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- Newsgroups: comp.os.os2.misc
- Path: sparky!uunet!usc!rpi!usenet.coe.montana.edu!news.u.washington.edu!serval!yoda.eecs.wsu.edu!bgraham
- From: bgraham@yoda.eecs.wsu.edu (Brooks Graham )
- Subject: Re: OS/2 hard drive: SCSI or IDE?
- Message-ID: <1992Aug12.213645.23348@serval.net.wsu.edu>
- Sender: news@serval.net.wsu.edu (USENET News System)
- Organization: Washington State University!
- References: <713121754snx@bai.baylis.COM> <1992Aug7.195726.19716@njitgw.njit.edu> <92Aug09.202909.15957@acs.ucalgary.ca> <1992Aug11.162209.7470@njitgw.njit.edu>
- Distribution: na
- Date: Wed, 12 Aug 92 21:36:45 GMT
- Lines: 23
-
- >>So, what does low-level formatting of a voice-coil drive mean?
- >
- >Same as before. You still need some markers to locate the tracks and
- >sectors. Those voice-coils need to read some references. They are
- >NOT permanent! The magnetic image of the track-sector reference marks
- >(including the prologue/epologue signatures) fade with time. They are
- >only written by a low-level format procedure.
- >
- >Voice-voil drives don't have problems with tracks "drifting" across
- >the platter, but they can have problems with the track markers fading.
- >
- >It isn't usually necessary, but is sometimes is. Note also, that
- >low-level formatting re-initializes the partition table. This is
- >necessary if you're de-installing Unix, for example.
-
- Be aware, however that the standard 'low-level' formatting of a
- voice-coil drive does _not_ rewrite the servo tracks. This is an
- analog signal that requires specialized harware to write.
-
- Brooks Graham
- bgraham@yoda.eecs.wsu.edu
-
- >--
-