ACRONIS DD10DB Datasheet download pdf (Page 121)

Particularities of Operating Systems

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• WINBOOT.INI (alternative MSDOS.SYS)

• CONFIG.SYS (for all DOS versions)

• AUTOEXEC.BAT (for all DOS versions)

B.1.4 Limitations

Different DOS versions have the following limitations:

• Only MS-DOS 7.1/8.0 supports FAT32 along with the FAT16 file system

• Only MS-DOS 7.1/8.0 supports extended BIOS and hard disks larger than 8 GB – but

only with FAT16 LBA, FAT32 LBA and EXTENDED LBA partitions. This can cause

conflicts with other DOS versions that are installed on the same computer

• For MS-DOS, the boot partition should be the partition to which drive letter C: is

assigned; otherwise the operating system’s booting will not finish

• MS-DOS and PC-DOS have trouble accessing multiple primary partitions if the hard

disk contains logical partitions that were not recognized by DOS

Due to the limitation of boot code in most DOS–like operatin

systems, their boot partitions

should be located in the first 2 gigabytes of a hard disk.

B.2 Windows 95/98/Me

Under Windows 95/98/Me, booting always starts with MS-DOS, thus everything

concerning MS-DOS 7.x/8.0 booting applies to Windows 95/98/Me as well.

B.2.1 Supported Versions

Acronis Disk Director Suite supports Windows 95 and Windows 95OSR2/98/Me and can

detect their language version.

B.2.2 Booting Details and Limitations

Windows booting starts when MS-DOS executes the WIN.COM file. This program loads

the Windows kernel that loads drivers, arranges memory allocation and starts the shell

program (EXPLORER.EXE).

Drivers that were loaded rescan the partition structure and assign letters to partitions that

were not visible from MS-DOS.

There are several differences between Windows 95/98/Me versions:

• Windows 95 contains MS-DOS 7.0, does not support FAT32 and due to MS-DOS 7.0

limitations, it cannot be booted from partitions that are located beyond the 1024th

cylinder

• Windows 95 OSR2/98 contains MS-DOS 7.1 and supports FAT32

• Windows Me contains MS-DOS 8.0, which supports FAT32, but does not allow the use

of MS-DOS

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ACRONIS DD10DB Datasheet Page 121