[SATLUG] RAID5 & ddrescue

Geoff geofff at w5omr.shacknet.nu
Sun Aug 23 19:18:57 CDT 2009

David Labens wrote:
> Herb, 
> THAT is exactly how I feel!  It's interesting to note that I built my OS on an 80 gb drive that was /dev/sda - at the time.  I had no other drives connected.  Without changing where /sda was connected, I then connected the other 4 drives for the RAID5 array, and suddently the system wouldn't boot - because the 80 gb drive was no longer the boot drive, and I had to reset bios to make it that way, AND, my OS drive was suddenly /sdd !!!
> I'm in the midst of the epiphany that the /sd# is not hardware specific except in relation to whatever else happens to be connected AT THAT MOMENT.  But, using:
> smartctl -a /dev/sd# 
> means I can see what the /sd# is, size drive and serial number, so I'm able to identify it from looking at it.

soon after boot up, you can run (at the command prompt)

dmesg | grep -i sd

to find out where what is (I know.. 2nd base) ;-)

same with hd, instead.


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