Solved

Invalid Drive

Posted on 1998-09-14
6
314 Views
Last Modified: 2011-09-20
I formatted a partitioned drive on a 486/66 and now the machine will not boot or acknowledge Drive C, although it responds to the floppy drives  a & b.  

I have a boot disk, but fdisk will not recognize a Drive C either, listing it an an "Invalid Drive Speifiation."

The hardware mechanisms are in good order.  By what means can I "restore" or get fdisk to acknowledge Drive C? Its an old bios and I just don't see a way to reroute the boot sequence. Thank you.  RH.
0
Comment
Question by:ronaldito
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 12

Expert Comment

by:mark2150
ID: 1125116
Check your BIOS settings and make sure the drive shows up there. If the BIOS supports autodetect, use it. Once this is complete then FDISK should be able to find the drive. If the BIOS isn't sensing the drive I'd start checking cables and jumpers. Be sure to note the drive geometry and the drive type number for future reference.

Some older machines simply cannot understand certain types of drives. Check for REMAP and LBA settings.
0
 
LVL 32

Accepted Solution

by:
jhance earned 200 total points
ID: 1125117
How are you specifying drive C to FDISK?  When y ou run FDISK, you don't specify a drive letter.  It comes up and you either create a partition, delete a partition, or if you have more than one drive, you get option 5 to change hard drives.

When you boot from the DOS floppy, you run FDISK and then create a valid PRIMARY partition on the drive.  Then you set the partition as "active".  Then you exit FDISK and must reboot the system   with the boot floppy. Now you run FORMAT to actually format the partition you just created.  If you use the command:

FORMAT C: /S

you will get a bootable copy of DOS on the disk.  Otherwise, after FORMAT, you can use the command:

SYS C:

to put a copy of DOS on the drive.  Now the system should boot from the hard drive.
0
 

Expert Comment

by:Mimic34
ID: 1125118
Someone else has this exact problem but you guys arn't understanding.  You cannot state "format c:" if there is no "c:".  That is the grand problem.  There has to be some way to assign a letter to the drive.  FDISK recognizes that there is a drive # 0 that is say, 4 gigabytes in size.  but when booting, it says that there is only a floppy drive that you booted from.  Please help cause my friend has this problem also.  Any info would be greatly appreciated.
0
Online Training Solution

Drastically shorten your training time with WalkMe's advanced online training solution that Guides your trainees to action. Forget about retraining and skyrocket knowledge retention rates.

 
LVL 3

Expert Comment

by:gward28
ID: 1125119
when I was still useing a 486dx2 I had a Problem just like this
many bios at this time did not read hard drives larger than 540mb
Im not sure but some read up to 840mb .that in it self is not stated above but just in case it is it my bois on usertype 47
with info on the drive stated it saw it all 1.6gig but when I
booted back up it didn't see it at all I thougt it crapped out
on me the hard drive was bad .I took it to the Guru's they went
over it and they were stumpped .At last after reading every thing
Icould find at the time I found upgrade bios that solved my
prob.this sounds to fimiliar.
0
 

Expert Comment

by:Mimic34
ID: 1125120
well plz tell us how to fix this problem.  My friend is about to take this to a guy who is going to hook up the computer with his and try to look on it.  I dont think that is necissary, but i dont know what to do to help him.
0
 
LVL 3

Expert Comment

by:gward28
ID: 1125121
what type of HD is it?
0

Featured Post

The Eight Noble Truths of Backup and Recovery

How can IT departments tackle the challenges of a Big Data world? This white paper provides a roadmap to success and helps companies ensure that all their data is safe and secure, no matter if it resides on-premise with physical or virtual machines or in the cloud.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

In the modern office, employees tend to move around the workplace a lot more freely. Conferences, collaborative groups, flexible seating and working from home require a new level of mobility. Technology has not only changed the behavior and the expe…
This paper addresses the security of Sennheiser DECT Contact Center and Office (CC&O) headsets. It describes the DECT security chain comprised of “Pairing”, “Per Call Authentication” and “Encryption”, which are all part of the standard DECT protocol.
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
Do you want to know how to make a graph with Microsoft Access? First, create a query with the data for the chart. Then make a blank form and add a chart control. This video also shows how to change what data is displayed on the graph as well as form…

707 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question