Messages in this thread | | | Date | Tue, 16 Mar 1999 17:32:11 -0800 | From | Max Cohan <> | Subject | Re: FAT32: Invalid FSINFO signature on mount? |
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I've had the same problem. I've asked the maintainer (there IS one listed in the MAINTAINERS file) and he doesn't have the time to fix it right now. Also, I have not been able to find any information on this type of partition. Not Microsoft, not PowerQuest (the people that make partition magic), not half a dozen other people who'd think would know a lot about FAT32.
What I need to do is to look at the drive structure and see what the differences are between a standard partition and one of these partions with a different signature. BTW, I submitted a patch that at least gave a more intelligent error and set the system in read only mode when it saw these problems.
Let me know a little bit about the size of your partition/drive, etc. I believe this to be an issue on _partitions_ larger than 8gigs. But, I have only my system and a few random reports to go on. The more information I have the more likely I'll be able to figure out the problem. I may need you to do a dump of portions of your disk once I figure out what information I need. That way I'll be able to 'verify' any changes. You should be able to READ from the drive, but not write to it.
Thanks, Max mcohan@adnc.net
On Tue, Mar 16, 1999 at 11:06:23PM +0000, nev99@cwcom.net wrote: > > I am trying to get some help I am having using my hard disk under linux, and I think > it is in a part of the system that you maintain. The problem is mounting my FAT32 > hard disk under linux. This disk is also my Windows 95 boot disk. The error I get > is: > > fat_read_super: Did not find valid FSINFO signature, found 0x534f4453 offset = 0x1e0 > > > The result is a mounted volume that can be read ok but appears full (which it isn't) > files are created empty sometimes, and df reports the space used equal to space existing. > > > I discovered it using the ZipSlack distribution which runs on a UMSDOS directory > on my Windows 95 C: boot disk. > > I have repeated the problem using a the tomsrtbt floppy distribution of linux and > mounting the volume as an msdos partition by typing as root: > > mount -t msdos /dev/hda1 /mnt > > Both use systems use kernel 2.0.36 > > I have looked in the newsgroups, and found that a number of other people have the > same problem, but there are no answers to be found! > > I have tried to understand the source in Kernel 2.2, I have found where the error > message is generated linux/fs/fat/misc.c but there is no maintainer listed for this > code or for the msdos file system code. > > However, knowing that amagic number on my hard drive is different from what someone > thought it should be in 1993 hasn't helped much here! I have also checked the disk > with Windows Scandisk which reported no errors. > > Please can someone mail me with the correct maintainer to ask this question to directly, > if you cannot assist me in resolving it. > > Many thanks for your assistance. > > Neville. > nev99@cwcom.net > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.rutgers.edu > Please read the FAQ at http://www.tux.org/lkml/
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