Dennis' computer has a Western Digital Passport external hard drive that mounts, but it can't be read it or ejected. Then it crashes the computer. Leo says that it's a USB device that isn't fully mounting. It's probably an issue with either the USB controller on his computer, or the cable itself. Dennis should try using a different USB cable first. Then he should try plugging it into another USB port and see if he can replicate the issue. The USB driver may also be corrupted.
Irwin's hard drive died, so he replaced it with a 3TB drive. But his computer can't see all of it. He's running Windows 10. Leo says it may be a hardware limitation of his computer that's preventing it from seeing all the hard drive. Leo advises waiting until Tuesday with the Windows 10 Creator's Update. It could fix the problem. He'll also want to be using UEFI to boot to it. If not, there are third party partition managers that can fix it.
Bob wants to buy a Synology NAS and discovered that it doesn't come with hard drives. Leo says that's correct. That way he can put in the right hard drive for his needs. If he's going to stream a lot of video, he'll want a faster hard drive. It isn't a cheap NAS.
Jeff wants to do some spring cleaning by getting rid of some old computers, but is concerned about privacy and the data on the hard drives. Leo says that the easiest thing to do is to simply remove the hard drives. He could also use something like Darik's Boot and Nuke (DBAN) to completely wipe the drive. It erases everything by writing zeros across the drive, and then erases it again. If he does that several times, he'll be safe from everyone save the NSA. Solid State Drives, however, can be easier to get data off of.
Eva has a MacBook and it's running out of storage and she doesn't know why. Leo says to get the program Disc Inventory X. it will show what's using space in color coded sectors and whether she can safely delete it.
Dave wants to know if his old RAID hard drives can be read by his computer. Leo says it depends. If mirrored, maybe. They're identical. But maybe not. He shouldn't make any assumptions. Dave should copy the data off it and then he can take each of them and put them in their own enclosed drives, or use a new array like Synology. Synology also does a disk check periodically to keep it healthy. When he puts them in, they'll check the hard drives as they are building the raid.
Victor has an external drive which shows up as a drive, but Windows doesn't read it. Leo says to right click on the start button and select "Disk Management." It may be that the drive isn't formatted or partitioned properly.
Dave has a laptop with two hard drives with various ages. When is it a good time to replace the old drive? Leo says that hard drives fail over time. Google says that they will fail a lot at first, and then then to zero the first few years, and then about 8% a year after that. So if you're drive has been running that long, it may be one of the well put together ones. Hard drives are cheap so just keep your data backed up. Use it until it fails and when it does, your data's already backed up and ready for the new hard drive. Spinning drives also tend to fail gradually.
Tom says it takes over a day for his computer to boot up. Leo says it sounds like the startup process in the hard drive is damaged. If he can take the hard drive out and put it into a new computer, like Tom did, then perhaps it's a cable or power supply issue. Tom should try booting from the USB key and see if it takes the same amount of time. If that works, then clearly there's a driver or software issue causing it to boot up slowly.
Roger is having issues with his SSD. It's slowing down and takes a long time to access his data. Leo says the drive is only a year old and the computer a few years old, but there can be a drive failure, even in new SSDs. It's time to replace it. He could try running an OS from a USB key and see what happens. If he doesn't have a similar issue, that clearly shows the hard drive has a problem.