USB Stick Problem!

Lumpi · n00b Joined: 03 Nov 2006 Posts: 4

Hi there,
I've got a 512 MB USB Stick from Kingston. When I plug it in my USB-Port I get the following messages:

usb 1-1: new high speed USB device using ehci_hcd and address 77
usb 1-1: configuration #1 chosen from 1 choice
scsi4 : SCSI emulation for USB Mass Storage devices
usb-storage: device found at 77
usb-storage: waiting for device to settle before scanning
Vendor: Model: USB Flash Memory Rev: 6.00
Type: Direct-Access ANSI SCSI revision: 02
SCSI device sdb: 1001472 512-byte hdwr sectors (513 MB)
sdb: Write Protect is off
sdb: Mode Sense: 0b 00 00 08
sdb: assuming drive cache: write through
SCSI device sdb: 1001472 512-byte hdwr sectors (513 MB)
sdb: Write Protect is off
sdb: Mode Sense: 0b 00 00 08
sdb: assuming drive cache: write through
sdb: sdb1
sd 4:0:0:0: Attached scsi removable disk sdb
sd 4:0:0:0: Attached scsi generic sg1 type 0
usb-storage: device scan complete

Everything seems fine. The Stick is mounted and I can write to it.
But here's the problem:

If I unplug the stick after writing some data to it and plug it in again sometimes there is no data on it.
It's the same when I try to delete some data from the stick. Everything looks ok but after plugging in the stick again all deleted
files are still there. I've tried another stick but it makes no difference.

I've loaded all necessary modules. The stick is formated with fat16. I've already tried fat32 but nothing changes.
My kernelversion: 2.6.17-gentoo-r8

Maybe someone can help me!

Dlareh · Advocate Joined: 06 Aug 2005 Posts: 2102

Do you unmount the stick before unplugging it?
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"Mr Thomas Edison has been up on the two previous nights discovering 'a bug' in his phonograph." --Pall Mall Gazette (1889)
Are we THERE yet?

Lumpi · n00b Joined: 03 Nov 2006 Posts: 4

No I don't. A few month ago It worked without unmounting the stick.
Now I've tried it with unmounting. Seems to work.

Thank you

JeliJami · Veteran Joined: 17 Jan 2006 Posts: 1086 Location: Belgium

you can run the command

orionas · n00b Joined: 19 Sep 2006 Posts: 13 Location: Greece

Hi,
sync probably prevents data loss, but what about filesystem corruption?
I'm not sure about this

IMHO, the only way to be sure is to unmount the filesystem.
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It's only when you look at an ant through a magnifying glass on a sunny day that you realise how often they burst into flames.