Messages in this thread Patch in this message | | | Date | Mon, 25 Jan 1999 23:26:48 +0100 (MET) | From | (Guest section DW) | Subject | The Linux 64 GiB Limit - was: Re: oops! Should be fdisk broken? |
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> From: David Hamm <dhamm@itserve.com> > > I have an 84g raid unit I'm trying to fdisk. When the computer boots I get > the following info on the drive. > SCSI device sdb: hdwr sector= 512 bytes. Sectors= 164659200 [80400 MB] [80.4 GB] > When I fdisk it I get different info and after partitioning and mke2fs the > dirve only mounts with 14g of space. I know this is a geometry issue but why > is it an issue? Can fdisk be fixed? > > Not if you do not provide any detail at all.
From dhamm@itserve.com Mon Jan 25 16:48:31 1999 From: David Hamm <dhamm@itserve.com>
Disk /dev/sdb: 64 heads, 32 sectors, 14864 cylinders
Aha! Very good. You lost precisely 2^27 sectors, that is 64 GiB, or, more relevant, 2^16 cylinders.
No surprise, since cylinders is a short.
So, the following should improve things. (Unverified, untested.)
Andries
--- hdreg.h~ Fri Jan 22 16:49:34 1999 +++ hdreg.h Mon Jan 25 23:13:06 1999 @@ -114,7 +114,7 @@ struct hd_geometry { unsigned char heads; unsigned char sectors; - unsigned short cylinders; + unsigned long cylinders; unsigned long start; };
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