UHS-I). > > You might try a different machine/reader and see if it works on a > different one. The issues I saw only happened with the larger and/or > faster cards and only in some readers. > > On Mon, Aug 7, 2023 at 10:19 AM Geoffrey Leach > <geoffleach.gl@xxxxxxxxx> wrote: > > > > I have a 1TB SanDisk XC SD card, which has developed a reluctance to > > create files. > > > > UUID=0fd984c4-cf88-408a-8ba5-15b64500bd5c /Media/SDXC ext4 > > noauto,rw,user 0 0 > > > > % sudo mount /Media/SDXC > > % touch /Media/SDXC/foo > > % ls /Media/SDXC/foo > > /Media/SDXC/foo > > % sudo umount /Media/SDXC > > % sudo mount /Media/SDXC > > % ls /Media/SDXC/foo > > /bin/ls: cannot access '/Media/SDXC/foo': No such file or directory > > > > I used root to mount, just to be sure. User mount has the same > > problem. gparted reported a problem with the superblock which was > > resolved by re-formatting and re-creating the partition table. The > > card has just one partition. > > > > Suggestions for further diagnosis would be appreciated. _______________________________________________ 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