Date: Sat, 2 Nov 2013 11:12:06 -0500 From: Mark Felder <feld@FreeBSD.org> To: Adrian Chadd <adrian@freebsd.org> Cc: freebsd-current <freebsd-current@freebsd.org> Subject: Re: Overriding sector size on disks? Message-ID: <AFA9B599-0F0F-49B0-A29B-C020622EA0B5@FreeBSD.org> In-Reply-To: <CAJ-VmonDc3QuKKqE6b=FmOy%2Btz6J8AYpXtHon5EWR_3dTiePww@mail.gmail.com> References: <CAJ-VmonDc3QuKKqE6b=FmOy%2Btz6J8AYpXtHon5EWR_3dTiePww@mail.gmail.com>
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On Nov 1, 2013, at 9:45 PM, Adrian Chadd <adrian@freebsd.org> wrote: > Hi! >=20 > I have an odd problem. That, honestly, can't be that odd. >=20 > I have a bunch of SATA disks that when plugged into the laptop > directly, show up as 512 byte sectors. But if I plug it in via this > iomega USB caddy, they show up as 4k sector devices. >=20 > Because of this, partitions just plainly don't work. >=20 > Has anyone faced this? Is there some trick to do to get these things > to go back to being 512 byte sector devices so one can use them? >=20 > Similarly, because they show up as 512 byte sector devices on > macosx/linux, they can read/write NTFS/MSDOS partitions on the thing. > But if I plug it into freebsd, it shows up as a 4k sector device and > things plainly don't work. >=20 > Thanks! >=20 >=20 My coworker ran into this once. We couldn=92t find a workaround. We just = noted that we either had to use the disk with the adapter or without =97 = you cannot swap between and expect to read your data.=
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