June 11, 201016 yr So I used dd if=/dev/urandom of=/dev/sda bs=8192 seek=120000000 to start the dd cmd back again around the 1tb mark on the drive. It has been running since then and shows 965001494528 bytes (965 GB) copied, 190214 s, 5.1 MB/s currently. To me this means that it should be done with the entire drive now (2tb shows up as 1.81tb formatted). Should I expect some output when the drive finishes or will it simply keep running? Thanks. bux It will error out stating it can't write any more and stop on its own.
June 14, 201016 yr Author I guess this is more about preclear, but.... I ran the preclear tool on the other hdd I had and got this output: =========================================================================== = unRAID server Pre-Clear disk /dev/sdb = cycle 1 of 1 = Disk Pre-Clear-Read completed DONE = Step 1 of 10 - Copying zeros to first 2048k bytes DONE = Step 2 of 10 - Copying zeros to remainder of disk to clear it DONE = Step 3 of 10 - Disk is now cleared from MBR onward. DONE = Step 4 of 10 - Clearing MBR bytes for partition 2,3 & 4 DONE = Step 5 of 10 - Clearing MBR code area DONE = Step 6 of 10 - Setting MBR signature bytes DONE = Step 7 of 10 - Setting partition 1 to precleared state DONE = Step 8 of 10 - Notifying kernel we changed the partitioning DONE = Step 9 of 10 - Creating the /dev/disk/by* entries DONE = Step 10 of 10 - Testing if the clear has been successful. DONE = Elapsed Time: 49:59:51 ============================================================================ == == SORRY: Disk /dev/sdb MBR could NOT be precleared == == out4= 00000 == out5= 00000 ============================================================================ 0+0 records in 0+0 records out 0 bytes (0 B) copied, 1.9737e-05 s, 0.0 kB/s 0000000 It ran for almost 2 days, so I'd like to think it didn't do nothing, but I really don't know. Any insight is appreciated. Thanks. bux
June 15, 201016 yr Author OK, so I found the answer to my own question. I know, I know, search before posting. I apologize. I'm starting to think both of these drives are bad. Both SMART reports are attached. They both have the same error in what seems like a key place, but I really don't know enough to make sense of the whole thing. Any help is appreciated. Thanks. bux smart_12432.txt smart_12559.txt
June 23, 201016 yr Author Has anybody taken a look at those SMART reports for the 2 drives? I know one is toast (thanks Joe L), but not sure about the other. Thanks. bux
June 23, 201016 yr Sorry... my typo try: killall -USR1 dd Actually, I spelled the word right, but the command uses the abbreviated USR1, not USER1 Joe L. Can this be done on preclear? My Win (s**k) pc restarted and killed my telnet. I was in the middile of preclear script?
June 24, 201016 yr Can this be done on preclear? My Win (s**k) pc restarted and killed my telnet. I was in the middile of preclear script? Do a "ps -ef | grep -i clear | grep -v grep" to see if it's even running. Odds are it's no longer running unless you ran it under 'screen' or 'nohup'.
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