You ask what the file size limit would be if you boot a DOS disk As noted this would depend on what version of DOS youre booting.

Ms-dos format file size limit. Now in Windows 10 the limit can be increased by the following group policyregistry. Since a 32-bit number is used for the file size in theory files can be as large as 4 GB. FOR F usebackq A IN file DO set sizezA.

Minimum MS-DOS hardware requirements are. 2 64 bytes 16 ExaBytes minus 1KB. Cluster addresses were increased to 16-bit allowing for up to 65526 clusters per volume.

Microsoft introduced MS-DOS 30 in parallel. 512K conventional memory Floppy drive for installation Approximately 35 MB of free disk space for all the supported components Later versions of MS-DOS 622 and earlier ship on three installation floppy disks. Although cluster addresses were 16 bits this format was not what today is commonly understood as FAT16.

Use the diskuse command to find files over a certain size. According to my understanding and research for windows version has the limit of the maximum path of the filefolder including the driver and path. 2 44 bytes 16 TeraBytes minus 64KB.

4 GB FAT32 or the even older FAT16 is the file system used in older MS-DOS and Windows systems. Standard - 83 Extended - up to 255. MS-DOS Partitioning Summary says MS-DOS began supporting hard disks in version 20 MS-DOS 2x supports one type 01 partition of up to 15 megabytes MB in size which uses a 12-bit file allocation table FAT.

It is almost never used anymore because almost nobody has partitions as small as 4GB. FAT32 maximum file size - 4GB. The file creation process will fail with an Access Denied error if the file size exceeds the limit of the particular OS youre running.