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Sharp PC-4600 won't boot from bootdisk.

Nicki53

New Member
Joined
Jul 17, 2013
Messages
4
Location
Aalborg, Denmark
Hi.

I have an ancient Sharp PC-4600 (4602 to be precise!) which i have recently found a power supply for.

I have a problem though, i don't have any original 720kb DOS 3.3 Sharp Bootdisk (it does not have a harddrive) but i found an image and put it on a 1.44mb High Density floppy, and i tried to boot from the floppy but i get the message "Not a System Diskette".

I have no idea what to do... Is the image bad, or is it the floppy disk or even the Sharp's floppy drive?
Any help would be appreciated!
 

modem7

Veteran Member
Joined
May 29, 2006
Messages
7,785
Location
Melbourne, Australia
I see on the Internet that the PC-4600 has two 720K diskette drives.

but i found an image and put it on a 1.44mb High Density floppy, and i tried to boot from the floppy but i get the message "Not a System Diskette".
Try the 'STEP 2' block of the process at http://www.minuszerodegrees.net/5170/setup/5170_gsetup_720.htm
In STEP 2 is a link to a 720K sized image of a DOS boot diskette, and you'll be creating a 'fake' 720K diskette from a 1.44M one.
 

Nicki53

New Member
Joined
Jul 17, 2013
Messages
4
Location
Aalborg, Denmark
I see on the Internet that the PC-4600 has two 720K diskette drives.


Try the 'STEP 2' block of the process at http://www.minuszerodegrees.net/5170/setup/5170_gsetup_720.htm
In STEP 2 is a link to a 720K sized image of a DOS boot diskette, and you'll be creating a 'fake' 720K diskette from a 1.44M one.

It sadly dosen't work, the Sharp still says " Not a System Diskette, should i buy some 720kb floppy's off Amazon or what?
 

modem7

Veteran Member
Joined
May 29, 2006
Messages
7,785
Location
Melbourne, Australia
It sadly dosen't work, the Sharp still says " Not a System Diskette, should i buy some 720kb floppy's off Amazon or what?
Usually the 'fake' 720K diskette technique is good enough for booting purposes, but maybe the drive in your PC-4600 is intolerant of that. So, some 'real' 720K diskettes would prove/disprove that.

Another thing to try is the use of a 3.5" head cleaning diskette.
 
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