Back up all your Microsoft Windows Server – on-premises, in remote locations, in private and hybrid clouds. Your entire Windows Server will be backed up in one easy step with patented, block-level disk imaging. We achieve RTOs (recovery time objectives) as low as 15 seconds.
COURSE of the MONTH
7 days, 21 hours left to enrollBecome a Premium Member and unlock a new, free course in leading technologies each month.
Solved
Invalid Drive
Posted on 1998-09-14
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.
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.
[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
-
2
-
2
- +1
6 Comments
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.
Some older machines simply cannot understand certain types of drives. Check for REMAP and LBA settings.
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.
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.
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.
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.
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.
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.
Featured Post
We value your feedback.
Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!
Question has a verified solution.
If you are experiencing a similar issue, please ask a related question
This is about my first experience with programming Arduino.
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.
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…
In this video, Percona Solutions Engineer Barrett Chambers discusses some of the basic syntax differences between MySQL and MongoDB.
To learn more check out our webinar on MongoDB administration for MySQL DBA: https://www.percona.com/resources/we…
Suggested Courses
Course of the Month7 days, 21 hours left to enroll
765 members asked questions and received personalized solutions in the past 7 days.
Join the community of 500,000 technology professionals and ask your questions.