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Old 06-09-2004, 07:33 AM   #1
LQ Newbie
Registered: Jun 2004
Location: Adelaide, Australia
Distribution: Mandrake 10
Posts: 12

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USB 2.0 Flash Drive with Mandrake 10

I'm new to this forum, and fairly new to linux, so I hope I ask my question correctly and with the right information.

Im having a small amount of trouble with a USB 2.0 flash drive with my Mandrake 10.

If I plug it in, and boot up, it is detected, it mounts and I can access the drive.
The problem is, the icon on the desktop does not give me the option to unmount the drive. Even when I 'umount /mnt/removable' and remove the drive and replug it, I cant get it working again. I have to reboot to make that happen.

I know I can hotplug things in my current system state as I can hotplug my camera and that gets detected and redetected.

I tried using Knoppix with the usb drive, and this automatically set up the drive to be unmountable. This works when I plug the usb drive back in and remount it. Under knoppix, the fstab line for the drive is:
/dev/sda1 /mnt/sda1 vfat noauto,users,exec,umask=000,uid=knoppix,gid=knoppix 0 0

So I'm thinking the problem is either the modules I have installed, or something is set up strangely..

And now for some printouts....

under sda in Harddrake2:
New devfs device: /dev/scsi/host0/bus0/target0/lun0/disc
Old device file: /dev/sda
Floppy format: DCS SOLID GEAR -USB2
Media class: hd (Mass Storage|SCSI|Bulk (Zip))

that seems correct to me.

Module Size Used by
sg 38044 0
sr_mod 17028 0
radeon 127008 36
md5 3872 1
ipv6 232352 13
snd-seq-oss 31232 0
snd-seq-midi-event 7552 1 snd-seq-oss
snd-seq 51024 4 snd-seq-oss,snd-seq-midi-event
snd-pcm-oss 51812 0
snd-mixer-oss 17952 1 snd-pcm-oss
snd-via82xx 24128 1
snd-pcm 93156 2 snd-pcm-oss,snd-via82xx
snd-timer 24484 2 snd-seq,snd-pcm
snd-ac97-codec 58148 1 snd-via82xx
gameport 4480 1 snd-via82xx
snd-page-alloc 11972 2 snd-via82xx,snd-pcm
snd-mpu401-uart 7072 1 snd-via82xx
snd-rawmidi 23616 1 snd-mpu401-uart
snd-seq-device 8008 3 snd-seq-oss,snd-seq,snd-rawmidi
snd 52484 14 snd-seq-oss,snd-seq-midi-event,snd-seq,snd-pcm-oss,snd-mixer-oss,snd-via82xx,snd-pcm,snd-timer,snd-ac97-codec,snd-mpu401-uart,snd-rawmidi,snd-seq-device
soundcore 9248 1 snd
af_packet 20520 0
hid 53312 0
ide-floppy 18752 0
ide-tape 34864 0
ide-cd 40548 0
cdrom 37184 2 sr_mod,ide-cd
floppy 59444 0
8139too 23712 0
mii 4992 1 8139too
ohci1394 33956 0
ieee1394 287856 1 ohci1394
nls_cp850 4736 1
vfat 13760 1
fat 45120 1 vfat
usb-storage 72932 0
nls_iso8859-1 3904 2
ntfs 85932 1
supermount 37876 2
via-agp 7360 1
agpgart 31016 2 via-agp
ehci-hcd 24196 0
uhci-hcd 29104 0
usbcore 99132 6 hid,usb-storage,ehci-hcd,uhci-hcd
rtc 11576 0
ext3 110408 2
jbd 54328 1 ext3
sd_mod 16608 0
sata_via 4580 0
libata 38912 1 sata_via,[permanent]
scsi_mod 114008 5 sg,sr_mod,usb-storage,sd_mod,libata

