NSLU2-Linux
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FAQ.CannotFormat History

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December 01, 2008, at 07:36 AM by hwlester -- corrected name of USB stick
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2008.12.01, hwlester: Same issue with the SanDisk? Cruzer Micro 4GB I picked up from Wal-Mart on Black Friday:

to:

2008.12.01, hwlester: Same issue with the SanDisk? Cruzer Micro Skin 4GB I picked up from Wal-Mart on Black Friday:

December 01, 2008, at 07:25 AM by hwlester -- Additional comment
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2008.09.09, MarkHu?: Under Mac OSX, I was able to use the GUI Disk Util to re-partition my balky USB flash drive, thus enabling the slug to format it ext3.

to:

2008.09.09, MarkHu?: Under Mac OSX, I was able to use the GUI Disk Util to re-partition my balky USB flash drive, thus enabling the slug to format it ext3.

2008.12.01, hwlester: Same issue with the SanDisk? Cruzer Micro 4GB I picked up from Wal-Mart on Black Friday:

# dmesg | grep Vendor
  Vendor: SanDisk   Model: Cruzer Micro      Rev: 8.01

After seeing this post, I formatted it as NTFS and was able to format it using the NSLU2's GUI after that.

September 20, 2008, at 08:31 AM by MarkHu --
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  1. Reboot
to:
  1. Reboot the slug
September 20, 2008, at 08:31 AM by MarkHu -- mac experience
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I don't know though if the dmesg command outputs are enough specific to identify a stick, but at least this is the output when I type the command and may help you identifying a working stick.

to:

I don't know though if the dmesg command outputs are enough specific to identify a stick, but at least this is the output when I type the command and may help you identifying a working stick.

2008.09.09, MarkHu?: Under Mac OSX, I was able to use the GUI Disk Util to re-partition my balky USB flash drive, thus enabling the slug to format it ext3.

May 14, 2008, at 03:01 PM by Walter Vos --
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2008.05.14, Walter Vos: this worked perfectly for me! I've also managed to format it by plugging it into the other USB port (1 instead of 2).

April 19, 2008, at 04:10 PM by bluebear --
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2008.4.19, bluebear: The same with me. I have a 4GB flash disk from Intenso. I have also tried the formatfix-guide located at FailedFormatFix?, but it didn't work. In the end the problem was solved by the solution of dlumberg: Formatting with NTFS and then formatting with the web tool.

to:

2008.04.19, bluebear: The same with me. I have a 4GB flash disk from Intenso. I have also tried the formatfix-guide located at Unslung.FailedFormatFix, but it didn't work. In the end the problem was solved by the solution of dlumberg: Formatting with NTFS and then formatting with the web tool.

Changed line 35 from:

I don't know though if the dmesg command outputs are enough specific to identify a stick, but at least this is the output when I type the command.

to:

I don't know though if the dmesg command outputs are enough specific to identify a stick, but at least this is the output when I type the command and may help you identifying a working stick.

April 19, 2008, at 04:08 PM by bluebear -- added info about a working USB stick
Changed lines 24-35 from:

2007.4.29, dlumberg: I couldn't get My 1GB flash disk to format for trying. I finally went to http://www.ntfs.com/quest22.htm followed the directions to format it as NTFS, then the format utility formatted it no problem.

to:

2007.4.29, dlumberg: I couldn't get My 1GB flash disk to format for trying. I finally went to http://www.ntfs.com/quest22.htm followed the directions to format it as NTFS, then the format utility formatted it no problem.

2008.4.19, bluebear: The same with me. I have a 4GB flash disk from Intenso. I have also tried the formatfix-guide located at FailedFormatFix?, but it didn't work. In the end the problem was solved by the solution of dlumberg: Formatting with NTFS and then formatting with the web tool.

So this USB Stick definitely works on my slug with Unslung 6.10 beta: On the slug try

# dmesg | grep Vendor
  Vendor: Ut165     Model: USB2FlashStorage  Rev: 0.00

I don't know though if the dmesg command outputs are enough specific to identify a stick, but at least this is the output when I type the command.

April 30, 2007, at 01:06 AM by dlumberg -- 1GB Flash drive not formatting with web utility
Changed lines 22-24 from:

to:

2007.4.29, dlumberg: I couldn't get My 1GB flash disk to format for trying. I finally went to http://www.ntfs.com/quest22.htm followed the directions to format it as NTFS, then the format utility formatted it no problem.

April 12, 2007, at 01:20 PM by fcarolo -- link formatting
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I have changed a router to WRT54GS?. I have changed an enclosure to another one - still have the same problem.

Then Iíve checked the disk health (HD Tune utility under WinXP?). It seems that the disk had bad sectors which were not recognized during formatting into NTFS (under WinXP?). Strange...

to:

I have changed a router to WRT54GS. I have changed an enclosure to another one - still have the same problem.

Then Iíve checked the disk health (HD Tune utility under WinXP). It seems that the disk had bad sectors which were not recognized during formatting into NTFS (under WinXP). Strange...

