USB stick not accessible

joachim

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May 22, 2013
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After recording from a SAT receiver until the stick was full the stick is no longer working. With Linux no device is showing. Under Windows the drive letter is showing but no access (no chkdsk, format etc). Even a low level format prog is not working (no access). What can I do to get the stick working again (32GB)?

Thanks for help
 

mcobit

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Jul 28, 2008
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SAT receivers and tvs tend to reformat a usb device as they record in a drm format with a linux filesystem like zfs.


Can you read the stick with the receiver?
 
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joachim

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May 22, 2013
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404
Wow, that was a quick response. Here some more info. The stick is from a friend, I don't know the brand of the Sat receiver. lsblk and df are not showing the stick which is Intenso 32 GB. A second with FAT is working without problems. Maybe its the zfs file system. My friend says the receiver no longer can access the stick. dmesg is showing the stick :

[ 1494.980957] usb usb2: SerialNumber: ehci-omap.0
[ 1494.987640] hub 2-0:1.0: USB hub found
[ 1494.987670] hub 2-0:1.0: 3 ports detected
[ 1522.082336] usb 2-2: new high-speed USB device number 2 using ehci-omap
[ 1522.240753] usb 2-2: New USB device found, idVendor=058f, idProduct=1234
[ 1522.240753] usb 2-2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
[ 1522.240753] usb 2-2: Product: Mass Storage Device
[ 1522.240783] usb 2-2: Manufacturer: Alcor Micro
[ 1522.283386] Initializing USB Mass Storage driver...
[ 1522.290191] scsi0 : usb-storage 2-2:1.0
[ 1522.290649] usbcore: registered new interface driver usb-storage
[ 1522.290679] USB Mass Storage support registered.
[ 1523.287536] scsi 0:0:0:0: Direct-Access     Generic  USB Flash Disk   7.76 PQ: 0 ANSI: 4
[ 1523.296966] sd 0:0:0:0: [sda] Attached SCSI removable disk
[ 1523.344238] sd 0:0:0:0: Attached scsi generic sg0 type 0
 

So how can I access the data or reformat it to FAT ?

Thank you.
 

mcobit

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Try gparted. It will show you info about the filesystem and lets you reformat it. There is a pnd on the repo.


If that doesn't work, you can try diskpart in windows. But be careful with that.


But its strange that the receiver isnt able to read it anymore.


What is the output of sudo lsusb ?
 
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hdonk

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Sep 12, 2008
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I've found testdisk to be great at restoring the FAT partition on the microSD card from my phone when it gets chewed up.
 

joachim

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May 22, 2013
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404
lsusb is showing the stick

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 003: ID 058f:1234 Alcor Micro Corp. Flash Drive
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

 I got the type : Auvisio PX 1143 - so far I have not found anything in Internet. diskpart doesn't show the stick.
 

mcobit

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What about gparted?


There should also be a gparted live cd if you want to use a PC.
 
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joachim

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May 22, 2013
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404
after playing around a bit with dd and ls here is more info

dd if=/dev/zero of=/dev/sda

gives error


konnte /dev/sda nicht öffnen, kein medium gefunden (cannot open, no media)

with /dev/sdb:   writing 227 MB  + message no more memory

 df shows no /dev/sdb

ls-l /dev/sda
brw-rw---- 1 root plugdev 8, 0 Feb 17 17:50 /dev/sda

and ls-l /dev/sdb (after copy of a file with dd

-rw-r--r-- 1 root root 112901770 Feb 17 18:26 /dev/sdb
 

so it seems I got 2 disks (partitions ?) on the stick

but still no access in gparted
 

rohezal

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Oct 18, 2009
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1,673
sdb and sda are 2 different disks / devices. sda1 and sda2 are 2 partitions on the same device. I am sorry, but it looks like your stick is broken.
 
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