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- Path: sparky!uunet!psinntp!lupine!wallich
- From: wallich@ncd.com (Ken Wallich)
- Newsgroups: comp.sys.mac.system
- Subject: Re: Duo's: Are Redundant Systems A Good Idea?
- Message-ID: <wallich.725062591@lupine>
- Date: 22 Dec 92 22:16:31 GMT
- References: <562@blue.cis.pitt.edu> <1992Dec13.184407.16748@nwnexus.WA.COM> <1992Dec14.000559.271@blaze.cs.jhu.edu>
- Sender: wallich@NCD.COM
- Reply-To: wallich@ncd.com (Ken Wallich)
- Distribution: na
- Lines: 36
-
- scott@rhombus.cs.jhu.edu (Scott Smith) writes:
-
- >The only solution I know of is to create a RAM Disk and put a minimal
- >system folder there (make aliases for the noncritical stuff, pointing
- >to the hard disk version), and make the RAM disk your startup disk.
- >And, never shut down, only sleep or restart. Keep a backup system
- >folder on your hard disk. Now you get two boot chances, one with the
- >RAM disk and another with your main disk.
-
- Sounds good in principle. I used to boot from Ram disc on my 140.
- Aside from having to dedicate 6 meg to the disc get a fully functional
- system, if for any reason the power gets flinky, like when the battery
- moves around a little in it's compartment, common on normal Powerbooks
- when transporting them on a motorcycle, like I do, you get hosed.
- Although I believe it's ok to remove the battery of a sleeping DUO,
- and not trash it, unlike the other Powerbooks (save the 100).
-
- Basically, anything that would waste your RAM disc will hose your
- machine. When my RAM disc would crash, it still thought it was the
- boot volume, and hung trying to boot from a now garbage "disc". I had
- to use a floppy to recover. You'll "usually" be ok, but I'd trust
- my hard drive more.
-
- Of course, if you had a floppy, or you could hook your machine up via
- the dock you don't have to another machine, you could create two
- partitions on your single hard drive, and dedicate one just to be a
- system volume, and put a backup on the other partition. You can't do
- that unless you can back up the drive first though. So, once you have
- the dock, alleviating the worry, you can do something about it :-).
-
- >Now suppose my disk crashes and needs reformatting. Can I do all this
- >from my RAM disk?
-
- If you can still boot, and you have all the utilities copied onto your
- RAM disc (not just aliases), then yes.
-
-