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- Newsgroups: comp.sys.dec
- Path: sparky!uunet!telebit!eric
- From: eric@telebit.com (Eric Smith)
- Subject: Re: Declassification of disks and DEC
- In-Reply-To: m1b@rayssd.ssd.ray.com's message of Tue, 21 Jul 1992 17:45:06 GMT
- Message-ID: <ERIC.92Jul22192456@iceland.telebit.com>
- Sender: news@telebit.com
- Nntp-Posting-Host: iceland.telebit.com
- Organization: Telebit Corporation
- References: <1992Jul21.174506.25517@rayssd.ssd.ray.com>
- Date: 22 Jul 92 19:24:56
- Lines: 20
-
- >>On Tue, 21 Jul 1992 17:45:06 GMT, m1b@rayssd.ssd.ray.com (Barone) said:
- > ... It seems
- > that the formatter will write all zeros to bad blocks rather than the
- > specified pattern that we selected. It doesn't matter that the data
- > is gone (we couldn't prove it, that block may have always contained
- > zeros) -- what matters is that the pattern isn't what we specified.
-
- Of course, if you have a bad sector it may be that you can't possibly write
- to it such that it will read back the pattern you want.
-
- The formatter in question may be failing to write to those sectors, or writing
- zeros to them. Also, even if the formatter did write the pattern you
- specifed to a bad sector, it may be that it is unable to read it (because it's
- bad), and returning zeros.
-
- I don't know anything about HSCs and RA82s though, so this may have nothing
- to do with it.
-
- Cheers,
- Eric
-