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I am a ... well let's say advanced user of LINUX and have now 10 happy years of experience with DEBIAN starting from version 5 Sid until the recent 8.2 Jessie.
Before that done 6 years of system administration including a SCO UNIX Server and a couple of Windows Servers and dozens of workstations. The largest system was nearly 100 PC's, devices etc. at 3 locations with LAN and VPN's, Firewall and Phone via landline and VoIP.

I like to experiment and then share the experience. With sharing I may post silly stuff and get corrected - the way to learn something from anybody.

Have fun, insight and maybe share your knowledge with me.
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Major disk trouble DRDY ERR and UNC error

Posted 11-07-2012 at 10:08 AM by error_401
Updated 12-18-2015 at 05:23 PM by error_401

Just happened:

Got a nasty error on my laptop running Debian Squeeze. Unable to boot further than initramfs with errors preventing the file system from mounting.

Nasty bugger. Seems to be a bad sector on my HDD. Causes several attempts to read and finally fails with
DRDY ERR and subsequent UNC error triggering the errors:
unable to mount rootfs etc.

Now trying with the installer CD-ROM in recovery mode. A bit nasty as I have unsaved data on that laptop. Fortunately most is backed up, just todays work...

Bad sectors -

To complete troubleshooting before reformatting I had the HDD removed and plugedd it back in several times to make sure it was not bad contacts. No luck still the same sectors broken which is proof of a dying harddisk.

Now trying a fresh install which may eliminate the bad sectors (I hope). Well another way to find out what the Debian installer is capable of.

Update: Well it was a disk error and unfortunately in the start portion of the initramfs. As I had all data saved from this laptop I started with a new install. Came up some handy tools which hopefully will prevent this from happening again without warning:

Installed: smartmontools and gsmartcontrol

Hope that it stays this way another while until I get a new laptop some day.
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