I could make the install complete on the 32GB SD card. Somehow after
flashing Ubuntu, 6.8, 6.9, current and repeated tests it now works...
Sorry for the noise.

Em seg., 3 de mai. de 2021 às 10:15, Adriano Barbosa
<barbosa....@gmail.com> escreveu:
>
> Hi misc@,
> I have a SanDisk 16GB Class 4 SD card which I can complete the install
> process on my Raspberry Pi 3 Model B v1.2 and another SanDisk Ultra
> 32GB Class 10 which can't complete the install. Tried the install on
> 6.8 and 6.9. The 32GB card seems to be fine (tested with Ubuntu
> install for a few days). Is that a known issue? Any workaround?
> In the past when the SD card reader didn't work I had a similar issue
> trying to install on a Kingston flash drive related to [1] according
> to [2]. Any relation?
>
> [1] 
> https://www.raspberrypi.org/blog/pi-3-booting-part-i-usb-mass-storage-boot/
> [2] https://undeadly.org/cgi?action=article&sid=20170409123528
>
> #
> # SanDisk 16GB Class 4 info on working install
> #
>
> $ doas disklabel -h /dev/sd0c
> # /dev/sd0c:
> type: SCSI
> disk: SCSI disk
> label: SD/MMC SU16G
> duid: f8222dcf9beba562
> flags:
> bytes/sector: 512
> sectors/track: 63
> tracks/cylinder: 255
> sectors/cylinder: 16065
> cylinders: 1936
> total sectors: 31116288 # total bytes: 15193.5M
> boundstart: 65536
> boundend: 31116288
> drivedata: 0
>
>
> #
> # SanDisk Ultra 32GB Class 10 during install
> #
>
> (I)nstall, (U)pgrade, (A)utoinstall or (S)hell? s
> # cd /dev
> # sh MAKEDEV sd0
> # disklabel -h sd0
> # /dev/rsd0c:
> type: vnd
> disk: vnd device
> label: fictitious
> duid: f90b6bb35b8cfb39
> flags:
> bytes/sector: 512
> sectors/track: 100
> tracks/cylinder: 1
> sectors/cylinder: 100
> cylinders: 880
> total sectors: 60751872 # total bytes: 29664.0M
> boundstart: 49152
> boundend: 88064
> drivedata: 0
>
> 16 partitions:
> #                size           offset  fstype [fsize bsize   cpg]
>   a:            19.0M            49152  4.2BSD   2048 16384  1216
>   c:         29664.0M                0  unused
>   i:             8.0M            32768   MSDOS
> # install
> ...
>
> Available disks are: sd0.
> Which disk is the root disk? ('?' for details) [sd0] ?
> sd0: SD/MMC, SL32G, 0030  (29.0G)
> Available disks are: sd0.
> Which disk is the root disk? ('?' for details) [sd0]
> Disk: sd0       geometry: 3781/255/63 [60751872 Sectors]
> Offset: 0       Signature: 0xAA55
>             Starting         Ending         LBA Info:
>  #: id      C   H   S -      C   H   S [       start:        size ]
> -------------------------------------------------------------------------------
> *0: 0C      2  10   9 -      3  15  12 [       32768:       16384 ] FAT32L
>  1: 00      0   0   0 -      0   0   0 [           0:           0 ] unused
>  2: 00      0   0   0 -      0   0   0 [           0:           0 ] unused
>  3: A6      3  15  13 -      5 122  53 [       49152:       38912 ] OpenBSD
> Use (W)hole disk or (E)dit the MBR? [whole]
> Creating a msdos partition and an OpenBSD partition for rest of sd0...done.
> /dev/rsd0i: 32668 sectors in 8167 FAT16 clusters (2048 bytes/cluster)
> bps=512 spc=4 res=1 nft=2 rde=512 mid=0xf8 spf=32 spt=63 hds=255
> hid=32768 bsec=32768
> The auto-allocated layout for sd0 is:
> #                size           offset  fstype [fsize bsize   cpg]
>   a:          1024.0M            65536  4.2BSD   2048 16384     1 # /
>   b:          1165.3M          2162688    swap
>   c:         29664.0M                0  unused
>   d:          1628.0M          4549312  4.2BSD   2048 16384     1 # /tmp
>   e:          2530.5M          7883424  4.2BSD   2048 16384     1 # /var
>   f:          3385.0M         13065888  4.2BSD   2048 16384     1 # /usr
>   g:           949.5M         19998368  4.2BSD   2048 16384     1 # /usr/X11R6
>   h:          3851.5M         21942944  4.2BSD   2048 16384     1 # /usr/local
>   i:            16.0M            32768   MSDOS
>   j:          1677.0M         29830816  4.2BSD   2048 16384     1 # /usr/src
>   k:          5874.0M         33265312  4.2BSD   2048 16384     1 # /usr/obj
>   l:          7547.2M         45295264  4.2BSD   2048 16384     1 # /home
> Use (A)uto layout, (E)dit auto layout, or create (C)ustom layout? [a]
> /dev/rsd0a: 1024.0MB in 2097152 sectors of 512 bytes
> 6 cylinder groups of 202.50MB, 12960 blocks, 25920 inodes each
> newfs: wtfs: write error on block 192: Input/output error
> newfs: 20e419e02833a06a.l: No such file or directory
> newfs: 20e419e02833a06a.d: No such file or directory
> newfs: 20e419e02833a06a.f: No such file or directory
> newfs: 20e419e02833a06a.g: No such file or directory
> newfs: 20e419e02833a06a.h: No such file or directory
> newfs: 20e419e02833a06a.k: No such file or directory
> newfs: 20e419e02833a06a.j: No such file or directory
> newfs: 20e419e02833a06a.e: No such file or directory
> mount_ffs: 20e419e02833a06a.a on /mnt: No such file or directory
>
> mount_ffs: 20e419e02833a06a.l on /mnt/home: No such file or directory
>
> mount_ffs: 20e419e02833a06a.d on /mnt/tmp: No such file or directory
>
> mount_ffs: 20e419e02833a06a.f on /mnt/usr: No such file or directory
>
> mount_ffs: 20e419e02833a06a.g on /mnt/usr/X11R6: No such file or directory
>
> mount_ffs: 20e419e02833a06a.h on /mnt/usr/local: No such file or directory
>
> mount_ffs: 20e419e02833a06a.k on /mnt/usr/obj: No such file or directory
>
> mount_ffs: 20e419e02833a06a.j on /mnt/usr/src: No such file or directory
>
> mount_ffs: 20e419e02833a06a.e on /mnt/var: No such file or directory
>
>
> WARNING! The following filesystems were not properly mounted:
> /mnt (20e419e02833a06a.a)
> /mnt/home (20e419e02833a06a.l)
> /mnt/tmp (20e419e02833a06a.d)
> /mnt/usr (20e419e02833a06a.f)
> /mnt/usr/X11R6 (20e419e02833a06a.g)
> /mnt/usr/local (20e419e02833a06a.h)
> /mnt/usr/obj (20e419e02833a06a.k)
> /mnt/usr/src (20e419e02833a06a.j)
> /mnt/var (20e419e02833a06a.e)
> Continue anyway? [no] !
>
> rpi# disklabel -h sd0
> disklabel: /dev/rsd0c: Input/output error
>
> --
> Adriano Barbosa



-- 
Adriano Barbosa

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