jay@umd5.UUCP (05/03/85)
Due to pressure applied by hardware, I found it necessary to back up all my files from my AT fixed to to 1.2 megabyte diskettes. The process went smoothly until I tried to restore the nine diskettes. RESTORE told me that my diskettes were out of sequence and refused to let me continue. After a little bit of exploration on (what I originally thought was the only) offending disk, I found that BACKUP had marked the size of the file as zero and likewise the starting cluster. I marked them (using Norton) and tried again. The RESTORE program stopped when it finished processing the disk I had marked. Apparently, not only had BACKUP mismarked the size and starting cluster, it also marked the diskette as the last last one in the chain. This same thing happened on three of the nine diskettes. Has anybody out there experienced anything remotely similar when backing up an AT hard disk on to floppies? -- Jay Elvove ..!seismo!rlgvax!cvl!umd5!jay
dan@petrus.UUCP (05/07/85)
> Due to pressure applied by hardware, I found it necessary to back up all my > files from my AT fixed to to 1.2 megabyte diskettes. The process went > smoothly until I tried to restore the nine diskettes. RESTORE told me that > my diskettes were out of sequence and refused to let me continue. After a > little bit of exploration on (what I originally thought was the only) > offending disk, I found that BACKUP had marked the size of the file as zero > and likewise the starting cluster. I marked them (using Norton) and tried > again. The RESTORE program stopped when it finished processing the disk > I had marked. Apparently, not only had BACKUP mismarked the size and > starting cluster, it also marked the diskette as the last last one in > the chain. This same thing happened on three of the nine diskettes. > Has anybody out there experienced anything remotely similar > when backing up an AT hard disk on to floppies? > -- > Jay Elvove ..!seismo!rlgvax!cvl!umd5!jay I once had a similar problem restoring a PC/AT 3.0 file structure from 1.2MB diskettes. I eventually found some combination of backup commands and responses to error messages that allowed me to restore each diskette individually even though it was "out of sequence". The files that spanned backup diskettes were not restored correctly (but I recovered them from previous backups). I suspect many (possibly even most) multiple diskette PC DOS 3.0 backups are bad. I was extraordinarily irritated by this because one suffers trailing edge technology in return for the feeling of security associated with established business equipment manufacturers. How could this happen? Doesn't IBM spend zillions of dollars on quality assurance?
skip@gatech.CSNET (Skip Addison) (05/13/85)
> > Due to pressure applied by hardware, I found it necessary to back up all my > files from my AT fixed to to 1.2 megabyte diskettes. The process went > smoothly until I tried to restore the nine diskettes. RESTORE told me that > my diskettes were out of sequence and refused to let me continue. After a > ... > the chain. This same thing happened on three of the nine diskettes. > Has anybody out there experienced anything remotely similar > when backing up an AT hard disk on to floppies? > -- > Jay Elvove ..!seismo!rlgvax!cvl!umd5!jay > > There is a severe bug in the DOS 3.0 BACKUP command. It doesn't work. I'm using a preliminary version of DOS 3.1 which doesn't have that problem. IBM is now shipping 3.1. -- "Here I stand, for I can do no other." -- Martin Luther The Office of Telecommunication and Networking Georgia Tech, Atlanta GA 30332 Southern Bell, AT&T, MCI, etc: (404) 894-6866 CSNet: Skip @ GATech ARPA: Skip.GATech @ CSNet-Relay.ARPA uucp: ...!{akgua,allegra,amd,hplabs,ihnp4,seismo,ut-ngp}!gatech!skip