First post, by W.x.
What's manufactured date of this HDD? Datecode is 9941
The problem is, Seagate started to use fiscal 4-digis or 5-digit code, somewhere around 2000, but I don't know at which point.
So it can be 41th week of 1999, or 1998-07-22 if it's fiscal year date code.
Fiscal datecode:
Date Code Shape: YYWD or YYWWD
* YY: fiscal year, beginning on the
1st Saturday of July YY-1
* W[1-9] or WW[10-52]: fiscal weeks
from 1st Saturday of July YY-1
* D: days from the beginning of week
WW (weeks run from Sat to Fri)