TiVo Community Forums Archives - Adding Drive B smaller than Drive A

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Adding Drive B smaller than Drive A
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Posted by: spencerpayne

The warranty on my 60 hr Series2 TiVo has finally run up so I am cracking the box and hoping to upgrade. I have a 40 GB HD that I am no longer using and wanted to drop that in. Surprisingly, I have had plenty of room for recording thusfar and do not want to spend more money on another drive.

The Hinsdale How-to is amazingly thorough, but here's my problem/question. I can't test the backup because the new drive for DriveB is only 40 GB and the Drive A that I have is obviously 60. Do I need to format the 40 GB for drive B somehow, or does issuing the mfsadd command take care of everything I need? Does this make sense?

Posted by: Robert S

Yes, 100Gb is a good size for a TiVo.

Be very careful when you make the backup. In particular, don't forget the -f<space>9999 bit and check that the 60Gb drive detects as 60-ish Gb or your backup won't contain the backgrounds.

Restoring the backup to the B drive is simply to verify the integrity of the backup. mfsadd will expand your image on to a blank drive, or a drive that contains existing data just fine.