MediaWiki:Sitenotice:
2025-12-29: I have restored the wiki to a backup from the end of November. Starting in September 2025, accesses went form the 800MB-1.2GB range per month to 26GB in September, 42GB in October, and 70GB in November with most accesses originating from China. As soon as I realized what was causing all the access problems in November, I shut it down (it had reached 36GB by then) behind a password/login screen. The database had gotten corrupted, and I tried a restore from just before the spike in access but that didn't work. Thus, end of November. I still have the other daily backups so if there were any important additions in December, let me know and maybe they can be recovered. - Allen H.
BACKUP
BACKUP
BACKUP is an utility to duplicate disks.
Syntax: Backup [<options>] [<sourcedevice>] [<destinationdevice>] [#<n>K]
Options :
e = exit if read error occurs f = backup from .dsk file s = single disk backup -v = do not verify writes -? = display help n memory in KB assigned to the BACKUP command
If <destinationdevice> is omitted, a single disk backup is executed.
If both devices are omitted, /d0 and /d1 are used.
Assigning more memory to the command speeds up the procedure, mostly when used with a single drive.
BACKUP performs a sector by sector copy, ignoring file structures. In all cases, the devices specified must have the same format (size, density, and so forth) and the destination disk must not have defective sectors.
A typical backup session
/DD:backup /d0 /d1
Ready to backup from /d0 to /d1 ?: y
disk label
is being scratched
OK ?:y
Sectors copied: $05A0
Verify pass
Sectors verified: $05A0