No, it has to do with disklabel placement.
It will work if the ext2fs filesystem is listed as a MBR partition,
but not if it is only listed as a disklabel entry.
But after that, you potentially have other issues... we do not make
promises about filesystem compatibility between architectures.
Wolfgang Pfeiffer <r...@gmx.net> wrote:
>
>
> Short version:
> Looks like something's wrong either with your hardware or
> software: I have the same computer, with OBSD 6.5 installed, and no
> problems mounting thumbs - maybe try another thumb, or recreate the
> ext2 partition, or use a stable OBSD, instead of current ...
>
> Here on macppc:
> hw.product=PowerBook5,8
>
> with a regular 6.5 it seems:
> ---------
> kern.version=OpenBSD 6.5 (GENERIC) #496: Sat Apr 13 11:54:02 MDT 2019
> dera...@macppc.openbsd.org:/usr/src/sys/arch/macppc/compile/GENERIC
> --------
>
> and I can easily move sticks/data on it around between a Fedora amd64
> machine and the macppc Powerbook
>
> For the sake of a demo here:
>
> + + + + On Linux + + +
>
> Zero-ing a whole usb thumb on Fedora Linux
> ("dcfldd if=/dev/zero of=/dev ... etc.)
>
> Via "gnome-disks" formatted the thumb ("compatible with all systems
> and devices (MBR / DOS"), created a partition choosing "No
> filesystem", because ext2 wasn't offered as an option, IIRC ...
> then from the command line someth. like:
> mkfs.ext2 /dev/sdf1
>
> + + + + On OBSD macppc + + +
>
> then plugged the drive into the Powerbook:
>
> after
> doas disklabel sd0 I get this:
>
> # /dev/rsd0c:
> type: SCSI
> disk: SCSI disk
> label: Transcend 32GB
> duid: 0000000000000000
> flags:
> bytes/sector: 512
> sectors/track: 63
> tracks/cylinder: 255
> sectors/cylinder: 16065
> cylinders: 3805
> total sectors: 61132800
> boundstart: 0
> boundend: 61132800
> drivedata: 0
>
> 16 partitions:
> # size offset fstype [fsize bsize cpg]
> c: 61132800 0 unused
> i: 61130752 2048 ext2fs
>
> -----------
>
> then someth. like:
> mount_ext2fs /dev/sd0i /mnt/ntfs
>
> Then on macppc copied parts of this email text over to the thumb on
> /mnt/ntfs, unmounted it and took the thumb back to
>
> ++++ Fedora Linux ++++
>
> and mounted the thumb on the Linux machine, copying parts of it into
> this email, that I write and send from this Fedora system ....
>
> Because of the very first paragraphs on this page:
> https://www.openbsd.org/faq/current.html
> try stable 6.5, maybe?
>
> Wolfgang
>
>
> On Wed, Dec 18, 2019 at 10:40:36PM +0000, rgci...@disroot.org wrote:
> >dear all,
> >
> >to transfer files between an amd64 Linux, amd64 OpenBSD-current, and macppc
> >OpenBSD-current i have a USB drive. last night was the first time i tried to
> >use the drive on the macpcc.
> >
> >Dec 19 06:09:06 apbg4 /bsd: umass0 at uhub0 port 2 configuration 1 interface
> >0 "BUFFALO SSD-PEU3" rev 2.10/1.10 addr 2
> >Dec 19 06:09:06 apbg4 /bsd: umass0: using SCSI over Bulk-Only
> >Dec 19 06:09:06 apbg4 /bsd: scsibus4 at umass0: 2 targets, initiator 0
> >Dec 19 06:09:06 apbg4 /bsd: sd0 at scsibus4 targ 1 lun 0: <BUFFALO,
> >SSD-PEU3, PMAP> serial.04110210357B1BD7B099
> >Dec 19 06:09:06 apbg4 /bsd: sd0: 241216MB, 512 bytes/sector, 494010368
> >sectors
> >
> >the disklabel was not detected properly. this is the disklabel on macppc
> >OpenBSD-current (#638: Mon Dec 16):
> >
> ># /dev/rsd0c:
> >type: SCSI
> >disk: SCSI disk
> >label: SSD-PEU3
> >duid: 0000000000000000
> >flags:
> >bytes/sector: 512
> >sectors/track: 63
> >tracks/cylinder: 255
> >sectors/cylinder: 16065
> >cylinders: 30750
> >total sectors: 494010368
> >boundstart: 0
> >boundend: 494010368
> >drivedata: 0
> >
> >16 partitions:
> ># size offset fstype [fsize bsize cpg]
> > c: 494010368 0 unused
> >
> >i tried both USB ports of the Powerbook5,8. same results.
> >
> >this is the **correct** disklabel on amd64 OpenBSD-current (#637: Sun Dec
> >15):
> >
> ># /dev/rsd1c:
> >type: SCSI
> >disk: SCSI disk
> >label: SSD-PEU3
> >duid: 0000000000000000
> >flags:
> >bytes/sector: 512
> >sectors/track: 63
> >tracks/cylinder: 255
> >sectors/cylinder: 16065
> >cylinders: 30750
> >total sectors: 494010368
> >boundstart: 0
> >boundend: 494010368
> >drivedata: 0
> >
> >16 partitions:
> ># size offset fstype [fsize bsize cpg]
> > c: 494010368 0 unused
> > i: 494006272 2048 ext2fs
> >
> >
> >partition can be mounted properly on amd64 Linux and OpenBSD.
> >
> >
> >IIRC the drive was initialized / created on Linux.
> >
> >
> >i have other USB drives (whole disk, msdos format) that work properly across
> >all
> >3 machines.
> >
> >
> >what am i missing here? looking forward to some pointers.
> >
> >
> >yorosiku ~
>
> --
> "Altars are burnin' with flames far and wide
> The foe has crossed over from the other side
> They tip their caps from the top of the hill
> You can feel them come, more brave blood to spill"
>
> Bob Dylan: "'Cross The Green Mountain"
>
