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Dell Optiplex 2030, 16gb sdram, 2tb sata drive (two drives), 3.3GHz Quad core, Windows 7 and ubuntu 15.10 installed in a dual boot configuration using grub. Two monitors. (Yes, its a nice machine.) Ubuntu is installed in /dev/sda5 with swap on /dev/sdb5

About two weeks ago (after 2 weeks of normal operation) during boot to ubuntu, I see the fsck message:

fsck from util-linux 2.26.2

/dev/sda5: clean, 325837/1001712 files, 1515411/3999744 blocks

So far, so good, though I don't understand why it did not do it in the beginning. (Maybe one of those "automatic" upgrades I let the system install?)

Now the problem... About one week ago, I started getting two more lines of text following the above two:

fsck from util-linux 2.26.2

/dev/sda5: clean, 325837/1001712 files, 1515411/3999744 blocks

[   19.983853] sd 6:0:0:0: [sdc] No Caching mode page found

[   19.983870] sd 6:0:0:0: [sdc] Assuming drive cache: write through

What is fsck telling me? Is something wrong? How do I fix it? If nothing is wrong, what kind of errors would I be looking for?

Thank you.

Alex S

  • The two lines are kernel diagnostic messages and are unrelated to fsck. If the system boots properly, nothing is wrong. – fkraiem Feb 15 '16 at 8:39
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may be partition or DIsk on your system corruption. In this case is /dev/sdc . please check and turn it out your system or fixed it, and try again. may be solve this problem

  • As far as I can tell, /dev/sdc is the USB memory stick I have in my computer. It is always mounted. I unmounted it and tried the boot again - no messages. I remounted it - Still no messages. Since then I have seen the messages once. Can anyone tell me what the messages mean? Thank you. To recap, the messages are [ 19.983853] sd 6:0:0:0: [sdc] No Caching mode page found [ 19.983870] sd 6:0:0:0: [sdc] Assuming drive cache: write through – Alex S Feb 17 '16 at 2:48
  • Update 2/17/2016 21:41 EST: I h ave seen the extra two lines several times at boot. This is intermixed with occasions of no lines. I still would like an explanation as I don't understand kernel messages. Thank you. – Alex S Feb 18 '16 at 2:42

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