Hello Bryan, clue bat applied, thanks!
[email protected] (Brynet), 2012.12.06 (Thu) 16:24 (CET): > On Thu, Dec 06, 2012 at 02:02:09PM +0100, MERIGHI Marcus wrote: > > umass0 at uhub7 port 1 configuration 1 interface 0 "Sony USB Floppy > > Drive" rev 1.10/6.01 addr 3 > > umass0: using UFI over CBI with CCI > > scsibus0 at umass0: 2 targets, initiator 0 > > sd0 at scsibus0 targ 1 lun 0: <SONY, USB-FDU, 6.01> ATAPI 0/direct > > removable > > USB floppy drives are pretty much the only option for newer systems, > although ATAPI LS-120 drives are still out there. > > What's the problem? My problem is identified by the string 'I failed'. I am just puzzled that newfs-ing a floppy differs from newfs-ing anything else. Bear with me! Newfs-ing the ``c'' slice is something I haven't had to do before. I naturally thought I had to create the slice in advance. I had a second look at newfs_msdos(8) and found a hint in section EXAPMLES that uses fd0c. It's not too verbose but it's there. > > After being puzzled I just tried an existing floppy, disklabel shows a > > /dev/sd0i slice, mounting worked. > > It's DOS formatted disk, 'i' is part of the pseudo-disklabel. > > > But trying to make use of an unformatted floppy I failed: > > > > Did the usual ``fdisk -i sd0'', ``disklabel -E sd0'', created ``i'' > > slice. After ``newfs_msdos /dev/rsd0i'' (which returned darn fast but > > without obvious error output) the ``i'' slice vanished from disklabel. > > Unsurprisingly mounting a non existing /dev/sd0i slice failed. > > You're attempting to put an MBR and disklabel on a floppy, don't do > that if you're going to newfs_msdos. > > newfs_msdos -F 12 /dev/rsd0c This does the trick! Thanks! Verbose steps below: $ dd if=/dev/zero of=/dev/sd1c $ fdisk sd1 Disk: sd1 geometry: 1/1/2880 [2880 Sectors] Offset: 0 Signature: 0x0 Starting Ending LBA Info: #: id C H S - C H S [ start: size ] ---------------------------------------------------------------- 0: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 1: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 3: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused $ disklabel sd1 # /dev/rsd1c: type: SCSI disk: SCSI disk label: USB-FDU duid: 0000000000000000 flags: bytes/sector: 512 sectors/track: 2880 tracks/cylinder: 1 sectors/cylinder: 2880 cylinders: 1 total sectors: 2880 boundstart: 0 boundend: 2880 drivedata: 0 16 partitions: # size offset fstype [fsize bsize cpg] c: 2880 0 unused $ newfs_msdos -F 12 /dev/rsd1c /dev/rsd1c: 2840 sectors in 355 FAT12 clusters (4096 bytes/cluster) bps=512 spc=8 res=1 nft=2 rde=512 sec=2880 mid=0xf0 spf=2 spt=63 hds=45 hid=0 $ fdisk sd1 Disk: sd1 geometry: 1/1/2880 [2880 Sectors] Offset: 0 Signature: 0xAA55 Starting Ending LBA Info: #: id C H S - C H S [ start: size ] --------------------------------------------------------------- 0: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 1: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 2: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused 3: 00 0 0 0 - 0 0 0 [ 0: 0 ] unused $ disklabel sd1 # /dev/rsd1c: type: SCSI disk: SCSI disk label: USB-FDU duid: 0000000000000000 flags: bytes/sector: 512 sectors/track: 2880 tracks/cylinder: 1 sectors/cylinder: 2880 cylinders: 1 total sectors: 2880 boundstart: 0 boundend: 2880 drivedata: 0 16 partitions: # size offset fstype [fsize bsize cpg] c: 2880 0 unused i: 2880 0 MSDOS $ mount /dev/sd1i /mnt/ $ touch /mnt/fifi $ ls -la /mnt/ total 36 drwxr-xr-x 1 root wheel 16384 Jan 1 1980 . drwxr-xr-x 14 root wheel 1024 Nov 30 13:36 .. -rwxr-xr-x 1 root wheel 0 Dec 11 11:31 fifi Bye, Marcus > > > fdformat(1) just says ``this is not a floppy''. > > fdformat(1) uses ioctl(4)'s specific to fdc(4), that will not work for > floppy controllers behind USB. > > You can always just.. > > dd if=/dev/zero of=/dev/rfd0c bs=64k > > > What options do I have? What am I getting wrong? Clue bat welcome! > !DSPAM:50c0b8fe98881608215037!
