Your kernel log, dmesg, shows these messages:

[   98.905709] end_request: I/O error, dev hdb, sector 240121600
[   98.905733] Buffer I/O error on device hdb, logical block 30015200

These are usually indicative of hardware failure or imminent failure.  I
recommend using smartctl from the smartmontools package to test your
hard drive.  I believe a test would look like 'smartctl -t short
/dev/hdb' and then you check the output via 'smartctl -a /dev/hdb'.

-- 
Partitions are not recognized by installation process
https://launchpad.net/bugs/84780

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