24 Apr
2010
24 Apr
'10
9:19 p.m.
On Sat, Apr 24, 2010 at 9:16 AM, Andrew Sealy-Bell
<andyamsterdam2003(a)gmail.com> wrote:
Hi, doesn't anybody know if there is a disk size
limit on Unix 6? I wrote a
C program to create a file and it won't go above around 1.5Mb. It doesn't
crash or report any errors but the file size never exceeds around that size.
Maybe it's a disk size limitation?
According to my memory, reinforced by reading the manual section File
System (V), there are several limits.
The disk size (in 512-byte blocks) is kept in the super-block as a
16-bit integer. This implies at most a 32MB file system. Since at
that time there was only one file system per disk, that means a
maximum 32MB disk.
The file size (in bytes) is kept in an i-node as a 24-bit number,
implying a maximum 16MB file.
carl
--
carl lowenstein marine physical lab u.c. san diego
clowenstein(a)ucsd.edu