[comp.sys.mac] HD unusable free space

hill@petsd.UUCP (John S. Hill) (09/12/89)

Hi.  This is a question that was asked a few weeks ago, but was either never
responded to or I simply missed the answer.

When formatting a 40Mb Apple HD using the "Maximum Macintosh" option, why does
the Apple HD Setup program (v2.0 - came with sys 6.0.2) leave an unusable free
space at the end of the Macintosh partion?  Last night, I reformatted my drive
using the "custom" option and specified the entire drive (less driver).  Now
I have something like an extra 1900kb of disk space and it works fine.  Neither
Disk Express nor Disk First Aid had anything bad to say when I examined the
volume.  Is adding this extra space potentially a bad thing to do?

Please email any responses, as due to the volume in this group, I sometimes
miss postings.  Thanks.


-- 
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|  |  |  |___|  ____|    |    |   |  |  \|  |____|       |____|    |
                               ...there is no substitute (except a ZR1 'vette!)

John S. Hill -- UUCP: {princeton,att,decvax}!petsd!hill

dwells@Apple.COM (Dave Wells) (09/12/89)

In article <1686@petsd.UUCP> hill@petsd.UUCP (John S. Hill) writes:
>
>Hi.  This is a question that was asked a few weeks ago, but was either never
>responded to or I simply missed the answer.
>
>When formatting a 40Mb Apple HD using the "Maximum Macintosh" option, why does
>the Apple HD Setup program (v2.0 - came with sys 6.0.2) leave an unusable free
>space at the end of the Macintosh partion?  Last night, I reformatted my drive
>using the "custom" option and specified the entire drive (less driver).  Now
>I have something like an extra 1900kb of disk space and it works fine.  Neither
>Disk Express nor Disk First Aid had anything bad to say when I examined the
>volume.  Is adding this extra space potentially a bad thing to do?

>Please email any responses, as due to the volume in this group, I sometimes
>miss postings.  Thanks.

Because of the number of times I've seen the question, I'm posting this reply
anyway.  I'll mail a copy to John directly.

Extra space exists on all hard disks partitioned by HD SC Setup's default
partitioning options.  A decision was made to create standard default
partitions because of Apple's need to source drives from different
manufacturers.  Since few hard drives, even from the same manufacturer, have
identical storage capacity, we decided to make standard partition sizes for
each of the Apple Hard Drives - 20, 40, 80 and 160.  Standard partition
sizes reduce support problems caused by restoring image backups between
different sized partitions and worrying about "Bill's drive having 2.8K
more space than mine." etcetera.

Other than the above, I can't think of any reason why you shouldn't use
the custom partition option to make whatever sized partition you desire.


-Dave

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           Dave Wells, Apple Computer, Inc.  MS: 37-O  (408) 974-5515
          Mail: dwells@apple.com or AppleLink d.wells or GEnie D.WELLS
 These opinions may be nothing more than the ramblings of a fatigued tinkerer
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 There's one big difference between genius and stupidity.  Genius has limits.
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