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- Xref: sparky comp.sys.mac.misc:21249 comp.sys.mac.system:15642
- Newsgroups: comp.sys.mac.misc,comp.sys.mac.system
- Path: sparky!uunet!psinntp!sunic!corax.udac.uu.se!tdb!bredell
- From: bredell@tdb.uu.se (Mats Bredell)
- Subject: Re: disabling extensions: extension manager
- Message-ID: <1992Dec31.171637.17910@tdb.uu.se>
- Reply-To: Mats.Bredell@udac.uu.se
- Organization: Uppsala University Computing Center (UDAC)
- X-Newsreader: TIN [version 1.1 PL6]
- References: <1992Dec30.144847.20754@slcs.slb.com>
- Date: Thu, 31 Dec 1992 17:16:37 GMT
- Lines: 59
-
- Harvey Brydon (918)250-4312 (brydon@ASLVX1.SLB.COM) wrote:
- : In article <1992Dec29.155209.16121@tdb.uu.se>, bredell@tdb.uu.se (Mats
- : Bredell) writes:
- : >Peter Bell (bell-peter@yale.edu) wrote:
- : >: In article <1992Dec23.141811.11598@tdb.uu.se> Mats.Bredell@udac.uu.se writes:
- : >: >Noam G. Nudelman (P88038@BARILVM.BITNET) wrote:
- : >: >:
- : >: >: Hi,
- : >: >:
- : >: >: I am interested in changing some system extensions so that
- : >: >: when I hold the Shift botton down while booting, they will NOT be
- : >: >: disabled.
- : >: >:
- : >: >: Any help will be appreciated.
- : >: >
- : >: >As far as I know, it's (almost) impossible. Apple has made it with the
- : >: >Tune-Up by adding a driver that loads the INIT somehow, but it's tricky.
- : >:
- : >: yeah, as far as I know, the only solution is to use the extension manager
- : >: control panel (at sumex, et al.) to select a group of extensions to
- : >: enable at startup, disabling the rest. It works quite well.
- : >
- : >Yes, but this won't solve the problem. If you hold down the shift key, the
- : >system won't load any extensions at all.
- : >[...]
- :
- : Two suggestions that I think do what you want.
- :
- : (1) If you want some extensions to load and not others, move the ones you
- : don't want into a temporary folder.
- :
- : (2) While holding down shift disables all extensions, many (but alas, not all)
- : extensions allow you to set another key (caps lock, control, option, command,
- : or combinations of these) that disable that particular extension. Why not set
- : all of these but the one you want to disable themselves with (say) the option
- : key? I would avoid option/command and shift...
- :
- : Any reason why one of these two things won't work for you?
-
- The original question was about finding a way to force an extension to be
- loaded even if the shift key is being held down. The answer is simple: when
- the Mac boots, it checks to see if the shift key is down. If so, it doesn't
- load any extensions or control panels. You can't change this behaviour.
-
- Under system 6, the extensions checked for a key combination themselves, but
- system 7 has made the shift key as an override that will disable everything.
-
- One way to force an extension to be loaded is to write a device driver to
- do all the job. Device drivers are always loaded at startup. The driver colud
- be very simple, it's enough if it simply loads the extension code and starts
- executing. As far as I know, no one has done it yet (except for Apple
- themselves).
-
- /Mats
- --
- Mats Bredell Mats.Bredell@udac.uu.se
- Uppsala University Computing Center (UDAC) Ph: +46 18 187817
- Department of medical systems Fax: +46 18 187825
- Sweden Think straight - be gay!
-