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-
- (C) Yan Seiner 1988
- May not be used in any commercial product without express written permission of
- the author. May be copied, and distributed freely with this doc file.
-
- bse drive_letter
-
- is a simple boot sector editor. It is designed to complement Norton's Advanced
- Utilites, which for some unfathomable reason, does not provide one.
-
- WARNING!!!!!
-
- bse can trash your disks with ease. DOS takes the boot sector very seriously.
- Changing things randomly can lose you all your data, as well as damage your
- hardware. MAKE BACKUPS before using it on your hard disks. Learn how to use it
- on floppies. Get a good book on DOS (Ray Duncan's Advanced DOS comes to mind.)
- IN NO CASE WILL I BE RESPONSIBLE FOR WHAT HAPPENS WHEN YOU USE BSE!!!! MAKE
- BACKUPS!!! KNOW WHAT'S GOING TO HAPPEN WHEN YOU CHANGE THE BOOT SECTOR BEFORE
- YOU MAKE ANY CHANGES!!!!
-
- Changing cluster size
-
- Why should I do that? Because DOS is very stupid. It formats small hard disks
- with large clusters. What this means is that EVERY file on a 10 Meg HD takes at
- least 4K. Many of my files are small (under 1K) and changing cluster size to 1K
- increased my useful storage by over 30%.
-
- What is a cluster?
-
- A cluster is a group of sectors. A sector is 512 bytes long. DOS stores files
- in clusters. Thus, a HD with 8 sector clusters will require 4K per file, no
- matter how small. Fortunately, a cluster can consist of almost any number of
- sectors. It is best for a cluster to consist of powers of two multiples of
- sectors. A 10 Meg HD is formatted with 8 sector clusters by default. You can
- change this to 4, 2, or even 1. There are drawbacks to using a small cluster,
- but if you have a lot of RAM and not enough disk space, you can gain a lot.
- Using small clusters tends to leave less room for programs in RAM. This should
- not be a concern unless you have only 256K RAM.
-
- How to change cluster size
-
- 1. Cold boot DOS.
- 2. MAKE BACKUPS. One as a minmum, two preferrably.
- 3. Make a bootable floppy, with bse and format on it.
- 4. Run bse, specifying drive letter.
- 4a. Change sectors per cluster
- 4b. Hit F9 to calculate FAT size (should be around 40 sectors)
- 4c. Hit F10 to exit, writing changes to sector.
- 5. Cold boot DOS to read new boot sector (it is read once, at boot time.)
- Disk is now unreadable.
- 6. Format disk.
- 7. Restore from backups.
-
- Good Luck!
-
- Yan Seiner 1988
- 223-C King St.
- Princeton, NJ 08540
-