Date: Mon, 8 Mar 2021 15:58:09 -0800 From: David Christensen <dpchrist@holgerdanske.com> To: freebsd-questions@freebsd.org Subject: Re: Mounting exFat device Message-ID: <c28cd746-aab1-0d39-68f6-26c6b306be71@holgerdanske.com> In-Reply-To: <0d91f3b4-909a-78f2-421b-98dba374d363@twc.com> References: <d410911b-df2e-8f28-a557-9dcb89a67785@twc.com> <9b71b708-20de-67f6-50db-a828ef380ee3@holgerdanske.com> <851fbc46-a752-a6fb-83f2-f6363c6381fa@twc.com> <20aacf4c-2ca0-b40b-62fb-9aaf164df415@holgerdanske.com> <0d91f3b4-909a-78f2-421b-98dba374d363@twc.com>
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On 3/8/21 8:27 AM, Steven Friedrich wrote:
Here is one of my FreeBSD systems:
2021-03-08 14:53:03 toor@f2 ~
# freebsd-version
12.2-RELEASE-p4
2021-03-08 14:53:08 toor@f2 ~
# uname -a
FreeBSD f2.tracy.holgerdanske.com 12.2-RELEASE-p4 FreeBSD
12.2-RELEASE-p4 GENERIC amd64
Here is a SanDisk Cruzer Glide with the original factory format (FAT32
or whatever; there are too many variants):
2021-03-08 14:53:09 toor@f2 ~
# camcontrol devlist | grep -i sandisk
<SanDisk Cruzer Glide 1.00> at scbus7 target 0 lun 0 (pass2,da0)
2021-03-08 14:53:26 toor@f2 ~
# gpart show da0
=> 1 122585087 da0 MBR (58G)
1 31 - free - (16K)
32 122585056 1 fat32lba (58G)
2021-03-08 14:53:41 toor@f2 ~
# gpart list da0
Geom name: da0
modified: false
state: OK
fwheads: 255
fwsectors: 63
last: 122585087
first: 1
entries: 4
scheme: MBR
Providers:
1. Name: da0s1
Mediasize: 62763548672 (58G)
Sectorsize: 512
Stripesize: 0
Stripeoffset: 16384
Mode: r0w0e0
efimedia: HD(1,MBR,00000000,0x20,0x74e7fe0)
rawtype: 12
length: 62763548672
offset: 16384
type: fat32lba
index: 1
end: 122585087
start: 32
Consumers:
1. Name: da0
Mediasize: 62763565056 (58G)
Sectorsize: 512
Mode: r0w0e0
2021-03-08 14:55:32 toor@f2 ~
# mkdir /mnt/da0s1
2021-03-08 14:56:56 toor@f2 ~
# mount /dev/da0s1 /mnt/da0s1
mount: /dev/da0s1: No such file or directory
2021-03-08 14:57:04 toor@f2 ~
# l /dev/da*
/dev/da0 /dev/da0s1
I believe the error message is misleading -- device node /dev/da0s1
exists, but mount(8) is failing because it cannot determine the type of
the filesystem on da0s1 (?).
STFW the solution is to provide the correct 't type' option to mount(8):
2021-03-08 15:05:15 toor@f2 ~
# mount -v -t msdosfs /dev/da0s1 /mnt/da0s1
/dev/da0s1 on /mnt/da0s1 (msdosfs, local, writes: sync 1 async 0, reads:
sync 1872 async 0, fsid a400000032000000)
2021-03-08 15:13:22 toor@f2 ~
# mount | grep da0
/dev/da0s1 on /mnt/da0s1 (msdosfs, local)
2021-03-08 15:13:37 toor@f2 ~
# l /mnt/da0s1
./ SanDiskSecureAccess/
../ SanDiskSecureAccessV3.1_win.exe*
README.TXT* firmware/
2021-03-08 15:19:49 toor@f2 ~
# umount /mnt/da0s1
David
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