Using the most recent snapshot sd card image on a BeagleBone Black, gpart does not recognize the FAT-formatted boot partition type: root@beaglebone:~ # gpart show => 63 61896641 mmcsd0 MBR (30G) 63 4095 1 !12 [active] (2.0M) 4158 61886402 2 freebsd (30G) 61890560 6144 - free - (3.0M) => 0 61886402 mmcsd0s2 BSD (30G) 0 66 - free - (33K) 66 61886336 1 freebsd-ufs (30G) => 1 3751935 mmcsd1 MBR (1.8G) 1 62 - free - (31K) 63 144522 1 !12 [active] (71M) 144585 3598560 2 linux-data (1.7G) 3743145 8791 - free - (4.3M) => 1 3751935 diskid/DISK-56856FEC MBR (1.8G) 1 62 - free - (31K) 63 144522 1 !12 [active] (71M) 144585 3598560 2 linux-data (1.7G) 3743145 8791 - free - (4.3M) For comparison Linux fdisk reports this as: root@beaglebone:~# fdisk -l /dev/mmcblk0 Disk /dev/mmcblk0: 1920 MB, 1920991232 bytes 255 heads, 63 sectors/track, 233 cylinders, total 3751936 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk identifier: 0x00000000 Device Boot Start End Blocks Id System /dev/mmcblk0p1 * 63 144584 72261 c W95 FAT32 (LBA) /dev/mmcblk0p2 144585 3743144 1799280 83 Linux Wikipedia concurs that this is FAT32 with LBA. Despite this, the filesystem contained in the stock eMMC on the BBB is actually FAT12: /dev/mmcsd0s1: DOS/MBR boot sector, code offset 0x3c+2, OEM-ID "BSD4.4 ", root entries 512, sectors 4095 (volumes <=32 MB) , sectors/FAT 12, sectors/track 63, heads 255, serial number 0x5de21501, label: "MSDOSBOOT ", FAT (12 bit), followed by FAT For comparison the filesystem on the snapshot SD card image is: root@beaglebone:~ # file -s /dev/mmcsd1s1 /dev/mmcsd1s1: DOS/MBR boot sector, code offset 0x58+2, OEM-ID "mkdosfs", Media descriptor 0xf8, sectors/track 16, heads 4, sectors 144522 (volumes > 32 MB) , FAT (32 bit), sectors/FAT 1112, serial number 0x51470be5, label: "BEAGLEBONE "
See also commit d98a4eb807e972ac207264043ba3c50ba94f5df5 Author: Jose Luis Duran <jlduran@gmail.com> Date: Fri Jun 18 11:55:24 2021 -0300 mkimg: Add fat32lba partition type Syntactic sugar for a `gpart add -t '!12' ...` equivalent. Reviewed by: emaste Pull Request: https://github.com/freebsd/freebsd-src/pull/484 usr.bin/mkimg/ebr.c | 1 + usr.bin/mkimg/mbr.c | 1 + usr.bin/mkimg/scheme.c | 1 + usr.bin/mkimg/scheme.h | 1 + 4 files changed, 4 insertions(+)
Is there something I can help with? I believe BBB images are still built using [1]: gpart add -t '!12' -a 512k -s ${FAT_SIZE} ${mddev} Where FAT_SIZE is 16. I do not have a BBB board, I only have a couple of RPis (3 and 4). I used to build its SD cards using a modified in-tree NanoBSD/embedded script, which consumed the change referenced in comment #1 [2] (private archived repo, can grant access upon request), essentially: if [ -n "$NANO_SLICE_FAT" ]; then eval $NANO_SLICE_FAT=fat32lba fi Instead of fat16b. This work was unfinished, and not upstreamed, sorry... I shifted towards creating those images using poudriere [3]. However, I have never created an ARM image using release.sh. I believe adding something like [3] could probably work in choosing the right type/size. I'm not sure if it is of much help. [1]: https://cgit.freebsd.org/src/tree/release/tools/arm.subr?id=5e54bb1ea9e904075225dc96641c2ede3fc3273c#n79 [2]: https://github.com/jlduran/NanoBSD-Pi/blob/0ec1758009c31b04b35f49efd82979945ccfe309/common#L300-L302 (private repo) [3]: https://github.com/jlduran/rpi/blob/aaf547dd03e4c6de020757da281d2d39b6add07d/pre-script-ufs.sh#L14-L63
Oh I think it's just the label in gpart show that needed a human name? If yes, then, this can be closed (MWE?): # mdconfig -a -t swap -s 5m -u 1 # newfs -U md1 /dev/md1: 5.0MB (10240 sectors) block size 32768, fragment size 4096 using 4 cylinder groups of 1.28MB, 41 blks, 256 inodes. with soft updates super-block backups (for fsck_ffs -b #) at: 192, 2816, 5440, 8064 # gpart create -s mbr /dev/md1 md1 created # gpart add -t fat32lba md1 md1s1 added # gpart show md1 => 1 10239 md1 MBR (5.0M) 1 10239 1 fat32lba (5.0M)
Hmm, you're right https://cgit.freebsd.org/src/commit/?id=b525a10ac02d7918fa581753bec5d5e54d8c8998 commit b525a10ac02d7918fa581753bec5d5e54d8c8998 Author: Ed Maste <emaste@FreeBSD.org> Date: Fri May 4 00:34:27 2018 +0000 gpart: add fat32lba MBR partition type FAT32 partition with LBA addressing. Reviewed by: marcel MFC after: 3 days Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D15266 Notes: svn path=/head/; revision=333233