MS-DOS Not recgonizing HDD

Feb 9, 2018
Hello, so i have a old Microspot 486SLC computer that i found. it had a hard drive but it was broken so i replaced it with a 80GB Fujitsu one, formatted it in the BIOS as a 100MB hdd,and in the setup MS-DOS 6.22 just says that a hard drive isnt recgonized and starts installing MS-DOS on a diskette
any help would be appreciated!
Those old bios(es) can't see such big HDDs it doesn't matter that you formatted it to 100MB the rest of the size is still there and the bios can't cope with it.