April 11, 2007, at 11:41 AM by Trurl --
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My case (v23R72, Seagate 500MB): a disk works fine if formatted into NTFS. But canít be formatted under NSLU2: disk formatting takes about 20..30 minutes (disk works very hard). After that a slug hangs up (web interface does not respond). After hard reset of NSLU2 (soft turn off/on doesnít work) I find disk "No formatted" but already divided into three partitions (two are small & one is big). The above solution doesnít work.

to:

2007.03.10, Trurl: My case (v23R72, Seagate 500MB): a disk works fine if formatted into NTFS. But canít be formatted under NSLU2: disk formatting takes about 20..30 minutes (disk works very hard). After that a slug hangs up (web interface does not respond). After hard reset of NSLU2 (soft turn off/on doesnít work) I find disk "No formatted" but already divided into three partitions (two are small & one is big). The above solution doesnít work.

Added lines 20-21:

2007.04.10, Trurl: I've got a new disk instead of the old one (the same model). Now everything works great! I mean I can format the disk without problems. So the reason was the broken disk.

March 19, 2007, at 03:04 PM by Trurl --
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Added line 15:
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March 19, 2007, at 03:04 PM by Trurl --
Changed lines 12-16 from:
  • My case (v23R72, Seagate 500MB): a disk works fine if formatted into NTFS. But canít be formatted under NSLU2: disk formatting takes about 20..30 minutes (disk works very hard). After that a slug hangs up (web interface does not respond). After hard reset of NSLU2 (soft turn off/on doesnít work) I find disk "No formatted" but already divided into three partitions (two are small & one is big). The above solution doesnít work.
  • I have changed a router to WRT54GS?. I have changed an enclosure to another one - still have the same problem.
  • Then Iíve checked the disk health (HD Tune utility under WinXP?). It seems that the disk had bad sectors which were not recognized during formatting into NTFS (under WinXP?). Strange...
  • Iíve sent the disk to the seller (it was a new one). The I will try to format next disk after its replacement...
to:

My case (v23R72, Seagate 500MB): a disk works fine if formatted into NTFS. But canít be formatted under NSLU2: disk formatting takes about 20..30 minutes (disk works very hard). After that a slug hangs up (web interface does not respond). After hard reset of NSLU2 (soft turn off/on doesnít work) I find disk "No formatted" but already divided into three partitions (two are small & one is big). The above solution doesnít work. I have changed a router to WRT54GS?. I have changed an enclosure to another one - still have the same problem. Then Iíve checked the disk health (HD Tune utility under WinXP?). It seems that the disk had bad sectors which were not recognized during formatting into NTFS (under WinXP?). Strange... Iíve sent the disk to the seller (it was a new one). The I will try to format next disk after its replacement...

March 19, 2007, at 01:55 PM by Trurl --
Changed lines 8-17 from:

One way to make sure that formatting is completed prior to rebooting is to get an enclosure that shows disk activity. Do not reboot while there is disk activity. Then reboot and click format again.

to:

One way to make sure that formatting is completed prior to rebooting is to get an enclosure that shows disk activity. Do not reboot while there is disk activity. Then reboot and click format again.


  • My case (v23R72, Seagate 500MB): a disk works fine if formatted into NTFS. But canít be formatted under NSLU2: disk formatting takes about 20..30 minutes (disk works very hard). After that a slug hangs up (web interface does not respond). After hard reset of NSLU2 (soft turn off/on doesnít work) I find disk "No formatted" but already divided into three partitions (two are small & one is big). The above solution doesnít work.
  • I have changed a router to WRT54GS?. I have changed an enclosure to another one - still have the same problem.
  • Then Iíve checked the disk health (HD Tune utility under WinXP?). It seems that the disk had bad sectors which were not recognized during formatting into NTFS (under WinXP?). Strange...
  • Iíve sent the disk to the seller (it was a new one). The I will try to format next disk after its replacement...

October 04, 2006, at 06:09 AM by AM -- Wait until format is complete before reboot
Changed lines 6-8 from:
  1. Click format again.
to:
  1. Click format again.

One way to make sure that formatting is completed prior to rebooting is to get an enclosure that shows disk activity. Do not reboot while there is disk activity. Then reboot and click format again.

August 22, 2006, at 06:49 PM by garbled -- add details on how to format stubborn disks.
Added lines 1-6:

When adding a brand new disk straight out of the retail box to my slug, I noticed Unslung would not format it. The web status would go to formatting, and then quickly return to "Not Formatted". This is because the first time it runs, it executes the fdisk command, but the new partition changes are not noticed until the machine is rebooted. The easy way to fix this is to:

  1. Attach new disk
  2. Click format
  3. Reboot
  4. Click format again.
view · edit · print · history · Last edited by hwlester.
Based on work by hwlester, MarkHu, Walter Vos, bluebear, dlumberg, fcarolo, Trurl, and AM.
Originally by garbled.
Page last modified on December 01, 2008, at 07:36 AM