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- Path: cph-1.news.DK.net!dkuug!dknet!dkbbbs!peter.larsen
- From: peter.larsen@dkb.dk (PETER LARSEN)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Harddisk Dead! HELP!
- Message-ID: <8BF136C.11960013E1.uuout@dkb.dk>
- Date: Sun, 21 Apr 96 14:36:00 +0100
- Distribution: world
- Organization: Danish Key Board BBS - Copenhagen Denmark - +45 3325 5600
- Reply-To: peter.larsen@dkb.dk (PETER LARSEN)
- References: <4l8dqi$1ol@nuhou.aloha.net>
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-
-
- Hi Richard and Koivvunalho,
-
-
- RD> Koivunalho Mikko (mikkoi@utu.fi) wrote: : Please help me! : : A
- RD> beautiful day turned into a nightmare when the GVP-SCSI in my A2000
- RD> : refused to boot: it couldn't find a bootable device.
-
- First of all, go looking for good old bootback, it deserves to be on the
- bootable rescue-disk you and everybody else ought to have, toghether with
- at least one disk-repair programme, your backup-programme and a really
- good dirutil. What it can do is to read the bootblock of *any* device,
- save it as a file and if need be restore it.
-
- RD> I seem to
- RD> have lost : my Rigiddiskblock! Can only wonder HOW!
-
- Not much wondering to do, it is approximately 98.5489 percent certain
- that it is the action of a virus, the remaining probabily is generally
- speaking taken up by software making an uptrapped division by zero error
- and writing erratically just about anywhere on the disk, with a
- remaining infinitisimal probability the the harddisk has suffered a r/w
- error and/or a headcrash damaging the boot-sector.
-
- RD> is there any way
- RD> I could still : return the partitions, even if only tempererily, to
- RD> use DiskSalv on them? :
-
- Yup, if you have made them with Faastprep/expertprep, and you have a not
- of their exact cylinders, megabytes isn't good enough, it *must* be
- exact, then you just reinstall the drive like it is and write a new
- bootblock. You may then magically have all the partitions showing up
- again, formatted and acessible. But I can't guarantee this, anyway, if
- they don't keep your calm: do a format [partition] [same filesystem]
- name [same name] QUICK. Note that the QUICK is vital, if you forget it,
- everything on the disk will be overwritten, and permanently lost, by
- remembering it all that gets done is that you get a new rootblock, and
- then you have a freshly formatted seemingly empty disk. You will also
- get the trashcan, and if you didn't have that one before, then you will
- lose the content of exactly two diskblocks, nothing more.
-
- And now it is time for special magic, all files are there, but they
- don't show up in the file-system, so what you do is to use DISKSALV in
- unformat mode, and let it find everything. Chances are in fact that your
- disk well be saner afterwards, than it was immediately before the crash.
-
- You might not have notes of the exact partition-locations in terms of
- cylinders, if so, do *not* try to recreate the partitions, make the
- drive one big partition, format QUICK (forget the quick, and all is
- lost, so DO NOT FORGET IT!). You then have an accessible drive with a
- file-system that shows it empty, but it isn't - all is still there. BUT
- it can not be simply restored, using Disksalv in unformat mode *may*
- work, or repair mode, or any mode, but hey: in this situation you should
- start with SALVAGE mode only. Disksalv can read the disk, but there
- won't be much logic about it, for instance with great probability quite
- a few files of the same name.
-
-
- RD> Big thanks beforehand! : Try booting
- RD> with floppies. If you have another partition on the hard drive or
- RD> another hard drive od can borrow another hard drive-to temporarily
- RD> insert in your computer or buy a new one, then disksalv Old: to New:
-
- I second that, disksalving to disk may work, but disksalv doesn't have
- have too elegant a way to handle files that won't fit on one disk, you
- could of course just skip them, but you might not want to in case they
- are say you message-database. So borrowing an additional disk (or buying
- one second hand or new - small disks (less than 400 megs) are quite
- cheap nowadays, and in fact almost only available second hand!) is the
- thing to do. Having two physical drives is in my opinion almost a *must*
- because it makes the system soo much more error tolerant.
-
- RD> or coppy Old: to new: if you can.
-
- IF you have two physically identical harddisk partitions, I do think you
- can diskcopy them, but in the scenario of having one big partion
- containing what previously was on say three partitions, and a file-
- system claiming it empty, it still would.
-
- RD> I try to coppy, the I try to Disksalv. Above all when I purchased mi
- RD> 1Gig drive I left 50% as SPARE: so in the event I get what you did I
- RD> have a door out :)
-
- But with your setup, it *might* be possible to actually diskcopy one
- partition to the other, but I've never verified that.
-
- RD> Good luck so sorry you are in trouble! What a
- RD> HEADACHE. Aloha! Richard
-
- Nah - he is not really in 'trouble', he just has some menial work to do,
- and it will probably take him longer time than it would have taken to
- have a sensible backup-structure. There's some wisdom in that .... at
- least afterwards, and don't think I haven't made the goof of not having
- a sufficiently recent backup ... I have. I even made the goof of
- thinking it was recent enough once ... so I skipped attempting to
- repair, and just formatted and reinstalled from backup, and poof wen't
- two weeks work with making a database of everything that was on my
- videotapes, so that I could index them just with numbers ....
-
- As an alternative to the most recent distributable version is a
- reasonably new version of Quarterback tools, just use 'repair mode', and
- it might be able to also fix the 'single partion mess of three earlier
- partions, but this appears to be a case for Disksalv in SALVAGE mode.
-
-
- Kind regards
-
- Peter Larsen
-
-
-
-
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