Interesting. The usb block device is actually reporting a sector size of 4KB. If you want to experiment a little, try changing the BBSIZE macro in the ntfs module from 1024 to 4096 and recompiling it. The BBSIZE macro is in /usr/src/sys/vfs/ntfs/ntfs.h (in DragonFlyBSD). If you are unsure how to just recompile one module, then just recompile the whole kernel.
I think the other block operations in ntfs are based on a block size defined in the filesystem volume header so there's a chance that this might solve the issue. -Matt On Tue, May 2, 2017 at 7:36 AM, Rod Person <[email protected]> wrote: > Hi, > > I'm attempting to mount and external usb ntfs hard drive: > <Seagate Backup+ Desk 0406> Fixed Direct Access SCSI-6 device > > In FreeBSD I mount it using the fuse driver, but being it isn't > available in DragonFly, I'm just attempting with mount_ntfs. I get > Invalid argument not matter how I try and mount it. I noticed the error: > > dscheck(da8): b_bcount 1024 is not on a sector boundary (ssize 4096) > > showing up in the dmesg and once when attempting to mount in the > console before starting X. That error doesn't show if I try and mount > in xterm, only writes to dmesg. I assume the the sector boundary is why > I can't mount it, but is there any way around this? > > > atomizer-dfly# mount_ntfs /dev/da8 /mnt/usb > mount_ntfs: /dev/da8: Invalid argument > > also tried /dev/da8s1 same result > > atomizer-dfly# dmesg | grep dscheck > dscheck(da8): b_bcount 1024 is not on a sector boundary (ssize 4096) > dscheck(da8s1): b_bcount 1024 is not on a sector boundary (ssize 4096) > > > atomizer-dfly# fdisk da8s1 > ******* Working on device /dev/da8s1 ******* > parameters extracted from device are: > cylinders=45600 heads=255 sectors/track=63 (16065 blks/cyl) > > Figures below won't work with BIOS for partitions not in cyl 1 > parameters to be used for BIOS calculations are: > cylinders=45600 heads=255 sectors/track=63 (16065 blks/cyl) > > Media sector size is 4096 > Warning: BIOS sector numbering starts with sector 1 > Information from DOS bootblock is: > The data for partition 1 is: > sysid 79,(QNX 4.2 Tertiary) > start 1936269394, size 1836016416 (7171939 Meg), flag d > beg: cyl 335/ head 10/ sector 2; > end: cyl 327/ head 84/ sector 13 > The data for partition 2 is: > sysid 115,(unknown) > start 1917848077, size 544437093 (2126707 Meg), flag 70 > beg: cyl 371/ head 114/ sector 37; > end: cyl 256/ head 101/ sector 36 > The data for partition 3 is: > sysid 43,(unknown) > start 1818575915, size 544175136 (2125684 Meg), flag 43 > beg: cyl 364/ head 116/ sector 50; > end: cyl 372/ head 65/ sector 44 > The data for partition 4 is: > sysid 97,(Speed) > start 2844524554, size 54974 (214 Meg), flag 72 > beg: cyl 372/ head 101/ sector 51; > end: cyl 269/ head 114/ sector 52 > -- > Rod > > http://www.rodperson.com > > He who knows himself to be one way and pretends it is another way is a > thief who robs his own soul. > > The Mahabharata > Sakuntala 25 >
