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AmigaWorld Official AmigaDOS 2 Companion DRIVE/A is the device name of the floppy drive that contains the disk you want to make bootable. To make a floppy disk in the internal drive bootable, you enter:
INSTALL DFO:
The NOBOOT/S argument reverses the action of the Install command; it overwrites the boot block of a bootable disk and makes it nonbootable. The CHECK/S argument does not write anything to the disk. Instead, it ex amines the disk to determine if it has a valid boot block. Some virus programs modify a disk's boot block, and some commercial programs do the same as part of their copy-protection schemes. When CHECK/S reveals a nonstandard boot block, you have to decide whether the cause is a virus or a copy-protec tion scheme. The best way to detect a virus is to use VirusX, a public-domain
program written by Steve Tibbets. You can obtain a copy of VirusX from an Amiga users' group, a company that distributes public-domain programs (they advertise in the Amiga magazines), an electronic bulletin-board system (BBS), or an on-line information service such as PeopleLink, CompuServe, GEnie, or BIX. Install is very useful in combating viruses because it destroys boot-block viruses.
The FFS/S argument lets you install the boot block of the FastFileSystem in stead of the default, which is the old file system (OFS).
DiskDoctor: Repairing Damaged Volumes When you insert a disk into a drive, AmigaDOS attempts to validate the disk. If the disk validator finds errors, it reports that the disk is unreadable. (A com mon cause is ejecting a disk from the drive while the drive's disk-activity light is on.) To recover as many files from the damaged disk as possible, you use the DiskDoctor command, which has the template: DRIVE/A
Unlike some commercial and public-domain disk recovery utilities, DiskDoctor writes to the damaged disk. Because of this, you may want to try another utility such as the public-domain DiskSalv before using DiskDoctor. DiskSalv does not change the damaged disk, but tries to copy as much infor mation off it as possible. You can run DiskDoctor after you've run DiskSalv, but DiskSalv is useless if you've already run DiskDoctor on a disk.
When you run DiskDoctor, it prompts you to put the damaged disk in the drive. It then reads every cylinder on the disk, trying to recover all the files. When it recovers a file, it prints the filename. It also prints the location of any