kdale@vaihingen-emh.arpa (Keith Dale) (01/12/86)
Can anyone tell me offhand what the cluster size is for 10MB hard drives formatted with IBM's PC-DOS 2.1? It's either 2k or 4k, but I can't remember which. Thanks! Keith M. Dale <kdale@vaihingen-emh.arpa>
corwin@cdp.UUCP (01/15/86)
On my IBM PC which has a 10 MB hard disk with a controller made by DTC,
the block size is 4 kb.
Corwin Nichols, MicroTech Exports, 415-324-9114
cdp!corwin@SU-Glacier.ARPA
ihnp4!hplabs!glacier!cdp!corwin
{decwrl,sun,bellcore}!glacier!cdp!corwinnather@utastro.UUCP (Ed Nather) (01/16/86)
In article <1519@brl-tgr.ARPA>, kdale@vaihingen-emh.arpa (Keith Dale) writes: > Can anyone tell me offhand what the cluster size is for 10MB hard drives > formatted with IBM's PC-DOS 2.1? It's either 2k or 4k, but I can't remember > which. Thanks! > > Keith M. Dale It's 4K on a 10MB disk and 8K (!) on a 20MB disk. So if you have a bunch of little files ( <4K ) on a 10MB disk and move to a 20MB for more room, you will be seriously disappointed. On a 20MB disk, a 1 byte file wastes 8191 bytes of storage! This is called progress ... -- Ed Nather Astronomy Dept, U of Texas @ Austin {allegra,ihnp4}!{noao,ut-sally}!utastro!nather nather@astro.UTEXAS.EDU
farren@well.UUCP (Mike Farren) (01/19/86)
In article <277@utastro.UUCP>, nather@utastro.UUCP (Ed Nather) writes: > In article <1519@brl-tgr.ARPA>, kdale@vaihingen-emh.arpa (Keith Dale) writes: > > Can anyone tell me offhand what the cluster size is for 10MB hard drives > > formatted with IBM's PC-DOS 2.1? It's either 2k or 4k, but I can't remember > > which. Thanks! > > It's 4K on a 10MB disk and 8K (!) on a 20MB disk. So if you have a bunch of > little files ( <4K ) on a 10MB disk and move to a 20MB for more room, you > will be seriously disappointed. On a 20MB disk, a 1 byte file wastes 8191 > bytes of storage! > Yet another good reason to go to DOS 3.1, which gives you 2K clusters on a 20MB disk (16-bit FAT entries instead of 12-bit). -- Mike Farren uucp: {your favorite backbone site}!hplabs!well!farren Fido: Sci-Fido, Fidonode 125/84, (415)655-0667