and my fstab file:
/dev/hde6 / ext3 defaults 1 1
none /dev/pts devpts mode=0620 0 0
/dev/hde8 /home ext3 defaults 1 2
/dev/hdg /mnt/cdrom auto umask=0,user,iocharset=iso8859-1,codepage=850,noauto,ro,exec 0 0
none /mnt/floppy supermount dev=/dev/fd0,fs=ext2:vfat,--,umask=0,iocharset=iso8859-1,sync,codepage=850 0 0
/dev/hde1 /mnt/win_c ntfs umask=0,nls=iso8859-1,ro 0 0
/dev/hde5 /mnt/win_d vfat umask=0,iocharset=iso8859-1,codepage=850 0 0
none /proc proc defaults 0 0
/dev/hde7 swap swap defaults 0 0

none /mnt/removable supermount dev=/dev/scsi/host0/bus0/target0/lun0/part1,fs=ext2:vfat,--,umask=0,iocharset=iso8859-1,kudzu,codepage=850 0 0

Id really appreciate some help on this issue.
I've looked around the forums for solutions, but I couldn't find much in the way of re-plugging a usb device, mostly just mounting it.

Old 06-09-2004, 08:02 AM   #2
Registered: Aug 2002
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none /mnt/removable supermount dev=/dev/scsi/host0/bus0/target0/lun0/part1,fs=ext2:vfat,--,umask=0,iocharset=iso8859-1,kudzu,codepage=850 0 0
This looks like your flash drive. MDK has autmatically configured it for supermount which could be causing all the problems.

Try changing the fstab to
/dev/sda1 /mnt/removable ext2,vfat noauto,umask=0,iocharset=iso8859-1,codepage=850 0 0

Then create a link
ln -s dev/scsi/host0/bus0/target0/lun0/part1 /dev/sda1

/dev/sda1 might already exist.

Last edited by michaelk; 06-09-2004 at 08:53 AM.
Old 06-09-2004, 09:31 PM   #3
LQ Newbie
Registered: Jun 2004
Location: Adelaide, Australia
Distribution: Mandrake 10
Posts: 12

Original Poster
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Thanks for that,

I added that line to the fstab,
but when I rebooted, I found that the line(s) I removed originally:

none /mnt/removable2 supermount dev=/dev/scsi/host0/bus0/target0/lun0/part1,fs=ext2:vfat,--,umask=0,iocharset=iso8859-1,kudzu,codepage=850 0 0

was replaced. I noticed that when I booted, sometime during the startup messages, a dialog box comes up with Harddrake saying a device was added.

So again, I can get the drive to work under /mnt/removable2, but I cant umount, unplug and replug the drive...

Could I have a service running, or something else configured wrong outside of the fstab file?

Any suggestions?
Old 08-04-2004, 03:54 PM   #4
Registered: Feb 2004
Location: Washington, USA
Distribution: Debian
Posts: 265

Rep: Reputation: 32
xxx_Birdman_xxx - I am just starting to dig into getting my SanDisk compact flash reader working in Mandrake 10. Some of the things I'm observing may shed some light on what you're seeing?

If I have "hotplug" service running or started, I get multiple "removable" type directories that create/disappear on their own in /mnt. If I disable hotplug, I only get /mnt/removable created/removed as I plug/unplug my reader.

I've been successful at disabling hotplug, rebooting my system with no USB devices attached, then after full boot up and log in, I checked my /etc/fstab. It has no references to "/mnt/removable".

Then, I plug in my USB reader and recheck /etc/fstab. A line magically appears with "/dev/scsi/host3/bus0/target0/lun0/part1 /mnt/removable auto umask=0,user,iocharset=iso8859-1,kudzu,codepage=850,noauto,exec 0 0"

The reason this fstab entry "magically appears" (I'm guessing) is because devfsd is what is really controlling /dev/sda1 on MDK 10?

At any rate, once this line appears in /etc/fstab, I can then type "mount /dev/sda1 /mnt/removable" and it mounts! But I can only access the mounted files as my root userid at this time... I'm still working on understanding that part.

So, in a nutshell, I can mount/unmount this device at will without rebooting the operating system and I only have one instance of /mnt/removable.

Coincidentally, no icons pop up on my desktop for "removable" and that's fine by me (for now). I can at least get to my cards data. Hopefully these ramblings help you figure out your card too!


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