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Hi all, |
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|
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I've bought a simple and cheap USB key/MP3 player by memup. |
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The kernel says: |
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sdc: Write Protect is on |
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How to disable this write protection? |
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|
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[all details bellow] |
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I use hal/udev/ivman/pmount. When I insert the drive in my gentoo box, it is |
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mounted by ivman/pmount in /media for the current user |
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# df -T /dev/sdc |
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Filesystem Type 1K-blocks Used Available Use% Mounted on |
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/dev/sdc vfat 251496 1344 250152 1% /media/REGIS_USB |
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|
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drwx------ 2 regis users 16384 jan 1 1970 |
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/media/REGIS_USB |
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|
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|
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And /media/REGIS_USB does list the content of the USB drive. |
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|
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Now, I can't write anything on this filesytem. |
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regis /media/REGIS_USB % touch |
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toto |
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|
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touch: cannot touch `toto': Read-only file system |
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|
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As I understand my trivial configuration, this should be mounted read+write. |
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Just in case, I tried: |
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kro64 REGIS_USB # mount -o rw,remount /media/REGIS_USB/ |
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mount: block device /dev/sdc is write-protected, mounting read-only |
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|
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dmesg says |
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usb 2-4: USB disconnect, address 2 |
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usb 3-4: new full speed USB device using ohci_hcd and address 10 |
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usb 3-4: configuration #1 chosen from 1 choice |
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scsi7 : SCSI emulation for USB Mass Storage devices |
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usb-storage: device found at 10 |
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usb-storage: waiting for device to settle before scanning |
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Vendor: Model: Rev: |
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Type: Direct-Access ANSI SCSI revision: 00 |
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SCSI device sdc: 503521 512-byte hdwr sectors (258 MB) |
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sdc: Write Protect is on |
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sdc: Mode Sense: 00 c0 00 80 |
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sdc: assuming drive cache: write through |
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SCSI device sdc: 503521 512-byte hdwr sectors (258 MB) |
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sdc: Write Protect is on |
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sdc: Mode Sense: 00 c0 00 80 |
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sdc: assuming drive cache: write through |
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sdc: unknown partition table |
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sd 7:0:0:0: Attached scsi removable disk sdc |
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sd 7:0:0:0: Attached scsi generic sg1 type 0 |
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usb-storage: device scan complete |
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|
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I have another usb key which is mounted rw as expected. The major difference |
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I see is that dmesg says about the other key: |
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sdc: Write Protect is off |
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|
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So: I do change this Write-protect parameter? |
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|
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Thanks and merry Easter. |
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|
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-- |
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Régis |
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|
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-- |
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Régis |
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