486 hard drive on dos 7 \ VOGONS

486 hard drive on dos 7

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First post, by andy120

Posted on 2022-03-28, 07:04

andy120 Offline

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im having trouble getting a 486 to use 32 bit partition. it sees the cf card as 2 gig correctly and fdisk can only see 512mb. 32 bit is enabled in the bios. with 98 or dos 7 installed it will not read the hdd and either system halts or no os errors. 6.22 fdisk only seems to have fat16. i cannot use a floppy and have been loading from another pc on dos 7/w98. i have a isa i/o card but i do not know how to enable the floppy port without getting an error from the (missing) onboard fdc. options?

Reply 1 of 3, by waterbeesje

Posted on 2022-03-28, 08:12

waterbeesje Offline

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Bios limits, probably the system is not set to handle LBA. If it can at all, as many 486 some sort LBA at all.

Stuck at 10MHz...

Reply 2 of 3, by andy120

Posted on 2022-03-29, 18:16

andy120 Offline

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So, i have got LBA to work on a D drive (fat32) but if i put that drive in C it will give me no rom, system halted. LBA is enabled. could there be something that it can only boot to a fat16? there is no specific 13h.

Reply 3 of 3, by waterbeesje

Posted on 2022-03-29, 18:25

waterbeesje Offline

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Did you recreate partitions and format the cf under DOS? Also you could try the "fdisk /mbr" switch to (re)construct the master boot record.

Most cf are not directly suitable for bootable DOS partitions, so they have to be set up right.

Stuck at 10MHz...

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