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From: phys169@canterbury.ac.nz
Newsgroups: comp.sys.ibm.pc.misc,comp.os.msdos.misc
Subject: Re: How does one change a drive's cluster size?
Message-ID: <1990Aug1.112743.8829@canterbury.ac.nz>
Date: 1 Aug 90 01:09:32 GMT
References: <10114@accuvax.nwu.edu> <1086@van-bc.wimsey.bc.ca>
Organization: University of Canterbury
Lines: 21

In article <1086@van-bc.wimsey.bc.ca>, skl@van-bc.wimsey.bc.ca (Samuel Lam) writes:
> You should be able to back up that partition, then knock (just) it out
> with Disk Manager, then create a new Disk Manager partition in its
> place and high-level format that, and then restore your files into the
> new and improved (Disk Manager) partition.  Don't forget to swtich to
> using Disk Manager's dmdrvr.bin driver in config.sys before you attempt
> to access the new partition though.
> 
If you change cluster sizes, root dir size, etc, be careful to check the new
partition thoroughly. Also, it may seem easy to change parameters in the boot 
sector with something like Norton Utilities, without using DM and dmdrvr.bin;
but the o/s often ignores parameters (even if you know to reboot after changing
the parameters of your empty partition). DR DOS 5.0 is much better than MS DOS,
but even it gets upset when it comes to sub-directories. Moral of story:
try filling the disk to completely full, including filling the root directory
and creating some largish subdirectories, then run CHKDSK and see if there are
errors. Some changes are okay, under some circumstances, many are not. Second
moral of the story: DM is a darned good product. 

Mark Aitchison, Physics, University of Canterbury, New Zealand.
Say, how do you spell "Ying tong iddly po"?