On Fri, Jan 28, 2022 at 07:39:12AM +0100, to...@tuxteam.de wrote: > On Wed, Jan 26, 2022 at 09:07:31PM -0600, Martin McCormick wrote: > > Command (m for help): p > > Disk /dev/sdh: 28.8 GiB, 30908350464 bytes, 60367872 sectors > > Disk model: USB HS-SD Card > > Units: sectors of 1 * 512 = 512 bytes > > Sector size (logical/physical): 512 bytes / 512 bytes > > I/O size (minimum/optimal): 512 bytes / 512 bytes > > Disklabel type: dos > > Disk identifier: 0x680226ff > > > > /dev/sdh1 8192 137215 129024 63M c W95 FAT32 (LBA) > > /dev/sdh2 137216 62333951 62196736 29.7G 83 Linux > > > > Command (m for help): d > > Partition number (1,2, default 2): > > > > Partition 2 has been deleted. > > > > Command (m for help): d > > Selected partition 1 > > Partition 1 has been deleted. > > > > Command (m for help): w > > fdisk: failed to write disklabel: Operation not permitted > > This looks to me like the write to the SD card failing. Since you > excluded write protection in this thread, I'd venture the hunch that the > SD has gone bad, in some way. > > Any entries in your /var/log/syslog or /var/log/messages at this point? > > Have you tried to write to the SD card, e.g. > > dd if=/dev/zero of=/dev/sdh bs=1024 count=1 oflag=sync > > would overwrite the first 1K bytes with zeros. Any errors, then? > > If I had to bet at this point, I'd say the SD card isn't good. This > happens. > > Cheers > -- > t
I've had a few cards that are just annoying: there is a (Windows only) utility from the industry consortium that "does" SD which is often recommended and has recovered one or two for me - especially some which appear to have an Apple Mac partition ID SD cards - unless particularly strange physical sizes - are probably cheap enough that you can write it off to experience. SSD drives in SD card format - don't know. And yes, I've a "blessed" SD -> MicroSD card adapter which seems to work better than most of the others and a good Sandisk USB2 -> SD card holder. It is a bit random as to what will work and what doesn't. Just my €0.02 of experience, All the very best, as ever, Andy Cater
