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Bad sectors when using MS-DOS 6.22
When I try to install DOS 6.22 in QEMU, I get many disk errors when the virtual disk is beeing partionized and formatted. When I later do a SCANDISK, I can see many bad sectors and file errors.
I have tested this with the following disk formats: qcow2, vmdk, raw.
I tested this on Windows 7 with the following command line and QEMU version:
qemu-system-i386 -name "Windows 3.11 WfW" -machine isapc -cpu 486 -boot order=adc -m 32 -soundhw sb16 -hda disk1.qcow2 -vga cirrus
qemu-system-i386 --version
QEMU emulator version 2.8.50 (v2.8.0-12557-g0bd1f6b1b2-dirty)
Copyright (c) 2003-2016 Fabrice Bellard and the QEMU Project developers
I then did a test with the linux version of qemu, which gave me the same results.
Command line: qemu-system-i386 -name "Windows 3.11 WfW" -machine isapc -cpu 486 -boot order=adc -m 32 -soundhw sb16 -hda disk1.qcow2 -vga cirrus -monitor stdout
Version: qemu-system-i386 --version
QEMU emulator version 2.1.2 (Debian 1:2.1+dfsg-12+deb8u6), Copyright (c) 2003-2008 Fabrice Bellard
I also checked the disk image with qemu-img, with no results:
No errors were found on the image.
7986/8000 = 99.83% allocated, 0.20% fragmented, 0.00% compressed clusters
Image end offset: 523698176
Because I got the error with two different versions of QEMU, I think this is a general problem and not related to a specific distribution.
I have attached a zip file with screenshots of SCANDISK, which shows the disk errors.
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