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Showing posts from September, 2026

Percentage Used Is a Vendor Estimate: Total Bytes Written Ends the SSD Warranty

A 1 TB NVMe drive in a video editing box comes up on a Monday morning with three numbers on screen, and no two of them tell the same story. The monitoring utility reports Percentage Used: 63 , which a person reads as thirty-seven percent of the drive's life still in hand. A second utility reports 600 GB written, which reads as a drive that has hardly been touched. The drive's own log page reports Data Units Written: 1,171,875,000 , which is not in any unit a person recognises at all. The warranty leaflet in the box says five years or 600 TB, whichever comes first. The drive was bought two and a half years ago. Exactly one of those numbers is the one the warranty document is written against, and it is not the health percentage. What follows tracks that single counter from the NVMe field definition to the sentence in the warranty that decides the outcome. The same counter prints as 600 GB in one tool, 545.7 in another and 600 TB in a third, and the gap between the first and th...

A Dash Cam Asking for Class 10 Needs the C10 Mark, Not U3

The Manual Asks for Class 10 and the Card Answers With U3 A dash camera that quietly stops recording, or that raises a memory card alert a few weeks after a fresh card went into the slot, sends its owner to the card label. The label is crowded. A current microSDXC card prints a capacity, a bus mark, a circled 10, a U with a 3 inside it, and a V30. The manual is not crowded at all. Garmin, DriveCam 76 Owner’s Manual: Installing the Dash Camera Memory Card puts the whole requirement in one sentence: “The camera requires a microSD® memory card from 8 to 512 GB with a speed rating of Class 10 or higher.” One sentence, two readings. Read as arithmetic, the digits on a V30 mark run past the manual’s 10, so a card marked U3 and V30 looks like a card that clears the bar with room to spare. Read the way the standards body that defines those marks intends, the phrase names a symbol, and a symbol belongs to a family. The number 10 turns up three separate times in th...

Wireless-to-Wireless Ports Fall Outside the One-Business-Day Porting Rule

A number transfer is one of the few consumer requests with a federal deadline attached, and that deadline gets quoted back at people constantly. Someone in Los Angeles moves a 617 number to a new wireless carrier, submitting the request at 11:40 on a Tuesday morning, Pacific time. Wednesday afternoon the old handset still rings, the app shows the transfer as pending, and a support agent says federal rules require a port to finish in one business day. That reply mixes together two things the rule keeps apart. The one-business-day figure is real, and it is written into the Office of the Federal Register's current text of 47 CFR 52.35, Porting intervals . But the sentence carrying the figure names the transfer types it governs, and a handset-to-handset move between two wireless carriers is not among them. Where the figure does apply, the business day it describes begins on a clock tied to the telephone number rather than to the person holding the phone. Same figure, two readings, an...

Ten Years of Chromebook Updates Start at the Platform Release, Not Your Purchase

The Same Ten Years, Measured From Two Different Days A Chromebook bought new eighteen months ago announces that it will stop getting software updates. The owner remembers the headline, and it is real: Google's The Keyword post "Chromebooks will get 10 years of automatic updates" says "All Chromebook platforms will get regular automatic updates for 10 years — more than any other operating system commits to today." Eighteen months is not ten years. The sentence does not say what the ten years are counted from, and it reads two ways. Reading one: ten years counted from the day the device was bought, or at worst from the day the model went on sale. Reading two: ten years counted from the first release of the platform inside the device, a date that can sit years before the model reached a shelf and that no sticker on the box mentions. Reading two is the rule. And a second fork inside it, marked by one asterisk in a table, decides whether the last stretch of thos...