Ged Haywood wrote:
|> USB 2.0 flash disk called "EasyDisk" (capacity: 256MB). The
|> manufacturer is "Luwen" and the device seems to contain electronics
|> by Prolific (manufacturer Id 0x67b), namely the 2515 "Hi-Speed USB
|> Flash Disk Controller" which also contains a hub and a security
|> device, and something called 2517. My Linux box is equipped with an
|> ASUS P2B motherboard (so only USB 1.1 here) and runs SuSE 8.1
|> (kernel version 2.4.19 recompiled for verbose error reporting; I
|> have also compiled a 2.4.22 as provided by kernel.org, basically
|> this kernel shows the same behaviour).
| Two suggestions:
| 1. try kernel 2.6.0-test5 or later - I have no idea if it will work;
| 2. let me know where I can get one (or send me your one:) and I'll try it
I am experiencing similar problems, with 256 MB EasyDisk 2.0 (as a
friend has another one, it's not just a defective sample here and there).
It works under Win XP, both on USB 2.0 (Compaq EVO N800w laptop), and
USB 1.1 (PC Chips M800LR board, SiS chipset).
On both machines (and a few more :-) it does not work under linux,
while several USB 1.1 flash disks work fine.
I have tried 2.4.20, 21 kernels, as well as 2.6.0-test3 and test5.
Apparently, the problem is on the flash disk, of which the driver does
not take care of. In
linux-2.6.0-test5/drivers/usb/storage/unusual_devs.h one can read:
/* Reported by Dan Pilone <[EMAIL PROTECTED]>
* The device needs the flags only.
* Also reported by Brian Hall <[EMAIL PROTECTED]>, again for flags.
* I also suspect this device may have a broken serial number.
*/
UNUSUAL_DEV( 0x1065, 0x2136, 0x0000, 0x9999,
"CCYU TECHNOLOGY",
"EasyDisk Portable Device",
US_SC_DEVICE, US_PR_DEVICE, NULL,
US_FL_MODE_XLATE ),
However, the same code is in newer2.4.X kernels, and it does not help.
We already had problems with another 2.0 flash disk (2 copies), which I
made unusable by attempts to repartition and format. Then we got
EasyDisk ones, which were supposedly certified for linux.
| What's the "security device" supposed to do?
I think that the SW supplied with it (for MS Win) allows you to set two
partitions, one encrypted, and one not (I have chosen all space in one
unencrypted partition). The problem may be with partitions (there are
four: sda[1-4], and I have tried to mount each of them; mount gives
error: /dev/sda1: can't read superblock ).
I enclose dmesg lines of interest (2.6.0-test5 kernel) below, as well
as a few that look differently, and correspond to a working 64 MB USB
1.1 flash disk (on the same system).
Any help would be appreciated.
Nenad Antonic.
____________________________________________________
drivers/usb/core/usb.c: registered new driver usbfs
drivers/usb/core/usb.c: registered new driver hub
ohci-hcd: 2003 Feb 24 USB 1.1 'Open' Host Controller (OHCI) Driver (PCI)
ohci-hcd: block sizes: ed 64 td 64
ohci-hcd 0000:02:00.0: OHCI Host Controller
ohci-hcd 0000:02:00.0: irq 19, pci mem f880a000
ohci-hcd 0000:02:00.0: new USB bus registered, assigned bus number 1
hub 1-0:0: USB hub found
hub 1-0:0: 4 ports detected
SCSI subsystem initialized
Initializing USB Mass Storage driver...
drivers/usb/core/usb.c: registered new driver usb-storage
USB Mass Storage support registered.
hub 1-0:0: debounce: port 2: delay 100ms stable 4 status 0x101
hub 1-0:0: new USB device on port 2, assigned address 2
hub 1-2:0: USB hub found
hub 1-2:0: 1 port detected
hub 1-2:0: debounce: port 1: delay 100ms stable 4 status 0x101
hub 1-2:0: new USB device on port 1, assigned address 3
scsi0 : SCSI emulation for USB Mass Storage devices
Vendor: Easy Model: Disk Rev: PROL
Type: Direct-Access ANSI SCSI revision: 02
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 3
SCSI device sda: 512000 512-byte hdwr sectors (262 MB)
sda: Write Protect is off
sda: Mode Sense: 00 06 00 00
sda: cache data unavailable
sda: assuming drive cache: write through
sda: sda1 sda2 sda3 sda4
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
FAT: unable to read boot sector
__________________________________________________
For a working flash disk:
scsi0 : SCSI emulation for USB Mass Storage devices
Vendor: 3SYSTEM Model: USB FLASH DISK Rev: 1.00
Type: Direct-Access ANSI SCSI revision: 02
WARNING: USB Mass Storage data integrity not assured
USB Mass Storage device found at 2
SCSI device sda: 128000 512-byte hdwr sectors (66 MB)
sda: Write Protect is off
sda: Mode Sense: 00 0e 00 00
sda: cache data unavailable
sda: assuming drive cache: write through
sda: sda1
Attached scsi removable disk sda at scsi0, channel 0, id 0, lun 0
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