Path: utzoo!utgpu!water!watmath!clyde!att!pacbell!lll-tis!helios.ee.lbl.gov!pasteur!ucbvax!bloom-beacon!mit-eddie!mit-amt!usenet
From: usenet@mit-amt.MEDIA.MIT.EDU (Remote news user)
Newsgroups: comp.sys.ibm.pc
Subject: hard disk problem
Keywords: hard disk, WA2, Seagate
Message-ID: <2810@mit-amt.MEDIA.MIT.EDU>
Date: 23 Jul 88 03:20:41 GMT
References: <2546@mipos3.intel.com> <16800323@clio> <5739@gssc.UUCP>
Reply-To: pshen@atrp.media.mit.edu (Paul Shen)
Organization: MIT Media Lab
Lines: 20

AT-clone). The hard disk is a Seagate ST-225. The problems are:
From: pshen@mit-atrp.UUCP (Paul Shen)
Path: mit-atrp!pshen

	1. The hard disk drive operation light which connects to the disk 
control board is on only when there is a disk operation. But the light on 
the hard disk (ST-225) is always on. Is this normal?

	2. When the computer system is operating at 12MHz, 0-wait, there
is always some bytes of data been changed randomly in the hard disk write 
operation. This problem happens more often, When there is a long continuous 
disk operation, like copy a large file from one directory to another 
directory in the same hard disk. But when I set the system to 12MHz, 1-wait, 
it works just fine. I have never found any problem under that condition. 
Is this the problem caused by the disk controller or others?

Thanks in advance.
							Paul

pshen@atrp.media.mit.edu