Re: Overriding sector size on disks?
On Fri, 1 Nov 2013, Adrian Chadd wrote: Hi! I have an odd problem. That, honestly, can't be that odd. 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. ISTR some Hitachi external USB disk enclosures do that. Since they are not a general-purpose enclosure but came wrapped around specific Hitachi disks, it's not really their fault. Because of this, partitions just plainly don't work. 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? 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. Is it out of the question to discard the enclosure as too bugged to use? Otherwise, there is a small chance that the vendor has a firmware update that isn't stupid. Or maybe even a jumper in the enclosure. Reference: http://forum.hddguru.com/viewtopic.php?t=21099start= has some information which might help. ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Overriding sector size on disks?
On Nov 1, 2013, at 9:45 PM, Adrian Chadd adr...@freebsd.org wrote: Hi! I have an odd problem. That, honestly, can't be that odd. 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. Because of this, partitions just plainly don't work. 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? 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. Thanks! My coworker ran into this once. We couldn’t find a workaround. We just noted that we either had to use the disk with the adapter or without — you cannot swap between and expect to read your data. ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Overriding sector size on disks?
Hi! I have an odd problem. That, honestly, can't be that odd. 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. Because of this, partitions just plainly don't work. 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? 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. Thanks! -adrian ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Overriding sector size on disks?
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 2013-11-01 22:45, Adrian Chadd wrote: Hi! I have an odd problem. That, honestly, can't be that odd. 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. Because of this, partitions just plainly don't work. 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? 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. Thanks! -adrian ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org I use gnop -S 4096 to force 4k sectors when creating ZFS pools I imagine you might be able to do gnop -S 512 to go the other way, although I am not sure how to handle that for constant use. - -- Allan Jude -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.16 (MingW32) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJSdG2VAAoJEJrBFpNRJZKfGn0QAKcMLkJnLO9p+F8X0a443EaW jWTZAMgkP8Uo/VwLCCqHBBtZxk5pyviEdqcTJvzVYv2x6FE/WE8HlyIXjbyzZNoa zCU50plfSsxnk/G02TAuFRNmKPWvSw0oZVwvHC6+jwo0G9WIoVwupwNYdWLnfGCw MuwysQi7MqlSqnDmx2naEPbbiNyPW0pWDnjHHy5bf01Jqao9uPtdGgG48/fGhYxb +ViWGCVS+A5isMqDjVuW1QUetazu/1Kd1uycdWDGqTXfuzQ9/XBpubw7itYV9fn2 HL8ksQoEIye4516jEP/VLCGyElI9BJxW6QOxPGibpxZkyHV0DiMlR1yfLdV5rChb 1jTXwGYqfOtORKVCWOOUhoXeOvdZFnOLt8Lb7ckhoyNh2lh0v/pbuVAXC3KE0vSt BwpgHYqATdlZrF2G5RmIWykxUgEVt4KJ2Fn0/Q6ZMB9nTMhnEGafhMOYd2xgi474 Z82y79c95wb07dchrWCNeBQydw/paNqR4BjN6toS7OvFRipf4IcjuaFeLGWAY0GW jN6gTZXRLzpnYxgSqKVaNcaPces8tdestfzrfKn3E4+iuurrs/aerdsv6YsagV36 Poi2dPv4bWd7s26uK2YvBVTtGADydDHHSDd1J2BGJPooY2i2blfWsZ8gNDIzp1KV WXPfz6tWcHifrUl/SGfZ =lHXF -END PGP SIGNATURE- ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
Re: Overriding sector size on disks?
What does camcontrol identity say? - Original Message - From: Adrian Chadd adr...@freebsd.org To: freebsd-current freebsd-current@freebsd.org Sent: Saturday, November 02, 2013 2:45 AM Subject: Overriding sector size on disks? Hi! I have an odd problem. That, honestly, can't be that odd. 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. Because of this, partitions just plainly don't work. 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? 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. Thanks! -adrian ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org This e.mail is private and confidential between Multiplay (UK) Ltd. and the person or entity to whom it is addressed. In the event of misdirection, the recipient is prohibited from using, copying, printing or otherwise disseminating it or any information contained in it. In the event of misdirection, illegible or incomplete transmission please telephone +44 845 868 1337 or return the E.mail to postmas...@multiplay.co.uk. ___ freebsd-current@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-current To unsubscribe, send any mail to freebsd-current-unsubscr...@freebsd.org
