Date: Sat, 23 Aug 1997 01:28:25 +1000 From: Bruce Evans <bde@zeta.org.au> To: freebsd-scsi@FreeBSD.ORG, j@uriah.heep.sax.de Cc: andrew@zeta.org.au Subject: Re: newfs on Fujitsu R640 (2k sector media) Message-ID: <199708221528.BAA30318@godzilla.zeta.org.au>
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>> Won't this be foiled when newfs attempts to write the last sector, to
>> verify that it can, and uses a 512-byte write?
It should write in multiples of the fs block size or maybe the fragment
size. If not, (ab)using the buffered device might work.
>Newfs doesn't write to a last sector to verify something. That's not
>a PC BIOS... Newfs just creates the required filesystem structures
>only.
Nope, UTSL, newfs/mkfs.c has full support for PC BIOSes ;-):
/*
* Validate the given file system size.
* Verify that its last block can actually be accessed.
*/
if (fssize <= 0)
printf("preposterous size %d\n", fssize), exit(13);
wtfs(fssize - (realsectorsize / DEV_BSIZE), realsectorsize,
(char *)&sblock);
Bruce
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