"I don't think you should have run the ATTRIB command prior to defragging. Some files aren't supposed to be moved (...). Neither should you have done the 'attrib +s +h +r \*.* /s'" (...). There's another system file--msdos.sys--that I don't think can be moved".
Well, I followed exactly what the documentation of Presizer stated:
"In order to use Partition Resizer to shrink a partition, you'll have to
defragment it first... You will have to move ALL the files to the beginning of the partition
(including unmovable files). To move unmovable files, use ATTRIB to change
their attributes (-s -h -r). When defraging take special care for the unmovable files: They must be moved too, so change their attributes before defraging the disk".
"MSDOS.SYS: This file can be moved or defragmented as any ordinary file".
From the DOS prompt I can see there exists an msdos.sys file in c:\ (root), i.e. where it should be, I think. It has a size of 1.658 B.
Windows version is 4.00.950.
Anyway, I don't care that much about that old Windows installation - it just strikes me something went wrong with the "attrib +s +h +r \*.* /s" command I applied. Prior to this, everything was O.K. - even when I first applied thw the "attrib -s -h -r \*.* /s" command.
I could well reinstall Windows 95 over the old installation - the only problem is that the Compaq Contura 420c does not have a CD-ROM, just a floppy drive! There are also two pcmcia slots, I'll check if DOS recognises cards when inserted.
Some years ago, I had bought the whole series of Windows 95 diskettes - thinking that they are something of a museum item! I never thought I could need them one day. Seems that if DOS doesn't recognise pcmcia, I'll perhaps have to find that old set of diskettes again...
I'll give Presizer and Fdisk a try (Presizer is a complementary program to Fdisk). It is a good opportunity to learn how to resise disks from DOS and experiment a little bit - I bought the Contura cheaply, just for experiments with different operating systems.
Thanks everybody for helping...